OP CONCHOLOQY. 309 



4. Hygromia Berlandieriana, Moricand. 



Plate 5, figure 4. 



Globose, spire elevated, prominent, suture deeply impressed ; 

 whorls 5, well rounded, thin, translucent, scarcely striate, 

 broadly rounded at periphery, contracted around the aperture ; 

 lip much expanded, white, with a much thickened internal 

 margin ; parietal wall sometimes with a deposit of callus ; base 

 rounded, umbilicus minute. White to yellowish-green, with 

 sometimes a faint, narrow brown band above the periphery. 



Diam. 12, height 9 mill. 



Arkansas to Texas, Mexico. 



Judging from the figure of H.virginalis, Jan., published in 

 Chemnitz "Conchylien Cabinet." I do not agree with Binney in 

 considering that species a synonym of Berlandieriana, but be- 

 lieve it to = griseola. 



•5. Hygromia griseola, Pfeiffer. 



Plate 5, figure 5. 



Globosely depressed, spire convexly elevated ; whorls 4-4J, 

 well rounded, slightly striate; aperture lunar, lip white, a 

 little expanded; umbilicus very narrow. Light brown, with 

 a darker band, bordered with white, above the periphery. 



Diam. 10, altitude 6 mill. 



Texas, Mexico, Guatemala. 



Smaller, more depressed, and differently colored from H. 

 Berlandieriana. 



AGLAJA, Albers. 



This group includes most of the large, brilliantly colored 

 Californian species, and is remarkably restricted, none of its 

 members inhabiting east of the Eocky Mountains. Albers 

 places most of those known to him in the genus Arionta, leaving 

 only one — A.fidelis, in Aglaja.. An examination of the West 

 Coast species of Arionta, in Albers, shows that he has confoun- 

 ded, in that genus, two distinct groups, of which, that contain- 

 ing the more globose species, with nearly covered umbilicus, 

 really pertains to it ; while those that are turbinately depressed, 

 belong to Aglaja. Very many of these shells have never been 

 figured, and very little is known regarding them. I have sup- 



