238 ART. 7. 1. IJIMA : HEXACTINELLIDA, IV. 



The four species occurring in the Sagami Sea, viz., R. victor, 

 R. mollis, R. imguiculaius and R. cajnllakis, will now be dealt 

 with in detail. 



RHABDOCALYPTUS VICTOR Ij. 



Pis. XVII., XVIII., and XIX. 



Rhabdocalyptus victor. Ijima, '97, p. 52. — Cii. Gkavier, 

 '99, p. 421. 



Specimens of this species have passed through my hands in 

 no small numbers. The localities in tlie Sagami Sea where they 

 have been obtained, so far as is known to me, are : Homba 

 (572-859 m.) and Outside Okinose (by both the Iwado and Sen- 

 genzuka lines, 501-572 m.). In these localities the species seems to 

 be moderately common. INIost of the specimens bore at the base 

 samples of a tufaceous bottom ; others grew on corals, on dead 

 Chonelasma or on Hexactinella lorica. 



On the following page (text-fig. 8) and in Plate XVII., I 

 have depicted several of the better preserved specimens that I 

 have seen, which are illustrative of the shapes assumed Ijy the 

 species. 



In text-figure 8, in which all the figures are drawn to the 

 scale of s natural size, A represents a specimen which belonged 

 to jMr. OwsTON. It was 23 inches high. Oscular margin directed 

 upwards. Lateral compression of body especially distinct at the 

 base, which is bent in the sagittal plane. 



