Trichobranchus glacialis Malmgren, 1866

Siddique, Alfisa, Purushothaman, Jasmine, Bhowal, Aishee & Mandal, Sumit, 2021, Distribution and diversity of Polychaeta (Phylum: Annelida) in the Northern coastal waters of Bay of Bengal, Records of the Zoological Survey of India 121 (4), pp. 453-463 : 458

17. Trichobranchus glacialis Malmgren, 1866

1866. Trichobranchus glacialis Malmgren, Öfversigt af Königlich Vetenskapsakademiens förhandlingar, Stockholm., 22 (5): 395–396, pl. XXIV, fig. 65.

Diagnosis: The body has an average size of 30 mm for 70 segments. The thorax is columnar with a narrow abdomen. Thorax possess 15 setigers. Upper lip forms a pair of lobes and the lower lip is folded obliquely. A single, mid dorsal branchia along with 3 pairs of branchiae present. Tentacles of two types- long, thread like and stout thick type. Branchiae with four branches nearly fused with common origin on a thick stem. Spines of first thoracic neuropodium (setiger 6) bent with straight (not recurved) tips. Pygidium is even or may have slight dents ( Malmgren, 1866).

Distribution: India - West coast of India from Cape Comorin to Dwarka ( Joydas & Damodaran, 2009).World- Gulf of St. Lawrence ( Brunel et al., 1998), European waters ( Costello et al., 2001), Red Sea, Arabian Sea ( Wehe & Fiege, 2002), Gulf of Mexico ( Fauchald et al., 2009).

Infraclass SCOLECIDA Rouse & Fauchald, 1997 Family CAPITELLIDAE Grube, 1862

Genus Capitella Blainville, 1828