84 PROCEEDINGS OF THE ACADEMY OF [1895. 



Genus AMAUROPSIS. 

 Amauropsis singleyi nov. sp. PI. 9, fig. 12. 



Specific characterization. — General form and size as indicated by 

 the figure; spire pointed and high; whorls 7; body and penultimate 

 whorls shouldered above as in N. recurva; umbilicus small, partially 

 hidden by the labium ; margin of the aperture sharp, reflected. 



This species might be mistaken for the young of recurva were it 

 not for the fact that the two have differently formed umbilici. In 

 recurva there is a ridge formed by the continuation of the lower 

 margin of the aperture that, after passing below and to the left of 

 the umbilicus, winds up into the same as described by Aldrich. In 

 singleyi the lower margin of the aperture stands out sharply. If 

 traced upward and inward it will be found to follow the labium 

 about one-third way across the umbilicus and then to wind up into 

 the same. 



Locality. — Cedar Creek , Lee Co. , Tex. 



Geological horizon. — Lower Claiborne Eocene. 



Type. — Collection of J. A. Singley. 



Genus DILLWYNELLA. 

 Dillwynella'? texana nov. sp. PI. 9, fig. 13. 



Specific characterization. — Size and general form as indicated by 

 the figure; whorls 4; spiral, smooth, and shining; body whorl nearly 

 smooth but showing a slight tendency to bear furrows or lines radiat- 

 ing from the suture; umbilicus small; mouth round. 



The umbilical portion of this shell appears to be more or less 

 whitened or enameled. 



Locality. — Jones' farm, Hurricane Bayou, Houston Co. ; from 

 Lee County and Mosley's Ferry, Brazos River, (Aldrich's collec- 

 tion ) . 



Geological horizon. — Lower Claiborne Eocene. 



Type. — Texas State Museum. Unfortunately broken since figur- 

 ing. 



Genus GAZA. 



Gaza ? aldrichiana nov. sp. PI. 9, fig. 14. 



Specific characterization. — Size and general form as indicated by 

 the figure; whorls 4; 1 minute, non- protruding; 2, 3 rather small 

 and tumid, marked by a few radiating lines which extend from the 

 suture downward about two-thirds across the whorls, reminding one 



