﻿278 CONRAD'S DESCRIPTIONS OF 



Subgenus TELLINIMERA, Conrad. 



T. (Tellinimera) limatula. PI. 46, fig. 10. Thin, polished, rather elongated ; right 

 valve with three cardinal teeth, the shortest one extending to the apex. No lateral 

 tooth ; posterior cardinal plate obliquely salient, acute. 



The hinge of the right valve only has been observed. 



T. (Tellinimeea) eborea. PL 46, fig. 14. Equilateral, subtriangular, compressed; 

 reflexed posteriorly, end subangulated ; anterior end rounded ; disc with concentric, 

 regular, slightly impressed lines ; substance very thin ; anterior cardinal tooth slightly 

 oblique, the posterior one very oblique. 



Locality. — Alabama. Mr. Tuomey's collection. 



DOSINIA, Scopoli. 



Dosinia depressa. PL 46, fig. 6. Longitudinally suboval, convex-depressed, 

 inequilateral; dorsal margin somewhat arcuated, subangular at the posterior ex- 

 tremity ; umbo flattened ; beak not prominent ; disk smooth or with a few distant 

 furrows ; umbo minutely and elegantly striated concentrically ; length considerably 

 more than the height. 



Locality. — Eufaula, Alabama. Tuomey's collection. 



A young specimen, very thin and flattened, shows a somewhat greater proportional 

 length than the adult, and the concentric lines are only visible near the apex. In 

 the former they extend over about one-fourth of the disk. 



Dosinia obliquata. PL 46, fig. 2. Lentiform, very oblique ; beaks almost terminal ; 

 minute, concentric, regular, closely arranged, impressed lines on the anterior side. 

 Locality. — Tippah Co., Mississippi. Dr. Spillman. 



MYSIA, Leach. 



Mysia parilis. PL 46, fig. 8. Shell suborbicular, equilateral, ventricose, direct; 

 surface entire ; hinge with the anterior cardinal channel very profound. 

 Locality. — Tippah Co., Mississippi. Dr. Spillman. 



CAKDIUM. 



Subgenus PROTOCARDIA. 



C. (protocardia) linteum. PL 46, fig. 17. Triangular, slightly ventricose, subequi- 

 lateral ; suddenly contracted before the umbonal slope, which is defined by a cari- 

 nated line ; posterior extremity truncated and slightly oblique ; basal margin rounded ; 

 disk covered with minute, closely arranged, regular lines, terminating at the raised 

 line on the umbo. 



