ii8 Bulletin 4 332 



Alabama: iJ/s mi. N. E. of Cla3^ton. 



Tj'pe. — Paleontological Museum, Cornell University. Speci- 

 men figured, from Ft. Gaines. 



Natica Ihmda, PI. 12, fig. 16. 



Syn. N. Ihmda Con., Foss. Sh. Tert. Form. Am., Nov., 1833, 



p. 46. 

 N. gibbosa Lea, Cont. to Geol., Dec, 1833, p. 108, pl. 4, 



fig. 92. 

 N. [Neverita) mam-ma De Greg., partiin, Mon. Faun. 



Hoc. Ala., 1890, p. 152. 



Conrad's original description. — "Obliquely suboval, smooth, 

 with a short convex spire; umbilicus nearly closed by a profound 

 callus; aperture elliptical." 



The specimen so described was from the Claiborne sand and is 

 now in the collection of the Ac. Nat. Sci. , Phila. 



The specimen herewith figured is from Matthews' Landing 

 and belongs to the Chamberlain-Lea collection at the Ac. Nat. 

 Sci., Phila. We are not aware that the species has been record- 

 ed before from so low a horizon. 



Natica {Poli^iices) omtsta, PI. 12, fig. 17. 



Syn. N. (P.) onusta Whitf., Am. Jr. Conch., i, 1865, p. 264. 



Whitfield' s original description. — "Shell obliquely elliptical; 

 spire low, a very small portion only of the inner volutions show- 

 ing; volutions flattened in the upper part, and abruptly rounded 

 below; suture slightly channelled; aperture very large, obliquely 

 semilunate; callus very large, entirely filling the umbilical por- 

 tion of the shell; surface smooth, or marked only \yy fine lines of 

 growth. 



''Locality. — Six miles below Prairie Bluff, Alabama." 



Type. — Hall collection. 

 Natica saffordia n. sp. , PI. 12, fig. 18. 



Syn. N. rectilabriim Gabb and Safford non Con., Geol. Tenn., 

 Safford, 1869, p. 419. 



Specific characterization. — Size and form about as figured though 

 there is a slight tendency towards a humeral zone just below 

 the suture, somewhat as in alabamiensis though far less marked; 

 whorls from four to five; umbilicus small, nearly closed by the 

 thickening of the labium. In young specimens, as in many 

 species of the genus, there is a trace of a notch or transverse' 



