24 PROCEEDINGS OF THE ACADEMY OF [Jan., 



callus thick, columella narrow above and broad at the base, bearing 

 a median groove. 



Length 3.92, diameter 3.92 mm. 

 Habitat— St. Thomas, W. I.; collected by R. Swift. 

 Type in the collection of The Academy of Natural Sciences of 

 Philadelphia, number 10,292. This species differs from Haplocochlias 

 cijclophoreus Cpr. by having coarser spiral sculpture, by having a 

 more reflexed lip, and by being umbilicate. 

 Vitrinella hemphilli n. sp. PI. II, figs. 1, 3. 



Shell small, depressed turbinate, hyaline, translucent, polished, 

 with indications of irregular growth striae; spire acute, composed of 

 four convex whorls which are slightly concave below the suture. 

 The aperture is large; peristome acute; parietal wall convex, with a 

 very thin callus; columella concave, very narrow; umbilicus per- 

 spective, bordered by a very indistinct angle. 

 Alt. 1.56, diam. 2.5 mm. 



Habitat. — Cedar Keys, Florida; collected by H. Hemphill, in whose 

 honor it is named. 



Types in the collection of the Academy, tray number 10,236. 

 This species has a wider umbilicus than Vitrinella multistriata 

 Ver. and Vitrinella helicoidea Ad., it has a higher spire and more 

 closely coiled whorls than Vitrinella megastoma Ad. and Vitrinella 

 tryoni Bush. 

 Discopsis schumoi n. sp.. PI. II, figs. 2, 7. 



Shell small, white, moderately polished; spire rather acute, 

 depressed conic; suture impressed; whorls three and one-half, some- 

 what convex, sculptured above with a few irregular growth lines 

 crossed by delicate distinct spiral striae which are strongest below 

 the suture and above the periphery. Peripheral carina very strong; 

 base rather flat, sculptured with about twelve radial very broad costse 

 or undulations, crossed by numerous undulated spiral striae. The 

 umbilicus is large, deep, bounded by a heavy, cord-like, overhanging 

 carina, the walls within the umbilicus are concave and smooth. 

 The aperture is transversely sagittate, receding; peristome reflexed, 

 very obtuse, provided with a great prolongation of the peripheral 

 keel, the lip is arcuate above but flattened at the base and concave 

 below the keel; parietal wall broadly triangular, widest above 

 with a very heavy callus which extends forward on the body whorl 

 beyond the aperture and fills the posterior angle of the mouth; 

 the columella is concave, broadly triangular, narrowest above. 



