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. 



PL (Borsonia) plenta nov. 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 caring; 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 stride 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, lirse within exclusively con- 

 fiued 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, I^urleson 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. i Eucheilodon) reticulatoides nov. sp. PI. 5. fig. 12. 



Specific characterization. Size and general form as indicated by 

 the fio-ure; 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 



