1895.] NATURAL SCIENCES OF PHILADELPHIA. 63 



from Calhoun Co., Fla. In Texas: Smith ville, Bastrop Co.; Col- 

 lege Sta., Brazos Co.; 2 miles west of Crockett, and on Jones' 

 farm, Hurricane Bayou, Houston Co.; Collard's farm, Town Branch, 

 Brazos Co. 



Geological horizon. — Lower Claiborne Eocene, Vicksburg Eocene, 

 Lower Miocene. 



Type. — Aldrich's collection. 



PI. (Borsonia) plenta uov. sp. (by Aid. and Har.). PI. 5, fig. 11, a. 



Specific characterization. — General form as indicated by the figure; 

 whorls 13 or 14; 1, 2, 3 smooth, globose; 4 slightly nodular or sub- 

 costate submedially and with an elevation just below the suture ; 5, 

 6, 7 subcarinate with nodules on the carinas; 8, 9, 10, 11 carinate 

 submedially, carina bisected by a depressed spiral line; space be- 

 tween the carina and suture above concave, traversed by about six 

 spiral striae of equal size, with a slightly elevated band just below 

 the suture; 12 and 13 obtusely carinate with about six fine lines 

 above and four below; body whorl finely striated above the carina 

 and for a short distance below, thence coarsely or alternately striate 

 to the end of the canal ; outer lip sharp, liras within exclusively con- 

 fined to the inflated portion of the shell and disappearing some dis- 

 tance before reaching the margin of the lip; inner lip very thin 

 showing only on well-preserved specimens; columella with one strong 

 plait located three-fourths of the way from the base to the upper 

 terminus of the aperture. 



In a few specimens there are traces of a second plait on the colu- 

 mella a short distance below the one referred to above. 



Localities. — Smithville, Bastrop Co. (rare); Wheelock, Robert- 

 son Co.; Mosley's Ferry, Brazos River, Burleson Co.; Cedar Creek, 

 Wheelock League, Robertson Co.; College Sta., Brazos Co.; Camp- 

 bell Creek, Robertson Co., Tex. 



Geological horizon. — Lower Claiborne Eocene. 



Type. — Texas State Museum. 



PI. (Eucheilodon) reticulatoides nov. sp. PI. 5, fig. 12. 



Specific characterization. — Size and general form as indicated by 

 the figure; whorls about 10; 1, 2, 3 smooth, tapering rapidly to a 

 point; 4 more or less costate; remaining whorls ornamented as fol- 

 lows : just below the suture, a raised line or band, below which a 

 sunken zone is marked in the larger whorls by from one to three 



