PUPA. 319 



introduce it under any other name. It is most likely 

 that P. cyclostoma, Kiister, is merely a small speci- 

 men of this species, its variation in size being very 

 considerable. — G.] 



2. PUPA MODICA, GOULD. 



Plate LII. Figure 2. 



P. testa minuta, fragili, ovato-conica, elongata, albida vel 

 cornea, edentata, imperforata ; anfractibus quinque con- 

 vexis, apice acuminata ; apertura campanulata, labro ex- 

 panse, baud planulato. 



SYNONYMS AND KEFEKENCES. 



Ptipa modica, Gould, Proc. Best. Soc. Nat. Hist. III. 40, June, 1848. 

 DESCRIPTION. 



Shell small, delicate, elongated, ovate-conic, whitish 

 or pale horn-colored, imperforate. Whorls five, convex, 

 the apex of the spire acute. Aperture expanded, lip 

 revolute, but not flattened ; throat destitute of teeth. 



Length of axis one-tenth of an inch ; breadth one- 

 fifteenth of an inch. 



Geographical Distribution. Found in Florida by 

 Mr. Bartlett. 



Remarks. The form and other characters of this 

 shell are almost precisely those of Bulinms fallax, 

 except that it is only about half as large, and has about 

 two whorls less to the spire. The aperture is somewhat 

 more bell-shaped ; and the lip is thin and revolute instead 



