Polychaeta 25 B 



Ampharete eupalea, n. sp. 



Type specimen. Cat. No. 31, Victoria Memorial Museum, Ottawa. 

 One specimen. 



The branchiae are large and equal. They form a continuous straight line 

 across the dorsum, the two mesal ones in contact, leaving no indication of an 

 hiatus between the two groups. 



The paleae on each side are arranged in a strongly curved series forming 

 about two-thirds of the circumference of a circle. In the type they number 

 twenty-two or twenty-three in each series. The paleae at the mesal end of the 

 series on the dorsal side of the curve are much reduced in size. Each palea is 

 acutely pointed distally, the tip not truly mucronate, though with a slight 

 tendency toward that condition. The tip is curved gently toward the centre 

 of the circle limited by the series. (See PL V, fig. 6.) 



The thoracic notopodial setae narrowly limbate and finely tipped as usual. 

 The uncini of the type are obviously larger than those of the two preceding 

 species. There are five teeth in each series, plate slightly indented at the end, 

 the corners rounded. (See PL V, fig. 7.) 



The type is incomplete, embracing only the anterior region of the thorax 

 ten setigerous somites being present. The diameter is 3 mm. 



LOCALITY. North of Alaska. Station 23. (Latitude 70 24' N., longitude, 

 16125 / W.) August 19, 1913. Depth, 9-10 fathoms. Bottom, mud with 

 pebbles, no alga?. One specimen. 



AMPHIGTENIDAE. 

 Cistenides granulata (Linne"). 



1767. Sabella granulata LINNE, Syst. Nat., ed. 12, I, p. 1268. 

 1780. Amphitrite auricoma FABRICIUS, Fauna Groenlandica, p. 289. 

 1843. Amphitrite escrichti RATHKE, Nova Acta Acad. Leop.-Car., 20, p. 219. 

 1851. Pectinaria groenlandica GRUBE, Fam. AnneL, p. 82, 138. 



A species of circumpolar distribution. 



LOCALITIES. Northwest Territories: Bernard harbour, outer part. Station 

 41. July 20, 1915. Depth, about 10 meters. Bottom, sandy mud with Lam- 

 inaria. Two specimens with tubes. 



Northwest Territories : Bernard harbour, outer part. Station 4 Ic. July 28, 

 1915. Depth, 3-8 fathoms. Bottom, mud with algae. 



Northwest Territories: Bernard harbour. Station 49. June 27, 1916. A 

 broken tube from the stomach of a Pacific eider, Somateria v-nigra Gray. 



Northwest Territories: Dolphin and Union strait, west of Cockburn point. 

 Station 43c. September 14, 1915. Depth, 20-30 meters. Bottom, gray mud 

 with stones, Laminaria, Lithothamnion, etc. Many of the characteristic tubes, 

 all empty. 



Hudson bay: Cape Fullerton, "shore of island." Neptune Expedition, 

 September 25-29, 1903. Several tubes with animals in situ and preserved dry. 



Alaska: Port Clarence. Station 20gr. August 4, 1913. Depth, 2-3 fathoms. 

 Bottom, sandy mud with algae. A number of specimens in their tubes. 



Alaska: Grantley harbour. Station 20 b, c. July 30, 1913. Bottom, sandy 

 mud with algae. A number of tubes with little doubt pertaining to this species. 

 They are darker and rather more opaque than usual. 



CAPITELLIDAE. 

 Capitella capitata (Fabricius). 



1780. Lumbricus capitatus FABRICIUS, Fauna Groenlandica, p. 279. 



1827. Lumbricus litoralis JOHNSTON, Zool. Journ., 3, p. 328. 



1828. Capitella Fabricii BLAINVILLE, Diet. Sci. Nat., 57, p. 443. 



