MONOGIJAPH OF JAPANESE OrHITJEOIDEA. 



137 



shields triangular, more or less separated or the pairs slightly in 

 contact at the outermost part ; dorsal arm plates small, separated 

 from each other by the lateral arm j)hites, entirely free of granules ; 

 arm spines long, the uppermost one being nearly thrice as long as 

 the corresponding arm joint ; lower arm spines clavate tylota. 



Ophiosemnotes œdidisca (Clark). 



OpMacantha œdidisca : 

 220, fig. 101. 



One speci- 

 men ; Albatross 

 station 4958, off 

 Hiuga ; 405 



fathoms. 



Off Hinga; 

 405-578 fath- 

 oms (Claek). Off 

 Omai Zaki ; 505. 

 fathoms (Claek). 

 Off Kii; 544- 

 545 fathoms 

 {Claek). 



Though this 

 species ap- 



parently re- 



sembles certain 

 species of Ophi- 

 ophthalmus, the 

 high and convex 

 disk, the very 



Clark, Bull. U.S. Nat. Mus., LXXV, 1911, p. 



„o'%oo2 





Fig. 34. Ophiosemnof es œdidisca. x8. a. From above, h. From 

 below, c. Side view of two arm joints nenv rlisk. 



