HELIX-EULOTA. 221 



by spiral lines ; shining, buff-horn colored. Spire very sharply 

 conoid, the apex flat, shining. Whorls 4, slightly convex, regularly 

 increasing, separated by a rather impressed suture, the last whorl 

 obtusely angulated above the periphery, convex beneath, roundly 

 angled and somewhat swollen around the umbilicus. Aperture 

 little oblique, somewhat rounded-ax-shaped ; peristome thin, very 

 narrowly expanded, the columellar margin is dilated above, and 

 forms a distinct angle with the basal lip. 



Alt. 11'5, diam. 20 mill.; aperture width 11*5, long. 9'5, alt. 9 

 mill. (Mild/.) 



Tenimber Is. 



Eulota tenimberica MLLDFF., N. D. M. G. 1892, p. 91, t. 1, f. 3. 



Remarkable for the semi-translucent, thin shell, with an oily lus- 

 ter, reminding one of Macrochlamys. The spiral sculpture, periphe- 

 ral angle, the form of the umbilicus and the angle at the foot of the 

 columella, show it to belong to the group of H. similaris. 



H. BIT^NIATA Mollendorff. PI. 58, figs. 18, 19. 



Shell broadly umbilicated for Eulota, subglobose, transversely 

 striatulate, decussated by extremely close, very delicate spiral 

 lines ; opaque, whitish, ornamented with two rather wide brown 

 bands. Spire convex-conoid, the apex obtuse, glabrous, rufous- 

 brown above, as far as the fourth whorl. Whorls 4J, slightly con- 

 vex, the last subacutely carinated at the periphery, convex beneath, 

 and very shortly descending in front. Aperture very oblique, 

 truncate-oval ; peristome little expanded, somewhat white lipped, 

 the columellar margin dilated, reflexed. 



Alt. 10, diam. 13'5 mill., aperture width 7'75, long. 7, alt 6'25 

 mill. (Mlld/.~) 



Tenimber Is. 



Eulota bitceniata MLLDFF., N. D. M. G. 1892, p. 91, 1. 1, f. 7. 



The surface of fresh specimens is dull, and the color is not pure 

 white, but passing into yellowish. 



H. GONIOSTOMA Mollendorff. Vol. IX, pi. 15. figs. 4, 5. 



Shell narrowly but perspectively umbilicated, conoid-globose, 

 rather solid, transversely striatulate, very minutely granulated; 

 grayish-white or corneous-brown, rarely reddish. Spire more or 

 less conically elevated, the apex rounded. Whorls 5, convex, slowly 

 increasing, separated by a rather deep suture, the last laterally 



