138 oi'HIUROIDEA. 



? Euryale scutatum, Be Bl. Actin. (1834) p. 246 fnon Gould, Invert. 



Mass. (1841) p. 345). 

 Astrophyton snutatum, Forbes, Brit. Star/. (1840) p. 67 (non Ayassiz, 



Mem. Soc. Neuch. ii. (1839), Notice §c. p. 11). 

 Astrophyton linckii, M. Tr. Syst. Ast. (1842) p. 122 ; Lyman, III. 



Cat. M. C. Z. i. (1865) p. 190 ; Norman, Ann. 8? Mag. xv. (1865) 



p. 105. 

 Gorgonocephalus linckii, Lyman, Chall. Rep. Oph. (1882) p. 264 ; 



Hoyle, Proc. R. Phys. Soc. Ed. viii. (1885) p. 138. 



Disk with a single madreporite at one of the angles of the rays, 

 equally covered on the whole of the dorsal surface with strong 

 spinous cylinders or cones, the longest near or on the margin ; un- 

 equal and irregular development of spines on the ventral surface. 

 No tubercles on the arms, but on the ventral side a median band of 

 large granules ; papillae well developed, three and then four in a 

 row. 



Distribution. North Atlantic (eastern side). 



No specimen from British area in the collection of the British 

 Museum. 



2. Gorgonocephalus eucnemis. 



? Asterias caput-medusae, Fair. Faun. Grcenl. (1780) p. 372. no. 367 ; 



Deivhurst, Nat. Hist. Cetacea, (1834) p. 279. 

 Astrophyton eucnemis, M. Tr. Syst. Ast. (1842) p. 123; Lutk. K. 



Dansk. Tid. Selsk. Skrift. v. (1859) p. 70, pi. ii. tigs. 9-19; Sars, 



Nory. Ech. (1861) p. 4 ; Lyman, 111. Cat. M. C. Z. i. (1865) p. 181; 



Marenzeller, Denks. Ak. Wien, xxxv. (1S78) p. 383. 

 Gorgonocephalus eucnemis, Lyman, Chall. Rep. Oph. (1882) p. 263 ; 



Hoyle, Proc. R. Phys. Soc. Ed. viii. (1884) p. 137. 



Disk with a single madreporite at one of the angles of the rays. 

 Surface of disk with thin integument, through which the elongated 

 radial shields stand out very prominently ; the surface of the shields 

 loosely covered with granules, but there are no spines or tubercles ; 

 skin in interbrachial areas smooth, as are, too, the under surfaces 

 of the arms ; three, four, or five papillae. 



Colour yellowish brown. 



Distribution. Northern parts of Atlantic (east and west). 



