16 ART. 9. — I. IJIMA I HEXACTINELLIDA. 



branches, unless it be a faulty representation of a discohexaster 

 principal bearing two terminals. 



As already alluded to, tbe same discohexaster in the ordinary 

 form, in which each principal is supplied with 2 or o terminals, 

 is however not wanting ; but such forms occur every rarely indeed. 

 In feet I have met with only two such cases, measuring respec- 

 tively 122/; and 105 // in diameter. They were thus much 

 smaller than the hexactinose variety, and this fact seemed to 

 bring the relationship between C. elegans and speciosa very close 

 indeed. 



Finally, the peculiar spicule mentioned and figured by Mar- 

 shall (I.e., figs. 66* and k), which shows some resemblance to 

 the central portion of a graphiocome but is much too large for 

 it, has not been discovered by me. Probably he was right in 

 regarding that spicule as of extrinsic origin. 



Corbitella pulchra (F. E. Sen.). 



Tœgeria pulchra. Narr. Chall. Cruise, '85, fig. 158. — F. E. 

 Schulze, '86, p. 41.— F. E. Schulze, '87, p. 94 ; PI. 

 vu, PI. vin and PI. xi, figs. 1-3. — F. E. Schhlze, '95, 

 pp. 35, 49. 



The genus Tœgeria was instituted by F. E. Schluze for the 

 single species, T. pulchra, known in a unique specimen that was 

 obtained by the " Challenger " near the Fiji Island from a depth 

 of 1115 meters. From the detailed descriptions given by that 

 investigator, it clearly follows that that species can not be held 

 generically separate from either C. speciosa or C. elegans. The 

 name Tœgeria should be put down as a synonym of Gray's 

 older name Corbitella. 



