LABRADOR ASTEROIDEA — GRAINGER 41 



with Verrill (1914, pi. 49, fig. la). This specimen closely resembles 

 Crihrella pectinata but is not identical with it, nor does the specimen 

 seem to be a distinct form by itself. Examination of other speci- 

 mens shows wide variation in marginal comb structure, with forms 

 intermediate between the advanced comb noted above and the 

 typical eschrichti comb. Spacing of the dorsal paxUlae varies between 

 the open pattern above and the fairly close arrangement character- 

 istic of eschrichti. Adambulacral spines frequently show 2 rows per 

 plate, with either a single large spine at the upper edge of the gi'oove 

 or, as in typical eschrichti, 2 more or less equally large spines at the 

 groove margin. One specimen shows all structures except the marginal 

 combs closely resembling the extreme form described above. The 

 marginal spines are typical for eschrichti. In others the character- 

 istics are blended differently. It seems impossible, therefore, to set 

 these specimens up as a distinct form ; rather they must be considered 

 merely as variations of the form eschrichti. 



Specimens in this collection (fig. 1) were taken all along the Labrador 

 coast from Seven Islands Bay to the Strait of Belle Isle and from the 

 outermost portion of Lake Melville. The ranges of temperature and 

 salinity (nearly —2° to 4° C. and 25 to 33°/oo) are wide. The range of 

 form eschrichti cannot yet be described because of the doubtful 

 identity of many former records of Henricia sanguinolenta, including 

 two from southern Labrador shown in figure 1. The form eschrichti 

 appears to be primarily Subarctic and Arctic, and it extends from the 

 Barents Sea westward at least to eastern North America and south- 

 ward at least to the coast of New England. 



Henricia scabrior (Mikhailovskii) 



Figure 4 



Cribella sanguinolenta forma scabrior Mikhailovskii, 1902, pp. 478-480. 

 Henricia scabrior (Mikhailovskii).— Heding, 1935, p. 31, fig. 11, 12(5, 6), 13 

 (9-11).— Djakonov, 1950, p. 92, pis. 44, 45. 



Collected at 6 stations; 36 to 110 m.; silt, mud, rock; 1949: BDl9 

 (3 specimens), Kaipokok Inlet (1); 1950: BLD15 (1), BLD16 (1); 

 1951: BLD19/39 (1), BLD40 (1). 



Among only 8 individuals there is considerable structural variation. 

 This species is obviously one of the more plastic of this extremely 

 variable genus. Heding (1935) expanded somewhat on Mikhailovskii's 

 (1903) original description of the species. Much greater variability 

 was shown by Djakonov (1950), and it is on the basis of his concept 

 of the species that the individuals of the present collection are placed 

 in H. scabrior; this assignment is made with awareness that fm"ther 

 collecting may show subspecific separations which present material 

 is not sufficiently extensive to reveal. 



