PLATE VI 



Figure 1. Bulimus ustulatus, Nobis. 



Habitat, unknown. 



Remarks. I procured this shell from a dealer in this City, and thus far have 

 not been able to find any description that would apply to it. It is two and five- 

 eighths of an inch in length, and about one broad. It has seven convex whorls, 

 of which the last, or body whorl, appears contracted. The margin is reflected, 

 has the appearance of a tooth on the centre of it, and is of a dirty bluish color. 

 The aperture is contracted, and somewhat ear-shaped. The umbilicus is small, 

 and formed by the reflection of the margin. The stripes are longitudinal and 

 diagonal, and are remarkable for having a burnt or scorched appearance. The 

 interior is a bluish white. 



Figure 2. Bulimus Aurora, Nobis. 



Habitat, unknown. 



Remarks. This beautiful specimen has nine slightly convex whorls, is ex- 

 tremely light; semi-transparent; surface smooth and glistening, and the color is 

 uniform throughout. It is slightly umbilicated, and is two and three-eighths of 

 an incli in length. The apex is obtuse, and the sutures compressed and 



corrugated. 



Figure 3. Achatina bicolor. Nobis. 



Habitat, unknown. 



Remarks. — This shell has six convex whorls, the sutures of which are marked 

 by a broad, yellow-colored band. The lower parts of the whorls are of a dark 

 reddish brown. The columella is very much arched, and the truncation very 

 abrupt ; lip acute ; aperture white. I have three specimens ; but this one, al- 

 though the smallest, is the most perfect. 



