﻿•4 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vol. 47 



appear somewhat more closely spaced on the base than between the 

 sutures. The last whorl is deflected near the aperture and is de- 

 cidedly constricted behind the strong peristome. Aperture rather 

 small, decidedly oblique, subcircular, slightly taller than wide; outer 

 lip with a broad, thickened, strongly reflected, white peristome which 

 bears a low, moderately broad tubercle on the inner border of the 

 basal wall ; parietal wall covered by a thin transparent callus bear- 

 ing a weak elongated tubercle on its middle, the attenuated end of 

 which points downward to the junction of the columella and the 

 parietal wall. 



The specimens are numbered 152,953, U. S. N. M. The type 

 measures: Height, 8.2 mm.; long diameter, 15 mm.; short diameter, 

 [3.3 mm. Aperture: Outside measurements: width 7 mm.; height, 

 7.3 mm. ; Inside measurements : width, 5.3 mm. ; height, 5 mm., width 

 of umbilicus, 2.5 mm. 



The second specimen agrees in every way with the type. It is a 

 dead specimen and appears uniformly bluish-white. 



Ashmunella townsendi is most nearly related to A. rJiyssa Dall, 

 but is much smaller than that form and is uniformly more strongly 

 sculptured. 



