As can be seen from the description by Leidy (see image) here he was correctly recombining Aphrodita armadillo Bosc ... [details]

Below tide mark. [details]

Leidy (1855) "Body cylindrical, narrowed posteriorly; no lateral pinnae; segments numerous; those anteriorly ... [details]

Original diagnosis by Leidy (1855: 146): "Body cylindrical, narrowed at the extremities. Tentaculae numerous, ... [details]

Atlantic coast of the USA: Rhode Island (Point Judith, entrance of Narragansett Bay). [details]

The species name originates from an apparent misidentification by Leidy (1855). Quatrefages (1866: 278) ... [details]

Not stated, uncertain. Maybe from the Latin verb torqueo, meaning 'to twist', 'to whirl', or 'to distort', related ... [details]

Not expressly stated. The specific epithet eximia is a Latin adjective meaning 'special', 'particular' or ... [details]

From mud and sand, below tide mark. [details]

"46. SIPHONOSTOMUM AFFINE, Leidy. Body cylindro-fusiform, minutely papillated, with four rows of fasciculi of setae; ... [details]

Leidy used the incorrect subsequent spelling of Grube for what is Siphonostoma Otto [details]

Leidy (1855: 148) applied the name Sigalion mathildae Audouin & Milne Edwards to a specimen from Beesley's Point, ... [details]

Point Judith, entrance of Narragansett Bay, Rhode Island, Atlantic Ocean (gazetteer estimate 41.36°, -71.48°). ... [details]

from Beesley's Point, New Jersey, USA Atlantic coast [details]

Point Judith, entrance of Narragansett Bay, Rhode Island, Atlantic Ocean (gazetteer estimate 41.36°, -71.48°). [details]