Crinoidea. 



1. Antedon Eschrichti Müll. — PI. I. Fig. 4— H. 



Duncan (fe Sladen: A memoir on the Echinodermata of the Arctic 

 Sea to the West of Greenland. 1881. p. 73. — P. H. Carpenter: Report 

 upon the Crinoidea collected during the voyage of H. M. S. Challenger. Part 

 II. The Comatulæ. Vol. 26. 1888. p. 138. — F. Jeffr. Bell: Catalogue of 

 the British Echinoderms. 1892. p. .53. 



Forsblad Fjord, 90 — 60 fathoms. 3 specimens. — Off Henry 

 Land, с 20 fath. 4 sp. — Turner Sund, 120 fath. 7 sp. — 

 Кар Tobin, 57 fath. 1 sp. — All large speciqiens. 



2. Antedon prolixa Sladen. — PI. I. Fig. 1 — 3. 



Duncan & Sladen: Op. cit. p. 77. — F. Jeffr. Bell: Op. cit. p. 58. 



Forsblad Fjord, 90—50 fathoms. 1 specimen. — S. E. of 

 Sabine Island, 110 fath. 2 sp. — Rap Hope, 120 fath. 2 sp. — 

 Кар Brewster, 250 fath. 6 sp. 



Without entering upon the question about the possibility 

 of distinguishing with certainty A. quadrata Carp, from A. Esch- 

 richti or A. lyrolixa from A. tenella (Retz.) {= A. Sarsii Dub. 

 Kor.), I may point out some features, by which these two groups 

 are very easily distinguished; though very easily seen, the struc- 

 tures here dealt with have, to my knowledge, as yet remained 

 unnoticed, a fact the more curious as good distinguishing charac- 

 ters are rather scarce in the great, difficult genus Antedon. While 

 the three lowermost pinnulae have been very carefully examined, 

 little attention has been paid to all the numerous pinnulæ from 

 XXIX. 5 



