LAMELLIBEAlSrCHIATA OF THE LOWER MARLS. 173 



observed. Mr. Conrad at first supposed it to be a Protocardium, but subse- 

 quently made it the type of his new genus, Veleda, The hinge features on 

 the specimens which I have before me are ver}^ imperfect, although I am 

 inclined to think they furnished the material for his generic diagnosis. He 

 describes them as follows : ^^Equivalved. Hinge character; left valve with 

 a V-shaped cardinal tooth under the apex, and three compressed teeth, pos- 

 terior one elongated and parallel with the dorsal margin, cardinal plate 

 channeled, deeply so anteriorly." I have drawn the features of the hinge 

 as near as practicable, enlarged, from the best individual of the two, just as 

 it was prepared by Mr. Conrad, and shall offer no comments as to the value 

 of his genus. Among some imperfect casts which I have referred to the 

 same genus there is one which shows the cardinal margin to have been 

 strongly grooved in front and behind, and on one, which is of a right valve, 

 the posterior side shows two ridges, representing a double groove on that 

 side, the outer one the smallest of the two. 



Mr. Gabb (loc. cite.) says there is no difference between this species and 

 the typical form of his genus CymhopJiora, described in the Paleontology of 

 California, except that of size and the peculiar cross-striations of the lateral 

 teeth, the latter feature not having been observed in the California speci- 

 mens. As there would appear to have been some doubt in his own 

 mind as to their absolute identity, and as his observations were made on 

 specimens identified from Georgia, I think it best to leave it as Mr. Conrad 

 placed it until more positive information is obtained. 



Formation and locality, — Mr. Conrad's original type of the species was 

 from Tippah County, Miss., Dr. Toumey's collection, while his generic 

 types are marked Haddonfield, New Jersey. The internal casts mentioned 

 under the remarks above are from the micaceous clays beneath the Lower 

 Marls, at the Rev. G. C. Schank's pits near Marlborough; New Jersey State 

 cabinet. 



Veleda Tellinoides, n. sp. 

 Plate XXIII, Fig. 23. 



Shell large for the genus, the cast, the only form under which it is 

 known, being fully one and a quarter inches in length; form transversely 

 ovate, largest at the anterior end, and two-thirds as high as long. Valves 



