- 1 1 



ü. sp. PI. XVII, fig. 9. 

 5., 119 ; ; I 5a> 159 M. Globigerine ooze. ; S] 



ilate, rather solid, yellowish-brown, shining. Nuclear whorls eroded, subsequent 

 whorl ieparated b) a conspicuous suture in a rather broad channel, caused by the 



the whorls just below and stil] stronger above the suture; the whorls are nearl) 

 bul slightlj convex towards their base. Sculpture consisting of broad, flat ribs on the 

 r whorls, becoming faint on the fourth whorl and nearly disappearing on the subsequent 

 . with the exception of a few occasional ribs; moreover the shell is covered with very fine 

 growth-striae and extremely fine spiral striae, only visible under a strong lens; last whorl with 

 an obtuse angle near the base and in some specimens a few stronger spiral striae below the 

 angle. Aperture ovate, angular above, rounded below, with a thin, nearl) straight outer 

 margin, columellar margin regularlv curved, slightly reflected, no umbilical slit; the margins an- 

 connected by a moderately thick layer of enamel; interior of aperture smooth. 

 Alt. 10, lat. 2 , : apert. alt. 2 1 ; . lal. 1 ! , Mill. 

 Alt. 1 1. hu. 2 , : apert. alt. 2 3 ., lat. 1 '/, Mill. 



A very puzzling species, externally resembling an /{///sa hut without columellar plait. 

 I ha. I two specimens to Mr. Melvill, who writes about it : a I incline to Elusa if not a 



abnormal Eulimella\ the longitudinal riblets of the apical whorls are like Elusa but there 

 is no columellar plait visible, the apex seems heterostrophe, the brown colour is like Elusa also". 

 As t'. the plait, 1 have opened three whorls of a specimen, but could not detect tracés of a 

 plait. Should we consider the species as an abnormal Elusa, or as an abnormal Eulimella, or as 

 a representative of a hew group? In accordance with Mr. Melvill's predominant view, I have 

 foliowed the fust method, without being quite certain, that it will prove to be the right manner. 



Eulimella Forbes. 

 1. Eulimella} sibogae n. sp. PI. X\' II, fig. 10. 



Stat. 52. (j '3 .4 S., 1 19 5^-7 I— Savu Sea. 959 M. Globigerine ooze. 1 Spcc. 



Shell rather large for the genus, subulate, smooth, yellowish-white. Nuclear whorls a 



little eroded, subsequent whorls ; ! ;,, slightly convex, separated by a distinct suture. Sculpture 



of fine and coarser growth-striae, which laiter form however no distinct ribs, crossed 



by very indistinct spiral striae, scarcely perceptible on many parts of the shell: last whorl 



elongately-rounded. Aperture mot quite intact ovate, angular above, outer margin thin, regularly 



arched, l^ase probably rounded, but subangular, perhaps 1>\- the partly broken margin); columellar 



margin straight, slightly reflected, nearly covering a tracé of an umbilical slit. Interior ol 



mooth. 



Alt. 1 ; apert. alt. 2 8 / 4 . lat. 1 ';, Mill. 



This is also a very dubious species, it is nearly too bad tbr description, in so difficult 

 a group, but still in too good condition, to Ik; neglected, s " it may 1»- located here, untill 

 further investigation will clear up its somewhal obscure position in the system. 



12 



