MONOGRAPH OF JAPANESE OPHIUKOIDEA. 281 



Ophiura inonostœcJia Clark. 



Opliiura monosfœcha : Bnll. Ü. S. Nat. Mus., LXXV, 1911, p. 65, fig. 

 17. 



Off Honshu; 153 fathoms (ClaPvk). Suruga Gnlf ; 270 fathoms 

 (Claek). Off Hiuga ; 405-578 fathoms (Claek). 



Ophiura alhnta (Lyman). 



Opldoglyplia albcda : Lyman, Bull. Mus. Comp. Zool., Y, 1873, p. 77, 

 PI. IV, figs. 95-97 ; Lyman, Rep. Clialleuger, V, 1882, p. 51, PI. V, figs. 

 13-15. 



Sagami Sea ; 775 fathoms (Lyman). 



Ophiura calyptolepis (Clark). 



Ophiura calyptolepis : Clark, Bull. U. S. Nat. Mus., LXXV, 1911, p. 

 67, fig. 18. 



Uraga Channel ; 70-197 fathoms (Claek). Sagami Sea ; 153- 

 405 fathoms (Claek). 



Ophiura cryptolepis (Clark). 



Ophiura cryptolepis : Clark, Bull. U. S. Nat. Mus., LXXV, 1911, p. 

 1911, fig. 19. 



Off Omai Zaki ; 475-505 fathoms (Claek). 

 Bering Sea. Alaska. Washington. 



Ophiurolepis Matsumoto, 1915. 



Disk covered with two kinds of scales, the larger ones being 

 surrounded by a zone of smaller ones. Radial shields moderate- 

 ly large, rounded, widely separated from one another. Genital 



