38 AKT. 7. — I. IJIMA : HEXACÏINELLIDA, IV. 



VITROLLULA FERTILIS Ij. 



Plate III. 

 VUrolhda ferlUis, Ijima, 'g8. 



Four spécimens in all of this genus and species have been 

 at my disposal for study. I regnrd it worth while to mention 

 the following particulars about each of them. 



Two specimens, forming Sc. Coll. Mus. Sp. No. 228, were 

 found attached in the dried state to a LophoheliaAike coral, ob- 

 tained by KuMA April 2nd, 1894, at Okinosé from a depth 

 estimated at about 429 m. (235 fnis.). Both are of about the 

 same shape, l)eing spindle-like, slightly bent and broader at the 

 oscular than at the somewhat contracted basal end. One of 

 them is shown in PL III, fig, 1. It is 15 mm. long and 6 mm. 

 broad in the middle, where the body is approximately circular 

 in cross-section and the wall measures li-l] nun. in thickness. 

 The small, thin-edged osculum at the superior end has a diame- 

 ter of 1Ï mm. The other individual of the lot is slightly larger, 

 being 16 nnn. long and 7 nnn. broad in the broadest part. 



The third sjiecimen (Sei. Coll. Mus. Sp. No. 231), shown 

 in PI. Ill, fig. 2, was obtained by myself July 23rd, 1894, at a 

 s])Ot about 4 kilometers oft' the village of Inatori on the eastern 

 coast of the Province of Izu. The dei)tli was somewhere between 

 380 m. and 414 m. (180-228 fms.) ; the bottom consisted of 

 sand, pebbles and shells. There it occurred together with Farrea, 

 Aphrocalltstes, Hyaloneiiia ajjiiie var. and Seinperella stomata, 

 specimens of all of these having been secured at the same time. 

 The body of the specimen in question is laterally compressed ; it 

 is 12 nnn. high and 8ï mm. bv 5 nnn. broad. ^Vall, 2 mm. 



