306 HELICIDiE. 



and the lip Is in contact wltli the preceding -wliorl, and 

 approaches the true Pupa. The shells of this genus are 

 all extremely graceful, and many are very delicate. 

 Numerous species have been recently described. — [g.] 



1. CYLINDRELLA PONTIFICA, GcULD, 

 Plate LXIX. Figure 1. 



C. testa parva, ovata, fusiformi, attenuafa, albida rufo 

 gi'iseoque marmorata ; spira acuminata ; suturis impressis, 

 crenulatis ; anfractibus duodecim, convexis confertissime 

 et oblique striatis ; ultimo anfractu carinato ; apertura or- 

 biculari, lateral!, campanulata, edentata ; labro acuto, mar- 

 gine sub-reflexo ; axe vix perforato. 



SYNONYMS AND EEFEEENCES. 



Pupa ponlifica, Gould, Proc. Best. Soc, III. 40. June, 1S48. 

 DESCRIPTION. 



Animal whitish, translucent, a little darker above the 

 head ; body very short, terminating in a blunt extremity. 

 Superior tentacles of moderate length, of nearly equal 

 diameter throughout, terminating in a rounded bulb ; 

 lower tentacles very short, nearly mdimentary. Ocular 

 points large and black. 



Shell fusiform, attenuated-cylindrical, whitish, or 

 grayish clouded and marbled with brown ; spire acu- 

 minate ; whorls from nine to twelve, rounded, with 

 numerous oblique, prominent strice, or ribs ; suture 

 impressed, crenulated by the extension of the alternate 



