GASTLROPODA OF THE EUCENE MARLS. - rp 
CONID. 
Genus CONUS Linnzus. 
CONUS SUBSAURIDEUS. 
Plate xxxIv, Figs. 16, 17. 
Conus subsaurideus Conrad: Am. Jour. Conch., vol. 1, p. 148, Pl. m1, Fig. 9; ibid., 
p. 30. 
Casts of a species of cone, always of small size and with a rather ele- 
vated spire, are in the collections in use. They present the appearance, as 
nearly as casts can, of shells of the above species, obtained from the Buhr- 
stone beds of the Eocene, from near Orangeburg, South Carolina, which I 
have identified with Conrad’s species. The shells are usually small and 
of medium conical form, the spire is more or less elevated, with an elevated 
carina on the outer edge of each volution, and the intermediate surface 
spirally striated. The elevation of the spire varies in different individuals 
from 90° to 120° or more. The shells are all silicified and are from the 
collection at Am. Mus. Nat. Hist., among those obtained from Dr. Holmes, of 
Charleston, South Carolina. The New Jersey casts have the same general 
shape, the volutions of the spire being exsert and the apical angle 90° or 
more. None of the matrices have been preserved, so that the carinate 
character and striations of the surface are not known; still there ean be 
no reasonable doubt of the specific identity of these casts with the silicified 
shells above mentioned. Mr. Conrad says under his description that the 
shell he used is silicified, and is “from the Buhrstone, probably, of Ala- 
bama.” So it would appear that he did not know the locality, and I 
have no doubt the specimen which he used was from the same locality 
as those in the Holmes collection, namely, near Orangeburg, South Car- 
olina. Casts resembling these, but of much greater size, also occur in 
Marls of the Eocene, supposed to have come from some locality near 
Charleston, South Carolina, and also from the lower bed at Claiborne, 
Alabama. These I have identified without question as casts of the above 
species, after making internal casts artificially from authentic specimens of 
C. subsauridens, 
