Aclis pseudopareora Powell, 1940 (original description)
Aoteatilia larochei Powell, 1940 (original description)
Austronoba obliquata Powell, 1940 accepted as Subonoba obliquata (Powell, 1940) (original description)
Austrosassia parkinsoniana [sic] accepted as Austrosassia parkinsonia (Perry, 1811) (basis of record)
Balcis maoria Powell, 1940 accepted as Melanella maoria (Powell, 1940) (original description)
Balcis pervegrandis Powell, 1940 accepted as Hypermastus bulbulus (Murdoch & Suter, 1906) (original description)
Brookula contigua Powell, 1940 (original description)
Brookula lincta Powell, 1940 accepted as Brookula prognata Finlay, 1926 (original description)
Buccinulum (Euthrena) mariae Powell, 1940 accepted as Buccinulum mariae Powell, 1940 (original description)
Buccinulum (Evarnula) multilineum aupouria Powell, 1940 accepted as Buccinulum linea (Martyn, 1784) (original description)
Chileutomia neozelanica Powell, 1940 (original description)
Cirsonella variecostata Powell, 1940 (original description)
Cominella (Cominula) youngi Powell, 1940 accepted as Cominella necopinata (Finlay, 1930) (original description)
Conjectura carinata Powell, 1940 accepted as Acremodontina carinata (Powell, 1940) (original description)
Dardanula roseola (Iredale, 1915) accepted as Eatoniella roseola (Iredale, 1915) (basis of record)
Eulima mangonuica Powell, 1940 accepted as Fusceulima mangonuica (Powell, 1940) (original description)
Gazameda maoria Powell, 1940 accepted as Stiracolpus pagoda (Reeve, 1849) (original description)
Ividella maoria Powell, 1940 (original description)
Linemera pinguoides Powell, 1940 accepted as Alvania pinguoides (Powell, 1940) (original description)
Liratilia gracilis Powell, 1940 accepted as Liratilia conquisita gracilis Powell, 1940 (original description)
Lironoba anomala Powell, 1940 (original description)
Lissotesta bicarinata Powell, 1940 (original description)
Lissotesta consobrina Powell, 1940 accepted as Lissotestella consobrina (Powell, 1940) (original description)
Lissotesta decipiens Powell, 1940 (original description)
Lissotesta oblata Powell, 1940 (original description)
Lodderia iota Powell, 1940 (original description)
Lodderia waitemata Powell, 1940 (original description)
Macrozafra enwrighti Powell, 1940 (original description)
Macrozafra mariae Powell, 1940 (original description)
Maoricolpus finlayi Powell, 1940 (original description)
Maoricrypta youngi Powell, 1940 (original description)
Mendax duplicarinata Powell, 1940 accepted as Metaxia duplicarinata (Powell, 1940) (original description)
Micantapex angustatus Powell, 1940 accepted as Kuroshioturris angustata (Powell, 1940) (original description)
Micantapex finlayi Powell, 1940 accepted as Bathytoma murdochi Finlay, 1930 (original description)
Munditia anomala Powell, 1940 (original description)
Munditia delicatula Powell, 1940 (original description)
Mysella larochei Powell, 1940 (original description)
Naricava (Tropidorbis) neozelanica Powell, 1940 accepted as Naricava neozelanica Powell, 1940 (original description)
Neolepton sanguineum (Hutton, 1883) accepted as Neolepton antipodum (Filhol, 1880) (basis of record)
Neothais scalaris (Menke, 1829) accepted as Dicathais orbita (Gmelin, 1791) (basis of record)
Nepotilla nitidula Powell, 1940 (original description)
Nepotilla vera Powell, 1940 (original description)
Nobolira affinis Powell, 1940 accepted as Attenuata affinis (Powell, 1940) (original description)
Nobolira contigua Powell, 1940 accepted as Attenuata contigua (Powell, 1940) (original description)
Nobolira regis Powell, 1940 accepted as Attenuata regis (Powell, 1940) (original description)
Notosetia crassilabrum Powell, 1940 accepted as Powellisetia crassilabrum (Powell, 1940) (original description)
Notosetia infecta (Suter, 1908) accepted as Pusillina (Haurakia) infecta (Suter, 1908) accepted as Haurakia infecta (Suter, 1908) (basis of record)
Notosetia multilirata Powell, 1940 accepted as Powellisetia subtenuis (Powell, 1937) (original description)
Notosetia subcarinata Powell, 1940 accepted as Powellisetia subtenuis (Powell, 1937) (original description)
Opimilda maoria Powell, 1940 accepted as Mathilda maoria (Powell, 1940) (original description)
Orbitestella vera Powell, 1940 accepted as Orbitestella parva (Finlay, 1924) (original description)
Pervicacia mariae Powell, 1940 accepted as Euterebra tristis (Deshayes, 1859) accepted as Duplicaria tristis (Deshayes, 1859) (original description)
Promerelina lacunosa Powell, 1940 accepted as Merelina lacunosa (Powell, 1940) (original description)
Scalaronoba secunda Powell, 1940 (original description)
Siliquaria maoria Powell, 1940 accepted as Tenagodus maoria (Powell, 1940) (original description)
Splendrillia larochei Powell, 1940 (original description)
Striatestea eulima Powell, 1940 (original description)
Subonoba aupouria Powell, 1940 (original description)
Taron mouatae Powell, 1940 (original description)
Tenagodus maoria (Powell, 1940) (original description)
Venustilifer secundus Powell, 1940 accepted as Pelseneeria secunda (Powell, 1940) (original description)
Vermicularia maoriana Powell, 1937 (additional source)
Zeadmete aupouria Powell, 1940 (original description)
Zeadmete finlayi Powell, 1940 (original description)
Zelaxitas alta Powell, 1940 accepted as Laevilitorina (Rissolittorina) alta (Powell, 1940) represented as Laevilitorina alta (Powell, 1940) (original description)
Zemitrella attenuata Powell, 1940 (original description)
Zemitrella fallax Powell, 1940 (original description)
Zemitrella laevirostris Powell, 1940 (original description)
Zemitrella regis Powell, 1940 (original description)
Zeradina (Radinista) scalarina Powell, 1940 accepted as Radinista scalarina (Powell, 1940) (original description)
Zerotula ammonitoides Powell, 1940 accepted as Omalogyra ammonitoides (Powell, 1940) (original description)
Zerotula nummaria Powell, 1940 (original description)
Zerotula ramosa Powell, 1940 accepted as Palazzia ramosa (Powell, 1940) (original description)

 Taxonomic remark

 for Rissoina fuscozona Suter, 1908

Referred to Potamopyrgus Stimpson, 1865 (Tateidae)by Powell, 1940 [details]