346 L. R. CKAWSHAY. 



tioned by either of these authors, occurs, I believe, in every preparation 

 of the species I have seen, including some specimens collected by the 

 Huodey in the North Sea. 



AMPHICTENIDAE. 

 Pectinaria (Petta) pusilla, Malmgren. 



One specimen at each of the Positions 33 and 34. Length (in spirit), 

 13 and 15 mm. respectively. The second example was associated 

 with an Ascidian inside a valve of Pecten opcrcularis. 



Depth, 42 fath. 



The specimens only differ from Malmgren's description (94) in the 

 point of the membranous fold under the paleolae. This is triangular, as in 

 P. assimilis, Mcintosh (90). The shape of this, however, is not clearly 

 defined by Malmgren, who figures it slightly emarginate in the dorsal 

 view, and overhanging in the ventro-lateral view of the whole animal. 

 It is conceivable that in the single specimen he had before him the 

 natural outline of the process was indistinct. In all other respects the 

 examples are in close conformity with Malmgren's account of the 

 species. Since the occurrence of Malmgren's specimen, which was 

 obtained by Loven off the coast of Bohus in the Skager Eak, the 

 species seems only to have been recorded from the Tirth of Clyde 

 (cp. Gemmill, 82). 



SABELLIDAE. 

 Sabella pavonina (Savigny). 



Usually small specimens at Positions 1, 7, 8, 31, 34, 35, 37, 40, 53, 



59, 80. 

 Depth, 40-51 fath. 



Dasychone bombyx (Dalyell). 



At Positions 1 (several), 3 (one), 55 (a few), 59 (one), 60 (one), 70 



(three), 72 (one), vii (one). 

 Depth, 40-49 fath. or over. 



SEEPULIDAE. 

 Serpula vermicularis, Linnaeus. 



At Positions 7 (a few), 8 (several), 9 (very common), 13 (two), 14 (a 

 few), 32, 43 (one), 49 (several large), 59 (one), 60 (two), 72 (one). 

 Depth, 42-49 fath. 



Commonly attached to stones and shells of Pecten. The records are 

 probably incomplete. 



