1895.] NATURAL, SCIENCES OF PHILADELPHIA. 77 



Genus SYRNOLA. 



Syrnola trapaquara nov. sp. PL 8, fig. 10. 



, Specific characterization. Size and general form as indicated by 

 the figure ; whorls 7 ; 1 small, sinistral ; 2-7 polished, slightly tumid, 

 with a well-marked suture ; aperture moderate, striate within ; one 

 strong plait on the columella. 



Localities. Smithville, Bastrop Co. ; Jones' farm, Hurricane 

 Bayou, Houston Co., and in Mr. Singley's collection from Mosley's 

 Ferry. 



Geological horizon. Lower Claiborne Eocene. 



Type. Texas State Museum. 



Genus PYBULA. 

 P. (Fusoficula) texana nov. sp. PI. 8, tig. 11. 



Odontopolys texana Aldr. Labelled specimens from Aldrich, now in the 



U. S. Nat. Mus. 

 Volutilithesf recta Aldr., MS. plates, pi. 2, figs. 12, 12a. 



Specific characterization. General form as indicated by the figure; 

 whorls (in a mature specimen) at least 6 ; apex obtuse; whorls 1, 2 

 smooth; 3 spirally striate in part, and in part striate and costate; 

 4 and 5 with spiral raised lines alternating in size, and with longi- 

 tudinal folds or costse, the latter occasionally becoming varicose; 

 body whorl marked by four spiral lines on the humeral region, be- 

 low by three series of spiral lines, and by about twenty rather 

 irregular longitudinal costse ; outer margin of the labrum sharp, 

 within thickened and with rather irregular crenules; columella gen- 

 erally smooth; but sometimes with two irregular swellings just below 

 the point of greatest curvature. 



This is a very strange form. The apex is very obtuse and the 

 nuclear whorls as a whole are generally deflected somewhat from the 

 axis of the adult shell. So far the species is a true Pyrula. More- 

 over the striation is that of Pyrula, but the costation is more irregu- 

 lar than in any of the known species of that genus; in fact it varies 

 from moderately fine Pyrula- like lines to strong varices. The 

 swellings on the columella, though in no wise true plaits, are worthy 

 of note. They are evidently of the same origin and nature as those 

 in Mazzalina. 



Localities. Mosley's Ferry, Brazos River, Burleson Co., Little 

 Brazos River, near iron bridge ; Cedar Creek, Lee Co. ; Dunn'i 



