233 Midway Stage 119 



groove across the labium at about the horizon of the upper 

 margin of the umbilicus. 



Mr. Stanton of the U. S. National Museum has sent us a fine 

 set of A^. rectilabr^wi Con. from the upper Cretaceous. They are 

 far more elongate and F2"z'z)!>ara-shaped than saffordia. 



Locality. — TENNESSEE: 2 mi. E. of Middleton. 



Type. — Dr. Safford's collection. 



Natica reversa, PI. 12, fig. 19. 



Syn. N. reversa Whitf. , Am. Jr. Conch., i, 1865, p. 264. 



Whitfield^ s original description. — "Shell small, globose; spire 

 moderately elevated; volutions ventricose; suture deep; aperture 

 semicircular, and moderately large, equaling two-thirds the 

 length of the shell; outer lip sharp; inner lip slightly thickened, 

 spreading over the preceding volution; callus represented by a 

 thickened spiral ridge, deposited on the left side of the umbili- 

 cus, and uniting with the peristome at the inner basal angle; 

 substance of the shell thick; surface polished. 



''Dimensions. — Height .3 inch. 



''Locality. — Nine miles below Prairie Bluff, Ala." 



Localities. — Alabama: Matthews' Landing; i mi. W. of Oak 

 Hill. 



Type. — Hall collection. 



Natica eminnla, PI. 12, fig. 20. 



Syn. N. eminula Con., Foss. Sh. Tert. Form., 1833, p. 46. 

 A^. pa7'va and minor of Lea's Contributions, etc. 



Conrad'' s original description. — "Obovate, with smooth convex 

 volutions and a prominent conical spire; umbilicus elliptical, not 

 contracted by the callus; aperture obovate, rather more than half 

 the length of the shell." 



This was described from the Claiborne sand. 



Localities (Midway). — Alabama: Naheola; Matthews' Land- 

 ing; I mi. W. of Oak Hill P. O. 

 Type.— Ac. Nat. Sci., Phila. 



Natica perspecta, PI. 12, fig. 21. 



Syn. N. perspecta Whitf., Am. Jr. Conch., i, 1865, p. 264. 



Whitfield's original description. — "Shell oblique, of medium 

 size; substance thick; volutions four in the largest individuals, 

 very ventricose; spire low; suture very distinctlj^ channelled; 



