YITUI.VIX/E. 119 



placentula, Shuttl. subrutila, Migh. 



plerophora, Moric. testae, Phil. 



protensa, Firus. troehilioides, D'Orb. 



pura, Alder. unidentata, Say. 



saxatilis, Couth. vortex, Pfeiff. 

 spleudidula, Pfeiff. 



Sub-fam. VITMNIN.E. 



Animal too large entirely to enter the shell. Mantle- 

 margin more or less produced, reflexed over the sides, or 

 sometimes entirely covering the shell. Tail often obliquely 

 truncate, but riot furnished with a caudal gland. 



Shell thin, usually horny and transparent ; aperture very 

 wide. 



Genus PFEIJTEMA, Gray. 



Animal large for the size of the shell. Mantle-edge 

 expanded, thin, reflexed over the outer surface of the shell, 

 forming an even margin beyond the peristome. Foot 

 moderate, depressed behind, acute at the tip, without any 

 caudal gland. 



Shell globose, imperforate, thin, brittle, white, pellucid ; 

 spire with the whorls small, the third and fourth rapidly 

 enlarging, the last inflated; aperture rounded, lunate; 

 columella slightly and regularly arcuated ; peristome thin, 

 straight, acute. 



Ex. P. micans, Pfeiffer, pi. 72, fig. 1. Shell, P. micans, 

 fig. 1, a. 



Mr. Cuming discovered this animal in great abundance 

 on the leaves of bushes at the extreme north part of the 

 Island of Luzon. 



