210 BULLETIN 76, UNITED STATES NATITONAL MUSEUM 



and actinal longiseries; actinal plates in two or three series ; carinals regular; supero- 

 maxginals Blightly broader than inferomarginals; crossed pcdicellariae surrounding 

 papular areas, not in circlets around spinelets; adambulacral plates with transverse 

 series of three or four spines proximally, usually three distally, all devoid of attached 

 pcdicellariae. 



1. STICHASTRELLA ROSEA (O. F. Miiller). 



Asterias rosea O. F. Muller, Zool. Dan. Prod. 1776, p. 234. 



Stichaster roseus M. Sars, Oversigt af Norges Echinodermer, 1861, p. 86. 



Stichastcr roseus var. ambiguus Farran, Fisheries Ireland; Sci. Invest., 1912, no 6 (1913), 



p. 12, pi. 2, fig. 3. 

 Stichastrella rosea Verrill, 1914, p. 40. 



Bay of Biscay to Lofoten on the Norwegian coasts; British Isles; 4 to 430 meters 

 (Mortensen). 



forma AMBIGUA (Farran). 



Off southwest Ireland, 400 to 1,300 meters. 



Genus TARSASTROCLES Fisher 



Tarsastrocles Fisher, Ann. Mag. Nat. Hist., ser. 9, vol. 12, 1923, pp. 597, 605. Type, 

 Hydraslerias verrilli Fisher. 



Diagnosis. — See key, p. 5. 



1. TARSASTROCLES VERRILLI (Fisher). 



Hydraslerias verrilli Fisher, U. S. Fish Comm. Bull, for 1903, pt. 3, 1906, p. 1106, pi. 41, 

 figs. 3, 3a, 3b. 



Hawaiian Islands, 284 to 290 fathoms. 



Subfamily Notasteriinae Fisher 



Genus ICASTERIAS Fisher 



Icasterias Fisher, Ann. Mag. Nat. Hist., ser. 9, vol. 12, p. 601. Type, Asterias panopla 

 Stuxberg. 



Diagnosis. — Abactinal skeleton very weak, irregularly reticulate, sometimes 

 degenerated into more or less disconnected plates; a definite series of carinal plates 

 bearing acicular spines; a few dorsolateral isolated spines; marginals smaller than in 

 Urasterias; superomarginals monacanthid; inferomarginals diplacanthid or sporadi- 

 cally monacanthid; nlongiseries of spineless oblong intermarginal ossicles; adambulacrals 

 diplacanthid; no actinals; crossed pcdicellariae smaller than in Urasterias, with rela- 

 tively stouter jaws, scattered thickly over the abactinal and lateral surfaces, but not 

 in wreaths or clusters on the abactinal, marginal, or adambulacral spines; gonads 

 opening just above superomarginal plates a short distance from base of ray. 



I. ICASTERIAS PANOPLA (Stuxberg). 



Asterias panopla Stuxberg, Ofversigt af Kungl. Vetensk Akad. Forhandl., 35te Argang, 

 no. 3, 1878, p. 32. — Danielssen and Koren, 1884, p. 17, pi. 5. — von Hofsten, 1915, 

 p. 68. 



Asterias panopla vars. brevimana, gracilis, inermis Kalischewskt, 1907, p. 46. 



Arctic; both coasts of Greenland, Spitzbergen, Barents Sea, Kara Sea, east- 

 ward to longitude 114° 35' E.; 18 to 560 meters (von Hofsten). 



