320 AMERICAN JOURNAL 



4. Polymita redemita, Wm. G. Binney. 



Plate 6, figure 7. 

 Globose-conic, rather thin, wrinkled, closely and minutely 

 granulate; spire elevated, obtuse, suture impressed; whorls 

 6, convex, last quite large and rounded, depressed towards 

 the aperture; aperture rather large, very oblique, lip reddish 

 ash-color, thickened, ends approaching, entirely covering the 

 umbilicus. Brown, banded with chestnut above the middle. 



Diam. 21, height 12 mill. 



California. 



Dr.Newcomb considers this a variety of Nickliniana, but it 

 appears to me that it is distinguished by its closed umbilicus, 

 as well as by texture and color. 



5. Polymita pandorsa, Forbes. 



Plate G, figure 8. 



Depressed-globose, thin, wrinkled, minutely striate ; whorls 

 5, the last descending towards the aperture; aperture round- 

 ed, the lip thickened internally, expanded, dilated and reflected, 

 covering the umbilicus. Brown or violet above, whitish be- 

 neath, the periphery encircled by a brown band, brown within, 

 with a white band. 



Diam. 17, height 14 mill. 



Santa Barbara, and Southern California. 



This species is smaller, but very closely allied to P. Tryonii. 



6. Polymita levis, Pfeififer. 



Plate 5, figure 21. 

 Plate 6, figure 6. 



Globose, thin, obliquely striate, obsoleiely granulate ; spire 

 short ; whorls 5, a little convex, the last inflated ; aperture 

 rounded-lunar, lip thickened within, sometimes subdentate on 

 the columellar portion ; umbilicus narrow, nearly covered by 

 an expansion of the lip. White, varied by series of pellucid 

 spots, sometimes running into stripes. 



Diam. 16, height 13 mill. 



Southern California. 



