1895.] NATURAL SCIENCES OF PHILADELPHIA. 57 



Figured specimen. — -Texas State Museum. 



Type. — Probably the specimen in the Academy's collection. 



PI. (Surcula) moorei Gabb. PI. 4, fig. 6, a, b. 



Turris moorei Gabb, Jour. Ac. Nat. Sci. Phila.. vol. 4, 1860, p. 378, pi. 67, 



fig. 11 (not fig. 9 as stated in Gabb's text). 

 Pleurotoma tuomeyi Aldrich, Bull. Geol. Surv. Ala., No. 1, 1886, p. 31, pi. 3, 



fig. 11. 

 Pleurotoma tuomeyi Heilprin, Proc. Ac. Nat. Sci. Phila., 1890, p. 394. 

 Surcula moorei Heilp., Proc. Ac. Nat. Sci. Phila., 1890, p. 394. 



This species shows considerable variation in form as indicated by 

 figs. 6, 6a, 6b. The specimen in the collection of the Academy is 

 of about the form and size of that represented by fig. 6, though it 

 shows more prominent denticulations on the spire, approaching fig. 

 6b in this respect. Specimens of this species in the U. S. Nat. 

 Mus. collection from Wood's Bluff, Ala. , are slightly stouter in form, 

 i.e., have a shorter spire. This, however, is not always the case, 

 for Aldrich's type from this locality is of nearly the normal form. 

 The Alabama specimens all show denticulations on the upper spiral 

 stria?, a feature apparently overlooked by Aldrich when describing 

 his Tuomeyi. 



Localities. — Smith ville, Bastrop Co.; Little Brazos River, Cedar 

 Creek, Wheelock League, Robertson Co.; Mosley's Ferry, Burleson 

 Co.; Elm Creek, Lee Co.; Alabama Bluff, Trinity River, Houston 

 Co., Texas. Also from Wood's Bluff, Ala. 



Type. — Probably lost. 



Geological horizon. — Lignitic, and Lower Claiborne Eocene. 



Pleurotoma beadata nov. sp. PI. 4, fig. 7. 



Specific characterization. — General form as shown in the figure; 

 whorls 9 ; 1, 2, 3 smooth, 4, 5 transversely costate, 6, 7, 8 obliquely 

 costate, the costse most pronounced not far below the suture and 

 dying out below, evenly and coarsely striate spirally; suture bor- 

 dered below by a raised crenulated line; body whorl either costate 

 on its humeral portion or plain ; evenly striate spirally ; retral sinus 

 shallow, canal long, straight. 



Locality. — Smith ville, Bastrop Co., Tex. 



Geological horizon. — Lower Claiborne Eocene. 



Type. — Texas State Museum. 



Pleurotoma vaughani nov. sp. PI. 4, fig. 8. 



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

 figure; whorls about 11 ; 1, 2, 3 smooth and very small, 4 nodular, 

 5 



