76 PROCEEDINGS OF THE ACADEMY OF [1895. 



Locality. Smiley's Bluff, Brazos River, 2 miles above the mouth 

 of Pond Creek, Milam Co., Tex. 



Geological horizon. Midway Eocene. 



Type. Texas State Museum. 

 Pseudoliva ostrarupis, var. pauper nov. var. PL 8, fig. 4. 



Genus TENUISCALA. 

 Tenuiscala trapaquara nov. sp. PI. 8, fig. 7. 



Specific characterization. Size and general form as shown by the 

 figure; whorls 12 or more; nuclear 4 smooth and polished; 5-11 

 traversed by fine sharp longitudinal costse and numerous spiral lines, 

 the latter consisting of five coarse lines occupying the medial and 

 basal portions of the whorl and as many microscopic lines on a sub- 

 sutural zone; body whorl generally but imperfectly preserved, sculp- 

 turing as iii the whorls immediately above, the base, however, being 

 exposed, shows from 12 to 15 strong spiral lines. 



Localities. Mosley's Ferry, Brazos River, Burleson Co.; Smith- 

 ville, Bastrop Co., Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



T. trapaquara, var. engona nov. var. 



Slightly shorter, more angulated, and with a broad subsutural band 

 without strong revolving striae. 



Locality. Smithville, Bastrop Co. , Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type.^ Texas State Museum. 



Genus PYBAMIDELLA. 

 Pyramidella bastropensis nov. sp. PI 8, fig. 9. 



Specific characterization. Size and general form as shown by the 

 figure; whorls 13 or 14, polished; suture channelled; one sharp strong 

 fold on the columella. 



This species resembles to some extent E. perexilis Con., but differs 

 from it by being broader at base and more rapidly tapering in the 

 lower four or five whorls. 



Locality. Smithville, Bastrop Co. , Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



