66 PROCEEDINGS OF THE ACADEMY OF [1895. 



Cedar Creek, southeast corner of Wheelock League, Robertson Co., 

 Tex. 



Geological horizon. Lower Clai borne Eocene. 



Type. Texas State Museum. 



Cancellaria penrosei nov. sp. PI. 6, fig. 4. 



Specific characterization. Size and general form as indicated by 

 the figure; whorls 5; 1, 2, 2? smooth; 3, 4,cancellated by about 

 18 sharp ribs over which pass 5 spiral lines, the uppermost on the 

 humeral angle and some little distance above the others; body whorl 

 with about eighteen costse and twelve revolving lines, the uppermost 

 of which, on the humeral angle is separated from the next below by 

 a double space; aperture with two columellar folds and about six 

 labral crenulse; umbilicus moderate. Surface not polished as in the 

 two above-described species. 



Localities. Smithville, Bastrop Co.; Dr. Williams' quarry, R. 

 Stephenson's Headright, Brazos Co., Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



Cancellaria bastropensis nov. sp. PI. 6, fig. 5. 



Specific characterization. Size and general form as shown in the 

 figure; whorls 7; nuclear whorls 2?, of which two are smooth, and 

 the last half finely cancellated ; 4, 5, 6 somewhat irregularly cos- 

 tate, about ten costse on the penultimate whorl; spiral striae few and 

 strong on the sides of the whorls, but becoming more closely set and 

 finer on the subsutural region ; body whorl with irregular, obtuse 

 costse crossed by about fourteen spiral lines, strong medially but de- 

 creasing in size towards the suture; labral dentes six on a raised 

 ridge; columella with two distinct folds and a rudimentary third be- 

 low ; umbilicus rudimentary. 



Locality. Smithville, Bastrop Co., Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



Cancellaria ulinula nov. sp. PL 6, fig. 6. 



Specific characteristics. Size and general form as indicated by the 

 figure; whorls 4; 1, 2 smooth; 3 with seven spiral striae ; body whorl 

 with about eighteen strong revolving lines and an equal number of 

 intercalated fine striae, lines of growth prominent; columella with 



