POLYCHAETE WORMS, PART 1 



111 



hooked tips. Anal end rounded, with pair of short ventral anal cirri 

 (fig. 30c). Proboscis short, cylindrical, with few scattered papillae. 

 Color, preserved: irregularly splotched with dark pigment dorsally, 

 with rust-colored glandular areas at bases of dorsal hooked setae 

 and below ventral cirri. 



Biology. — Dredged on bottoms of mud, silty clay, sandy mud, 

 and with shell and gravel. 



Material examined. — North Atlantic (Delaivare Station, 42°31' 

 N., 67°4S' W., 175 fathoms, 1959, R. Wigiey; Albatross III, 42°10' 

 N., 69°18' W., 100 fathoms, 1955, R. Wigiey; Albatross Station 2212, 

 39°59' N., 70°30' W., 428 fathoms, 1884; Station 2213, 39^*58' N., 

 70°30' W., 384 fathoms, 1884), Gulf of St. Lawrence. 



Distribution. — Davis Strait, West Greenland, British Isles, 

 Gulf of St. Lawrence to off New Jersey. In 25 to 428 fathoms. 



Figure 30. — Pilargiidae, Ancistrosyllis groenlandica: a, dorsal view anterior end; b, same, 

 ventral view; c, dorsal view posterior end of specimen of 52 segments, with regenerating 

 posterior end; d, right middle parapodium (sctiger 31), anterior view; e, few papillae from 

 dorsal surface; /, notopodial hooked acicular seta. 



