Polychaeta 15 B 



ONUPHIDIDAE. 

 Onuphis conchylega Sars. 



1835. Onuphis conchylega SARS, Beskr. og laktt., p. 61, pi. 10, f. 28a-28e. 

 1843. Onuphis Eschrichtii OERSTED, Groenl. Annul. Dorsibr., p. 20, pi. 3, f. 



33-41, 45. 



1851. Diopatra Eschrichtii GRUBE, Fam. AnneL, p. 43. 

 1865. Northia conchylega JOHNSTON, Cat. Worms Brit. Mus., p. 138. 

 1882. Onuphis hyperborea HANSEN, Nyt Mag. f. Natur. 24, p. 268. 



LOCALITY. Northwest Territories: Dolphin and Union strait, off Stapylton 

 bay. Station 436. September 14, 1915. Depth, 50-60 meters. Bottom, gray 

 mud with pebbles; no algae. 



The anterior end, consisting of forty-two segments, of a single specimen 

 was taken in situ in its tube. It is 40 mm. long with a width, exclusive of 

 parapodia, of 3-6 mm. The anterior segments are crossed by reddish-brown 

 stripes above, a stripe across the anterior border of each segment. The tube is 

 composed of flattened pebbled, fragments of shells and grains of sand in the 

 typical manner. 



This species is well-known from Norway, Finmark, Nova Zembla, Iceland, 

 Greenland, Davis strait, Bering sea, the eastern coast of North America south 

 to Florida and on the European south to Great Britain. In the more southern 

 localities mentioned it is usually taken at depths of 40 fathoms and below. 



LUMBRINEREIDAE. 



Lumbrinereis fragilis (0. F. M tiller). 



1776. Lumbricus fragilis O. F. MULLER, Zool. Danica Prodr., p. 216. 



1825. Nereis fragilis BLAINVILLE, Diet. Sci. Nat., 34, p. 454. 



1828. Scoletoma fragilis BLAINVILLE, ibid., 57, p. 492. 



1833. Lumbrinereis fragilis AUDOUIN and MILNE EDWARDS, Ann. Sci. Nat., 28, 



p. 244. 



1851. Lumbriconereis fragilis GRUBE, Fam. AnneL, p. 45. 

 1864, Lumbriconereis borealis Kinberg, Ofvers. af K. Vet.-Akad. Forh., no. 10, 



p. 568. 



One specimen referred to this species is among the material from Hudson 

 bay. The individual is 180 mm. long, including a regenerated caudal region 

 about 15 mm. long and consisting of about forty-five segments. The prostomium 

 appears proportionately rather broader across base than usual. Maxillae II 

 with five teeth. This form is abundant in northern waters, as about Greenland, 

 Nova Zembla, Spitzbergen, Siberia, and Bering strait, and extends southward 

 in the Atlantic along both the North American and the European shores. 



LOCALITY. Hudson bay, East side, in Richmond Gulf. June, 1899. 15-25 

 fathoms. A. P. Low, collector. 



Lumbrinereis sp. 



A single specimen only 7 mm. long of uncertain species. 



LOCALITY: Arctic Canada: Dolphin and Union strait, off Cockburn point. 

 Station 43a. September 13, 1915. Depth, 100 meters. Bottom, gray mud and 

 pebbles. No algse. 



