18 NATURAL HISTORY BULLETIN 



rather stout and blunt. It appears to be the undetermined star- 

 fish described by Nutting (Narrative Bahama Exped., bottom of 

 page 168) . This species was dredged by the Bahama Expedition 

 at station 43, off Sand Key, Florida, in 15 fathoms ; at station 47, 

 off Key West, in 80 fathoms ; and at station 61, off Key West, in 

 75 to 80 fathoms. Several specimens were obtained. Perrier 

 recorded it from the Blake stations, off Florida, in 85 and 110 



fathoms, one from each place. The type had the radii 6°"° and 

 43mm 



Orthasterias contorta (Per.) Verrill. 



Asterias contorta Perrier, Bull. M. C. Z., vol. ix, p. 1, 1881; Mem. Etoiles 



de Mer, p. 199, 1884. 

 0. contorta Verrill, op. cit., p. 48, 1914a. 



This species was not figured by Perrier and only imperfectly 

 described. The size was not given. I did not examine his cotypes, 

 in the Museum of Comp. Zoology, except in the case of a single 

 lot of small specimens (sta. 155, 88 fathoms). These appeared 

 to me to be the young of 0. suhangulosa. 



According to Perrier 's description it has no dorsal rows of 

 plates except the carinals, which might be due to immaturity. 

 He also mentions that the submarginal papulse are large and 

 placed singly. In 0. suhangulosa they are rather small and 

 stand two or three together. 



Without farther study of the types it is not possible to say 

 whether they are distinct species. 



Perrier recorded this from ten Blake stations, in 11 to 188 

 fathoms, from Florida reefs to Cariacou and Barbadoes. 



Genus Coscinasterias Verrill. 



Cosinasterias Verrill, Trans. Conn. Acad. Sci., i, p. 248, 1867. (Type, C. 



muricata V. = (?) C. calamaria (Lam.).) 

 Stolasterias (pars) Sladen, Voyage Chall., vol. xxx, pp. 563, 583, 1889. 



(Type, C. tenuisinna.) Non Perrier. 

 Coscinasterias and Polyasterias Perrier, Exped. Trav. et Talisman, p. 108, 



1894. 

 Coscinasterias Verrill, op. cit., pp. 45, 46, 1814a. 



Disk small, rays elongated, somewhat angular, usually carinate. 

 Dorsal plates of the rays stout, four-lobed, usually arranged in 

 three or five regular rows, besides the upper marginals, which 

 form regular lateral rows. Interactinal plates form one primary 



