64 PROCEEDINGS OF THE ACADEMY OF [1895. 



spiral incised lines crossed obliquely by lines of growth giving this 

 portion of the whorl a cancellated appearance ; on the body whorl, 

 below the three or four cancellated strong medial spiral lines, there 

 are from 15 to 18 more or less crenulated spiral lines, tending in 

 some instances to alternate in size ; labrum within with strong lira- 

 tions; columella rather long, straight, and with one strong plait located 

 above the middle, below which there are generally several minor folds, 

 decreasing in size downward. 



In many of its features this species is intermediate between the 

 young of Borsonia plenta as here figured and Eucheilodon reticulata. 



Locality. — Mosley's Ferry, Brazos River, Tex. 



Type. — Texas State Museum. 



PL (Taranis) finexa nov. sp. PL 5, fig, 13. 



Specific characterization. — Size and general form as indicated by 

 the figure; whorls 6; 2 nuclear, smooth; remaining whorls with (a) 

 a subsutural raised ridge, (b) a strong medial carina, (c) a prominent 

 raised line between the carina and the suture below, (d) fine costse 

 passing perpendicularly on the lower half of the whorl and obliquely 

 to the left from the carina' to the suture above; body whorl bicari- 

 nate, between the two carime, a strong raised line, below the carina 

 about six raised spiral lines; columella slightly concave; labrum 

 within showing channels and ridges corresponding to the exterior 

 marking. 



Locality. — Smithville, Bastrop Co., Tex. 



Geological horizon. — Lower Claiborne Eocene. 



Type. — Texas State Museum. 



PL (Clathurella?) fannse nov. sp. PL 5, fig. 14. 



Specific characterization. — Size and general form as indicated by 

 the figure; whorls 7 ; 1-3 smooth, 4 finely and obliquely costate, 

 remaining whorls cancellated by narrow costse and \ super-humeral 

 and 4 sub- humeral raised lirse ; columella long, straight, and smooth. 



Locality. — Collier's Ferry, Brazos River, Tex. 



Geological horizon. — Lower Claiborne Eocene. 



Type. — Texas State Museum. 



PL (Beta) rebeccae nov. sp. PL 5, fig. 15. 



Specific characterization. — Size and general form as shown by the 

 figure; whorls 7; 1 and 2 small, smooth, 3 finely costate longitudi- 

 nally; remaining whorls with (a) a sub-sutural raised line, (b) one 



