1895.] NATURAL, SCIENCES OF PHILADELPHIA. 75 



5, 6, 7 with about three coarse revolving raised lines, with obtuse 

 regular longitudinal costae; body whorl with regular strong raised 

 lines on its larger portion and finer ones below, also with seven 

 obtuse costse over which the spiral lines pass ; labrum with five or 

 six crenulations within ; a basal Nassa-like fold on the columella. 



In a general way this species resembles M. vanuxemi Con., but the 

 costse are very different and show no signs of forming acute angles, 

 folds or spines. 



Locality. Smithville, Bastrop Co. , Tex. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



Subgenus ODONTOPOLYS. 

 M. (Odontopolys) compsorhytis Gabb. PI. 8, fig. 6. 



M. ( Odont. ) compsorhytis Gabb, Jour. Ac. Nat. Sci. Phila., vol. 4, 1860, p. 377, 



pi. 67, fig. 16. 

 Murex sp.? Harris, La. Exp. Sta., Eept. on Hills of La., pt. 1, 1892, p. 29. 



According to Gabb the type of this species came from Wheelock, 

 Tex., and was deposited in the collections of the Smithsonian Insti- 

 tution. Unfortunately it has been lost. The State Survey's collec- 

 tion has yielded no specimens of this species, but in the U. S. National 

 Museum there is a specimen collected by T. Wayland Vaughan, from 

 Hammett's branch, 2 miles east of Mt. Lebanon, Bienville Parish, 

 La. This is herewith figured. 



Gabb's figure of this species is very poor, while his description is 

 good. His figure has been copied in Tryon's Structural and Syste- 

 matic Conchology, vol. 2, 1883, pi. 43, fig. 4, and this in turn is 

 copied in De Gregorio's Monograph Faun. Eoc. Ala., pi. 6, fig. 47. 



Meyer's Odontopolys triplicata, Sonder-Abdruck aus "Bericht iiber 

 die Senkeubergische Gesellschaft in Frankfurt a. M.," 1887, p. 7, 

 pi. 1, fig. 6, is a Volute, perhaps the young of V. petrosus. 



Genus PSEUDOLIVA. 

 Pseudoliva ostrarupis nov. sp. PL 8, fig. 3. a. 



Specific characterization. Size and general form as figured ; volu- 

 tions 6, spiral whorls shouldered and somewhat costate ; suture ob- 

 scured by folise developed by the intermittent mode of growth of the 

 sutural callosity; body whorl below scarcely distinguishable from 

 the non-umbiiicate varieties of Ps. vetusta, while above, the shoulder 

 and the sutural folise at once definitely characterize the species. 



