﻿Notes on Tertiary Fossils, Rare, or Little Known. 153 



the upper part, smooth in the central part and plicate below ; outer 

 lip, reflected, plicate on the inner edge above and below, smooth 

 in the center ; canal, narrow, strongly twisted. Length i-^- ; 

 breadth, 



Locality, Red Bluff, Miss. 



This species differs from C. carinata Lam, in having a single, 

 strong varix. It is lighter in substance. I describe it with reluc- 

 tance, basing its specific difference principally upon the presence of 

 the strong varix. 



Cassidakia dubia, n. sp. PI. 3, fig. 21. Shell, ovate; whorls, 

 six to seven ; sculptured the same as C. carinata Lam ; nodes, 

 sharp, longitudinal, situated on the shoulder of the body whorl ; 

 suture, channeled ; whorls of the spire with a circle of nodes, sub- 

 central ; outer lip, toothed above and plicate on the whole of the 

 inner edge ; inner lip, strongly plicate-costate, its entire length ; 

 toothed above. Length, about one inch ; breadth, y 7 ^. 



Locality, Headwaters of Bashia Creek, Clark County, Ala., near 

 Wood's Bluff. 



Differs from all other species mentioned in the plications of the 

 aperture. Prof. A. Heilprin (Proc, Acad. Nat. Sciences, 1880, p. 

 365), in his list'of fossils from Cave Branch, mentions a "Cassidaria 

 (fragment), closely allied to C. carinata Lam," which is no doubt 

 the species above described. 



NOTES ON TERTIARY FOSSILS, RARE, OR LITTLE 



KNO WN 



By T. H. Aldrich. 



Scalaria octolineata Con., PI. 3, fig. 22. This species was de- 

 scribed by Conrad in Jour. Acad. Nat. Sc., 2dSer., Vol. 4, p. 294, 

 but seems never to have been figured ; his description is as follows: 



"Turrited, whorls longitudinally costate ; ribs, distant, very 

 prominent, laminar; revolving lines, distant, prominent, continued 

 over the right side of each varix, the other side rugose ; varices, very 

 prominent ; base with a carina. Length about 1 y 2 inches. 



