JAPANESE ASTEROIDEA. 



323 



" Remaries. — ^In lieu of giving a detailed description of tliis species, I 

 have listed the chief variations presented by a large series of specimens. 

 The various figures wiU serve sufficiently, in connection with Si,aden's 

 excellent description of the type-specimen, for purposes of identification. 

 Except in the case of young specimens there is no danger of confusing this 

 species with C. granularis, to which it seems to be rather closely related. 

 The salient differences have been already pointed out. The differences 

 between japonicus and leptoceramus are mentioned below luider the latter 

 species." 



I have two specimens of this species, both from the neigh- 

 bourhood of Misaki, and one of them from a depth of about 640 m. 

 The measurements are as follows : 



The second specimen shows signs of having regenerated at 

 the tip of three of the arms, and the relatively small number 

 of the marginals is probably to be attributed to this circumstance. 

 In one of the specimens, in which the radii are rather strongly 

 inflated, the interradial sulci are very distinct and presents a 

 smooth appearance, owing to the crowded condition of the paxil- 

 la). In the other specimen, in which the radii are hardly in- 

 flated, the interradial sulci are correspondingly inconspicuous ; but 

 the paxillœ are more closely crowded than in the radial areas. 

 The relative conspicuousness of the interradial sulci appear 

 therefore to depend largely on the degree of inflation of the 

 radial areas, which is again due, no doubt, to the condition of 

 the digestive system, the hepatic cœca of which extend to near 



