Geological Survey of Alabama. 39 



ASTARTE CONRADI, Dana, sp. PL 4, fig. 7. 



Shell thin, oblong-ovate, concentrically wrinkled with broad, rounded 

 plaits, concavities between nearly smooth. Covering the whole surface 

 are fine, concentric lines, stronger on top of the plications; beaks flat- 

 tened, blunt, and turned toward the anterior; lunule heart-shaped, sep- 

 arated by an indistinct ridge ; hinge line nearly straight. 



Localities. Lisbon, Coffeeville, and beds at base of Claiborne Bluff, 

 Ala. 



The dentition removes this species to Lwtraria. Prof. Marsh, at the 

 request of Prof. J. D. Dana, has kindly allowed me to examine the type 

 specimens. The one figured by Prof. Dana has been considerably dis- 

 torted by pressure, and therefore misled Prof. Heilprin, who considered 

 it a young Crassatella alta, Con. I figure the normal form. Ranges from 

 the calcareous sand-bed down to the Buhrstone. The largest specimen 

 found measures nearly two inches in length. Very close to L. lapidosa, 

 Con. 



CYTHEREA HATCHETIGBEENSIS, n. sp. PL 4, fig. 1. 



Shell rather thick, inflated, subrotund, transversely striate the differ- 

 ent periods of growth marked by a dropping down of the concentric lamina, 

 giving a ridge-like appearance ; uinbones swollen ; beaks elevated ; lateral 

 tooth in left valve transverse, conical and strong ; ligament short-curved ; 

 excavation of the pallial impression angular ; margin of the shell entire, 

 thickened in some specimens. 



Locality. Hatchetigbee Bluff, Ala., beneath the Buhrstone. 



Prof. A. Heilprin considers this shell as C. discoidalis, Con., but that 

 is described as having the inner margin crenulate, while this is smooth. 

 Conrad's species has never been figured. 



CARDIUM HATCHETIGBEENSE, n. sp. PL 4, figs. 12, 12a, I2b. 



Shell large, subquadrate, ventricose with about thirty-two ribs; ribs 

 flattened oval, with the scars of spines visible along their center, a few 

 coarse, flattened, triangular spines remaining on the posterior and anterior ; 

 largest on the posterior, which is subtruncate, the largest rib forming the 

 angle ; marginal serrature largest at the angle. The flattened spaces 

 between the ribs are equal in width to the ribs and nearly smooth, show- 

 ing faintly the lines of growth. Cardinal teeth in left valve double the 

 lower one the largest, very strong and erect. 



Locality. Hatchetigbee Bluff, Ala. 



