WoRMS source details

Clark AH, Clark AM (1967) A monograph of the existing crinoids 1(5). Bulletin of the United States National Museum (82):1-860.
133557
Clark, A.; Clark, A.
1967
A monograph of the existing crinoids 1(5
Bulletin of the United States National Museum
82-1
Publication
RIS (EndNote, Reference Manager, ProCite, RefWorks)
BibTex (BibDesk, LaTeX)
Date
action
by
2013-01-12 18:30:12Z
created
db_admin

Adelometra AH Clark, 1907 (additional source)
Adelometra angustiradia (Carpenter, 1888) (basis of record)
Adelometra tenuipes AH Clark, 1908 accepted as Caryometra tenuipes (AH Clark, 1908) (basis of record)
Alecto eschrichtii Müller, 1841 accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Alecto europaea Leach, 1815 accepted as Antedon bifida bifida (Pennant, 1777) (basis of record)
Alecto glacialis Owen, 1833 ex Leach MS accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Alecto milleri Müller, 1841 accepted as Antedon bifida bifida (Pennant, 1777) (basis of record)
Alecto petasus Düben & Koren, 1846 accepted as Antedon petasus (Düben & Koren, 1846) (basis of record)
Alecto phalangium Müller, 1841 accepted as Leptometra phalangium (Müller, 1841) (basis of record)
Alecto sarsii Düben & Koren, 1846 accepted as Hathrometra tenella (Retzius, 1783) (basis of record)
Alectro Say, 1825 accepted as Alecto Leach, 1815 (basis of record)
Alectro dentata Say, 1825 accepted as Hathrometra tenella (Retzius, 1783) (basis of record)
Andrometra AH Clark, 1917 (additional source)
Andrometra indica (AH Clark, 1909) (basis of record)
Andrometra psyche (AH Clark, 1908) (basis of record)
Anisometra John, 1939 (additional source)
Anisometra frigida John, 1939 (basis of record)
Annametra AH Clark, 1936 (additional source)
Annametra minuta AH Clark, 1907 (basis of record)
Annametra occidentalis (AH Clark, 1915) (basis of record)
Antedon de Fréminville, 1811 (additional source)
Antedon abyssicola Carpenter, 1888 accepted as Bathymetra abyssicola (Carpenter, 1888) (basis of record)
Antedon abyssorum Carpenter, 1888 accepted as Thaumatometra abyssorum (Carpenter, 1888) (basis of record)
Antedon adrestine AH Clark, 1907 accepted as Iridometra adrestine (AH Clark, 1907) (basis of record)
Antedon adriani Bell, 1908 accepted as Anthometrina adriani (Bell, 1908) (basis of record)
Antedon adriatica AH Clark, 1911 accepted as Antedon mediterranea (Lamarck, 1816) (basis of record)
Antedon alternata Carpenter, 1888 accepted as Thaumatometra alternata (Carpenter, 1888) (basis of record)
Antedon angustipinna Carpenter, 1888 accepted as Isometra angustipinna (Carpenter, 1888) (basis of record)
Antedon angustiradia Carpenter, 1888 accepted as Adelometra angustiradia (Carpenter, 1888) (basis of record)
Antedon antarctica Carpenter, 1881 accepted as Solanometra antarctica (Carpenter, 1881) (basis of record)
Antedon arcana Hartlaub, 1912 accepted as Caryometra tenuipes (AH Clark, 1908) (basis of record)
Antedon asperrima AH Clark, 1907 accepted as Florometra asperrima (AH Clark, 1907) (basis of record)
Antedon balanoides Carpenter, 1888 accepted as Balanometra balanoides (Carpenter, 1888) (basis of record)
Antedon barentsi Carpenter, 1886 accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Antedon bifida (Pennant, 1777) (basis of record)
Antedon bifida bifida (Pennant, 1777) (basis of record)
Antedon bifida moroccana (AH Clark, 1914) (basis of record)
Antedon bigradata Hartlaub, 1895 accepted as Psathyrometra bigradata (Hartlaub, 1895) (basis of record)
Antedon bowersi AH Clark, 1907 accepted as Nanometra bowersi (AH Clark, 1907) (basis of record)
Antedon brachymera AH Clark, 1907 accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Antedon celtica Sladen (in Duncan & Sladen, 1877) accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Antedon celtica (M'Andrew & Barrett, 1857) accepted as Leptometra celtica (M'Andrew & Barrett, 1857) (basis of record)
Antedon challengeri AH Clark, 1907 accepted as Isometra challengeri (AH Clark, 1907) (basis of record)
Antedon clio AH Clark, 1907 accepted as Boleometra clio (AH Clark, 1907) (basis of record)
Antedon columnaris Carpenter, 1881 accepted as Zenometra columnaris (Carpenter, 1881) (additional source)
Antedon cristata Hartlaub, 1912 accepted as Comatonia cristata (Hartlaub, 1912) (basis of record)
Antedon cubensis Pourtalès, 1869 accepted as Trichometra cubensis (Pourtalès, 1869) (basis of record)
Antedon dentata (Say, 1825) accepted as Hathrometra tenella (Retzius, 1783) (basis of record)
Antedon duebenii Böhlsche, 1866 (basis of record)
Antedon erythrizon AH Clark, 1907 accepted as Psathyrometra fragilis (AH Clark, 1907) (additional source)
Antedon eschrichtii (Müller, 1841) accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Antedon eschrichtii magellanica Bell, 1882 accepted as Florometra magellanica (Bell, 1882) (basis of record)
Antedon exigua Carpenter, 1888 accepted as Phrixometra exigua (Carpenter, 1888) (basis of record)
Antedon fragilis AH Clark, 1907 accepted as Psathyrometra fragilis (AH Clark, 1907) (basis of record)
Antedon gorgonia de Fréminville, 1811 accepted as Antedon bifida bifida (Pennant, 1777) (basis of record)
Antedon hageni (Pourtalès, 1868) accepted as Coccometra hagenii (Pourtalès, 1868) (basis of record)
Antedon hagenii (Pourtalès, 1868) accepted as Coccometra hagenii (Pourtalès, 1868) (basis of record)
Antedon hirsuta Carpenter, 1888 accepted as Eumorphometra hirsuta (Carpenter, 1888) (basis of record)
Antedon hondoensis AH Clark, 1907 accepted as Florometra mariae (AH Clark, 1907) (basis of record)
Antedon hupferi Hartlaub, 1890 (basis of record)
Antedon hystrix Carpenter, 1884 accepted as Poliometra prolixa (Sladen, 1881) (basis of record)
Antedon incommoda Bell, 1888 (basis of record)
Antedon incommoda austini AM Clark (in AH Clark & AM Clark, 1967) (original description)
Antedon incommoda incommmoda Bell, 1888 (basis of record)
Antedon inexpectata AH Clark, 1907 accepted as Florometra asperrima (AH Clark, 1907) (basis of record)
Antedon iris (AH Clark, 1912) (basis of record)
Antedon isis AH Clark, 1907 accepted as Thaumatometra isis (AH Clark, 1907) (basis of record)
Antedon laodice AH Clark, 1907 accepted as Florometra mariae (AH Clark, 1907) (basis of record)
Antedon lineata (AH Clark, 1907) accepted as Isometra challengeri (AH Clark, 1907) (basis of record)
Antedon longicirra (AH Clark, 1912) non Carpenter, 1888 (basis of record)
Antedon longipinna Carpenter, 1888 accepted as Phrixometra longipinna (Carpenter, 1888) (basis of record)
Antedon loveni Bell, 1882 (not Bell, 1884) (basis of record)
Antedon magellanica (Bell, 1882) accepted as Florometra magellanica (Bell, 1882) (basis of record)
Antedon mariae AH Clark, 1907 accepted as Florometra mariae (AH Clark, 1907) (basis of record)
Antedon maroccana (AH Clark, 1914) accepted as Antedon bifida moroccana (AH Clark, 1914) (basis of record)
Antedon mediterranea (Lamarck, 1816) (basis of record)
Antedon milleri (Müller, 1841) accepted as Antedon bifida bifida (Pennant, 1777) (basis of record)
Antedon minckerti AH Clark, 1907 accepted as Nanometra bowersi (AH Clark, 1907) (basis of record)
Antedon minor AH Clark, 1907 accepted as Nanometra bowersi (AH Clark, 1907) (basis of record)
Antedon minuta AH Clark, 1907 accepted as Annametra minuta AH Clark, 1907 (basis of record)
Antedon moluccana AH Clark, 1912 accepted as Euantedon moluccana (AH Clark, 1912) (basis of record)
Antedon moroccana AH Clark, 1914 accepted as Antedon bifida moroccana (AH Clark, 1914) (basis of record)
Antedon nana Hartlaub, 1890 accepted as Dorometra nana (Hartlaub, 1890) (basis of record)
Antedon nuttingi (AH Clark, 1936) (basis of record)
Antedon orientalis AH Clark, 1907 accepted as Nanometra bowersi (AH Clark, 1907) (basis of record)
Antedon parvicirra Carpenter, 1888 accepted as Dorometra parvicirra (Carpenter, 1888) (basis of record)
Antedon parviflora (AH Clark, 1912) (basis of record)
Antedon parvula Hartlaub, 1895 accepted as Fariometra parvula (Hartlaub, 1895) (basis of record)
Antedon phalangium (Müller, 1841) accepted as Leptometra phalangium (Müller, 1841) (basis of record)
Antedon prolixa Sladen, 1881 (in Duncan & Sladen, 1881) accepted as Poliometra prolixa (Sladen, 1881) (basis of record)
Antedon psyche AH Clark, 1908 accepted as Andrometra psyche (AH Clark, 1908) (basis of record)
Antedon pusilla Carpenter, 1888 accepted as Perometra pusilla (Carpenter, 1888) (basis of record)
Antedon quadrata Carpenter, 1884 accepted as Heliometra glacialis (Owen, 1833 ex Leach MS) (basis of record)
Antedon rathbuni AH Clark, 1907 accepted as Florometra asperrima (AH Clark, 1907) (basis of record)
Antedon remota Carpenter, 1888 accepted as Tonrometra remota (Carpenter, 1888) (basis of record)
Antedon rhomboidea Carpenter, 1888 accepted as Florometra magellanica (Bell, 1882) (basis of record)
Antedon rhomboidea Hartlaub, 1895 (not Carpenter, 1888) accepted as Florometra tanneri (Hartlaub, 1895) (basis of record)
Antedon rosaceus (Fleming, 1828) accepted as Antedon bifida bifida (Pennant, 1777) (basis of record)
Antedon sarsi (Düben & Koren, 1846) accepted as Hathrometra tenella (Retzius, 1783) (basis of record)
Antedon sarsii (Düben & Koren, 1846) accepted as Hathrometra tenella (Retzius, 1783) (basis of record)
Holotype IMC, identified as Thaumatocrinus investigatoris AH Clark (in AH Clark & AM Clark, 1967)
Holotype NRS (Antarctic sta. 58), identified as Isometra vivipara Mortensen, 1917
Holotype BMNH (Challenger sta. 219), identified as Thysanometra tenuicirra (Carpenter, 1888)
Holotype BMNH (Challenger sta. 320), identified as Isometra angustipinna (Carpenter, 1888)
Holotype BMNH (Challenger sta. 320), identified as Isometra challengeri (AH Clark, 1907)
Syntype BMNH (Discovery Investigations sta. 170), identified as Isometra hordea John, 1938
Syntype BMNH (Discovery Investigations sta. 190,1652,1872), identified as Isometra graminea John, 1938
Holotype USNM 22607, identified as Thysanometra tenelloides (AH Clark, 1907)
Holotype USNM 22652, identified as Decametrocrinus borealis AH Clark, 1907
Holotype USNM 22674, identified as Coccometra nigrolineata AH Clark, 1918
Holotype USNM 22675, identified as Coccometra guttata AH Clark, 1918
Holotype USNM 22682, identified as Decametrocrinus rugosus AH Clark, 1908
Holotype BMNH BANZARE sta. 40, identified as Isometra johanni AM Clark (in Clark AH & Clark AM), 1967
Holotype UMZC MCZ 7, identified as Coccometra hagenii (Pourtalès, 1868)
 Diagnosis

Andrometra with centrodorsal low hemispherical to almost columnar; cirri not more than 35. Second pinnule with ... [details]

 Diagnosis

Andrometra with centrodorsal conical, as high as broad at the base; cirri 50. Second and third pinnules with 15 ... [details]

 Diagnosis

Annametra with P1 and P2 with ~18 segments. Arms ~30 mm and cirri ~5 mm long. [details]

 Diagnosis

Annametra with P1 and P2 of up to 35 very short segments. Arms ~50 mm long in adult. Longest cirri up to 15 mm long. [details]

 Diagnosis

Antedon bifida with P2 similar to and same length as P3 but with no gonad. P1 about twice as long as following two ... [details]

 Diagnosis

Antedon bifida with distal cirrals strongly compressed laterally, up to twice as wide in lateral view as proximal ... [details]

 Diagnosis

Antedon incommoda with centrodorsal discoidal, with aboral pole quite flat although variable in width and with ... [details]

 Diagnosis

Antedon incommoda with a relatively smaller aboral pole (0.4-0.9 mm across) with center sometimes very slightly ... [details]

 Diagnosis

Antedon with arms up to 70 mm long. Centrodorsal flattened hemispherical. Cirri in largest specimens about ... [details]

 Diagnosis

Antedon with centrodorsal hemispherical, more or less flattened, with fairly large convex polar area. Cirri 15-30, ... [details]

 Diagnosis

Antedon with 18-30 (usually 20-23) cirrals; all but first 2-3 are longer than wide and centrally constricted; distal ... [details]

 Diagnosis

Antedon with P2 intermediate in length between P1 and P3, and resembling P1. Cirri usually 40, of at most 18 ... [details]

 Diagnosis

Antedon with P2 stouter basally and two-thirds the length of P1, which has 18-20 segments. Cirri ~30, of up to 11 ... [details]

 Diagnosis

Antedon with centrodorsal flattened hemispherical. Cirri ~30, in three crowded marginal rows, of 10-12 cirrals; ... [details]

 Diagnosis

Antedon with arms to ~50 mm long. Cirri to 40, of 16-18 cirrals; length to ~25% arm length; longer proximal cirrals ... [details]

 Diagnosis

Antedon with cirri ~30, of 10-12 cirrals, short (about a fifth the arm length), rather stout, strongly recurved ... [details]

 Diagnosis

Antedon with not more than 35 cirri, of not over 17 (rarely more than 15) cirrals; distal cirrals strongly ... [details]

 Diagnosis

Argyrometra with first three pinnules successively longer. Cirri of 12-17 cirrals. Holotype with arms ~30 mm long. [details]

 Diagnosis

Argyrometra with first three pinnules successively longer; pinnulars with rather prominently everted and spinous ... [details]

 Diagnosis

Athrypsometra with centrodorsal almost as tall as basal diameter in large specimens but relatively lower in small ... [details]

 Diagnosis

Athrypsometra with centrodorsal 1.9 mm across base and 1.6 mm tall, with 4-5 cirrus sockets in each radial area in ... [details]

 Diagnosis

Athrypsometra with low conical centrodorsal 1.7 mm across base and 1.0 mm tall. Radial areas each with 2 columns of ... [details]

 Diagnosis

Athrypsometra with centrodorsal sharply conical, ~1.8 times wider across base than tall; sockets in 2 (apical) to 4 ... [details]

 Diagnosis

Atopocrinus with cirrus sockets in 10 columns, two per radial area. [details]

 Diagnosis

Bathymetra with centrodorsal having flattened aboral pole with cirrus sockets alternating irregularly around the ... [details]

 Diagnosis

Bathymetra with 10-15 cirri around aboral pole, directed aborally; none around centrodorsal base. Radials form ... [details]

 Diagnosis

Caryometra with centrodorsal sharply conical, up to 1.5 times taller than wide at the base. Cirri in 15 columns ... [details]

 Diagnosis

Caryometra with centrodorsal about as tall as wide; aboral apex papillose. Cirri in 15 columns, long, very slender, ... [details]

 Diagnosis

Caryometra with centrodorsal about 1.25 times taller than wide. Cirri in 15 crowded columns, slender, of moderate ... [details]

 Diagnosis

Caryometra with centrodorsal slightly taller than wide. Cirri in 15 columns, long, slender, of 27-34 cirrals; ... [details]

 Diagnosis

Caryometra with centrodorsal rounded conical, about as tall as wide. Cirri in 10 columns, short, strongly curved ... [details]

 Diagnosis

Caryometra with centrodorsal low conical, wider than tall. Cirri in 10 columns, long, very slender, scarcely curved ... [details]

 Diagnosis

Cyclometra with cirri ~40 when arms are 130 mm long, arranged in three columns of 2-3 cirri in each radius; longest ... [details]

 Diagnosis

Cyclometra with cirri ~80 when arms are just over 100 mm long, arranged in 3 columns of 4-5 each per radial area; ... [details]

 Diagnosis

Dorometra with P1 and P2 similar, with usually 8-10 segments, only half as long as P3, which has 13-16 segments. ... [details]

 Diagnosis

Dorometra with third to fifth cirrals longest, with L/W ratio ~3. P1 10 mm long with 13 segments; P2 3.5 mm long, ... [details]

 Diagnosis

Dorometra with P2 (12 pinnulars) intermediate in size and number of pinnulars between P1 (8 pinnulars) and P3 ... [details]

 Diagnosis

Dorometra with P2 intermediate in length between P1 and P3; first three pinnules with 8-9 segments. Cirri ... [details]

 Diagnosis

Dorometra with P2 slightly smaller than P1, which is about half as long as P3, which has 18-20 segments. Cirrals ... [details]

 Diagnosis

Dorometra with P3 much less than twice as long as P1 and P2, which is slightly shorter than P1. Cirri 7-11 mm long, ... [details]

 Diagnosis

Eometra with centrodorsal as tall as wide at the base, which is 2.5 mm. in the type specimen. Cirri ~20, of 26-31 ... [details]

 Diagnosis

Eometra with centrodorsal basal diameter 1.33 times height. Cirri 22-27, ~18 mm long, probably of ~18 cirrals; ... [details]

 Diagnosis

Euantedon with ~40 cirri with up to 25 cirrals; longest with L/W ratio 2.5-3. Arms ~100 mm long. [details]

 Diagnosis

Euantedon with 25 cirri of 17-26 (usually about 20) cirrals; longest cirrals with L/W ratio ~2. Arms ~40 mm long in ... [details]

 Diagnosis

Euantedon with 15-17 cirrals; longest cirrals with L/W ratio ~4 (median width); distal cirrals decreasing in length ... [details]

 Diagnosis

Euantedon with 40-50 cirri, 10-12 mm long, with up to 15 cirrals; longest cirrals with L/W ratio up to 6 (median ... [details]

 Diagnosis

Euantedon with 15-17 cirrals; longest cirrals with L/W ratio 2.0-2.5; distal cirrals only very slightly shorter; ... [details]

 Diagnosis

Euantedon with 30 cirri, 8-10 mm long, of 13-14 cirrals; longest cirrals with L/W ratio of ~2. P1 11-15 mm long, ... [details]

 Diagnosis

Eumorphometra having cirri ~45, of 34-40 cirrals, up to 12 mm long in 15 columns, when arms are 35-40 mm long. [details]

 Diagnosis

Eumorphometra with ~40 cirri (in distinct columns interradially), of 25-30 cirrals, when arms are ~35 mm long. ... [details]

 Diagnosis

Eumorphometra with ~30 cirri of up to 25 cirrals, 7 mm long when arms are ~30 mm long. Brachitaxis margins spinous; ... [details]

 Diagnosis

Eumorphometra with ~40 cirri irregularly arranged, of 23-28 cirrals, when arm length is 25 mm. First primibrachial ... [details]

 Diagnosis

Eumorphometra with ~40 cirri of up to 28 cirrals when arms are ~30 mm long. Brachitaxes with distinctly spinous ... [details]

 Diagnosis

Fariometra similar to F. alcyon but with centrodorsal an equilateral triangle in lateral view, and longest cirrals ... [details]

 Diagnosis

Fariometra with cirri of 19-21 cirrals; longest with L/W ratio 2-3 (median width). Primibrachial ossicles and first ... [details]

 Diagnosis

Fariometra with centrodorsal conical, 2.6 mm across base and 2.2 mm tall (holotype). Cirri 45-100, with up to 21 ... [details]

 Diagnosis

Fariometra with lateral margins of first primibrachial converging; lateral angles of axils extending beyond angles ... [details]

 Diagnosis

Fariometra with second brachials shield-shaped and much longer than broad. Pinnules and cirri unknown. [details]

 Diagnosis

Fariometra with centrodorsal conical, almost as high as wide at the base. Cirri ~60, of 21-36 cirrals; longest ... [details]

 Diagnosis

Fariometra with primibrachial ossicles and first two brachials in close lateral contact throughout and sharply and ... [details]

 Diagnosis

Fariometra with arms 30 mm long. Cirri ~40, of 20-22 cirrals; longest cirrals with L/W ratio ~3 (median width) with ... [details]

 Diagnosis

Fariometra with centrodorsal large, conical, twice as broad at the base as tall. Cirri ~55, with ~26 cirrals; ... [details]

 Diagnosis

Florometra similar to F. serratissima but with third syzygy at brachials 14+15 (occasionally 12+13 to 16+17). [details]

 Diagnosis

Florometra with basal segments of oral pinnules markedly broadened but not carinate. P1 usually of ~60 segments ... [details]

 Diagnosis

Florometra with centrodorsal conical; bare aboral pole very small. Cirri ~100, of up to 38 cirrals; no aboral ... [details]

 Diagnosis

Florometra with 40-77 cirri, of up to 34 cirrals; longest cirrals with L/W ratio up to 3; distal cirrals usually ... [details]

 Diagnosis

Florometra with basal pinnulars enlarged and carinate. P1 and P2 similar in length and number of segments, their ... [details]

 Diagnosis

Florometra with third syzygy usually between brachials 16+17 (sometimes 15+16). Basal pinnulars of oral pinnules ... [details]

 Diagnosis

Florometra with brachials following the third syzygy about as long as broad instead of markedly broader than long. ... [details]

 Diagnosis

Florometra with oral pinnules slender, lacking carinate processes on basal pinnulars of proximal pinnules. Middle ... [details]

 Diagnosis

Iridometra with first three exterior (and usually first two interior) pinnules similar, elongate, longer than their ... [details]

 Diagnosis

Leptometra differing from L. phlangium in having cirri proportionately shorter and not tapered distally, so that ... [details]

 Diagnosis

Leptometra with centrodorsal sharply to bluntly, rounded, or truncated conical, or even somewhat columnar, usually ... [details]

 Diagnosis

Mastigometra with 50-80 cirri 12-14 mm long, of ~15 cirrals; distal cirrals with L/W ratio 1.3-1.5. P1 25 mm long ... [details]

 Diagnosis

Mastigometra with 50-90 cirri ~10 mm long, of ~16 cirrals; sixth and following cirrals with L/W ratio ~1. P1 15 mm ... [details]

 Diagnosis

Mastigometra with ~35 cirri 12-14 mm long, of 12-16 cirrals; distal cirrals with L/W ratio 1.3-1.5. P1 15 mm long ... [details]

 Diagnosis

Nanometra with centrodorsal broadly truncated with wide, more or less flat, aboral pole; cirri ~LXX when arms are ... [details]

 Diagnosis

Nanometra with centrodorsal conical with small aboral pole; cirri XXX-L, 30-45 (usually 35-40) segments, when arms ... [details]

 Diagnosis

P. longipinna with cirri ~30, of 20-25 cirrals. Proximal pinnules all long;, P1 reaching to about brachial 12, with ... [details]

 Diagnosis

Perometra closely resembling P. diomedeae but with all pinnules present, 13-15+ arms 50-60 mm long, less strongly ... [details]

 Diagnosis

Perometra with 10 arms only, to 90 mm long; Pa usually absent; synarthrial tubercles extravagantly developed; 35-55 ... [details]

 Diagnosis

Perometra with 10 arms (in the unique holotype) ~30 mm long; cirri XVII, up to 6 mm long with 28 segments (about a ... [details]

 Diagnosis

Perometra with cirri to 20 mm long when arm length is 60 mm, rather stout basally, with 39-47 segments; longer ... [details]

 Diagnosis

Phrixometra with cirri of up to 20 cirrals, wider distally; longest cirrals in peripheral cirri with L/W ratio ~3. ... [details]

 Diagnosis

Phrixometra with cirri ~30, of 14-17 cirrals. P1 with 11-12 segments, 3 mm long; P2 with 13 to 14 segments, 4 mm ... [details]

 Diagnosis

Phrixometra with cirri ~45, with <20 cirrals. P1 of ~14 segments; P2 usually first genital pinnule, similar in length and number ... [details]

 Diagnosis

Thaumatometra with 15-18 subequal, much elongated cirrals; antepenultimate cirral with L/W ratio ~3 (proximal ... [details]

 Diagnosis

Thaumatometra with cirri 4 mm long, of only 12-15 cirrals, all of which are much elongated; antepenultimate L/W ratio ... [details]

 Diagnosis

Thaumatometra with cirri ~30, of ~10 cirrals, ~6 mm long (when arms are 15 mm long); longest cirral with L/W ratio ... [details]

 Diagnosis

Thaumatometra with cirri 40-60, the longest of 13-16 segments, to ~9 mm long; longest cirrals with L/W ratio 3-6 ... [details]

 Diagnosis

Thaumatometra with cirri ~30, 7-8 mm long, of 12-16+ cirrals; longest cirrals with L/W ratio ~4 (median width); ... [details]

 Diagnosis

Thaumatometra with cirri 30-40, of 9-15 cirrals; longest cirrals with L/W ratio 3-4 (median width) with arms ~30 mm ... [details]

 Diagnosis

Thaumatometra with cirri 30-40, of ~20 cirrals; longest with L/W ratio slightly 2; distal cirrals only slightly ... [details]

 Diagnosis

Thaumatometra with centrodorsal flattened, almost discoidal; cirri 40-45, of 13-17 segments; longest with L/W ratio ... [details]

 Diagnosis

Thaumatometra with centrodorsal flattened, almost discoidal; cirri 55-60, none retained. P1 of ~13 segments. Arms ... [details]

 Diagnosis

Tonrometra with cirri ~30, of 18-20 cirrals; the longer segments not longer than their maximum diameter. P1 with ... [details]

 Diagnosis

Tonrometra with cirri 40-50, of 25-33 cirrals; longest cirrals with L/W ratio 1.5. P1 with 13-16 segments, and ... [details]

 Diagnosis

Tonrometra with cirri 30-40, of 19-29 cirrals; longer cirrals with L/W ratio ~2. P1 of ~20 segments, with distal ... [details]

 Diagnosis

Tonrometra with cirri of up to 37 cirrals; longest cirrals with L/W ratio 2.5; elongated distal segments of oral ... [details]

 Diagnosis

Toxometra with cirri of 13-16 cirrals; longest cirrals with L/W ratio ~2. Fourth pinnule from two-thirds as long as ... [details]