1895.] NATURAL SCIENCES OF PHILADELPHIA. 65 



or two humeral lines, (c) one prominent line on the humeral angle, 

 (d) many alternating lines below, (e) numerous costse (15 on the 

 body whorl), most prominent on the humeral angle. 



Locality. Smithville, Bastrop Co., Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



Genus CANCELLABLE. 

 Cancellaria panones nov. sp. PI. 6, fig. 1. 



Specific characterization. Size and general form as shown in the 

 figure; whorls 5; 1 and 2 smooth; 3 and 4 with sharp Scala-like 

 costse, shoulder narrow, slightly convex ; body whorl shouldered as 3 

 and 4, with about fifteen smooth sharp costa?, spirally striate below; 

 mouth ovate triangular, with about ten labrum crenulaB and three 

 columellar folds ; umbilicus not very large. 



In this species the ribs are often somewhat irregular. On the 

 spiral whorls two or three ribs are considerably larger than the 

 others. The costse just behind the aperture are generally of small 

 size or evanescent. 



Localities. Smithville, Bastrop Co.; 2 miles east of Alto, Chero- 

 kee Co., Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



C. panones, var. smithvillensis nov. var. PL 6, fig. 2. 



Differs from the typical form in having spiral striae ; about four 

 on the lower spiral whorls and fourteen on the body whorl. The 

 mouth is slightly larger in proportion to the length of the shell. 



Localities. Smithville, Bastrop Qo. ; Little Brazos River, near 

 iron bridge on Moslev's Ferry road; Orrell's crossing, Elm Creek, 

 Lee Co., Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



C. panones, var. junipera nov. var. PI. 6, fig. 3. 



In this variety the spiral strise are quite numerous, the mouth is 

 small in comparison with the length of the shell, and there are but 

 two prominent columellar folds. 



Localities. Smithville, Bastrop Co. ; Bluff on Colorado River, 

 Just below the mouth of Alum Creek, not far above Smithville; 



