VIVIPARA. 23 
**. Not banded, spire short, form oval-quadrate. 
9. VIVIPARA TROOSTIANA, Lea. 
Plate 15, fig. 3. 
Shell -ventricose-conical, thin, pellucid, 
smooth, perforate; spire short, sutures much 
impressed ; whorls 4, convex; yellowish horn- 
color, white within the large rounded aperture. 
Length 18, diam. 16 mill. 
Tennessee. J 
More nearly related by form to V. subpur- 
purea than to any other species. My figure is 
drawn from the type specimen. 
10. VIVIPARA HALETANA, Lea. 
Plate 15, fig. 5. 
Shell ventricose-conical, nearly globose, 
rather thin, imperforate; whorls 4, very con- 
vex, the spire short and small, and suture well 
impressed. Reddish horn color, the large 
rounded aperture bluish within. 
[49] 
