OF NEW TERTIARY FOSSILS. 129 



C. suBROTUNDA. PL 14, fig. 11. — Orbiculaf, inequilateral, ventricose, with about twenty-eight rounded 

 prominent narrow radii ; ligament margin very oblique, short ; ends obtusely rounded ; inner margin 

 slightly crenulated. Length 3. Height §. 



TURBO. 



T. BiLiRATUS. — Turbinate ; volutions four, flattened above ; body whorl with two distant revolving carinated 

 lines, and intermediate fine revolving lines ; volutions of the spire with a carinated line below the 

 middle. Length §. Width §. 



CERITHIUM. 



C. BicosTELLATUM. — Turreted ; volutions eight or nine, angular and carinated below the middle ; body 

 whorl bicarinated. Length |. 



C. siLicEUM. PI. 14, fig. 1. — Turreted; whorls rounded below, contracted or concave above, and witli 

 revolving lines ; suture profound. A fragment. Width f. 



INFUNDIBULUM. 



I. CARiNATUM. PI. 14, fig. 6. — Depressed, with a suddenly elevated acutely conical spire, and a carinated 

 line revolving at the suture. Length of fragment |. 



TELLINA. 



T. suBEQUALis. PI. 14, fig. 8. — Somewhat elliptical, nearly equilateral ; posterior end acutely rounded ; 

 anterior slightly bent, end rounded. (A cast.) Length 1|. Width |. 



MADREPORA. 



M. PUNCTULATA. Cylindrical, ramose, with prominent cells ; whole surface ornamented with fine, equal, 

 punctate, impressed lines. Diameter j. 



Locality/. St. Matthew's Parish, Orangeburg, South Carolina. Vanuxem. 



A species highly ornamented by the punctate vermicular lines. It occurs much 

 larger than the specimen described. 



All the preceding fossils are from the Eocene rocks of St. Matthew's Parish, 

 Orangeburg District, South Carolina. Not one species of this locality is known in 

 the lower Eocene of Claiborne or elsewhere, nor in the upper Eocene of Vicksburg 

 and therefore the relative age of the deposit is uncertain, but it unquestionably 

 belongs to the Eocene period. Near this rock Mr. Vanuxem found quite a different 

 class of shells, consisting of casts in indurated clay. The relative position is 

 undetermined. Two of the shells are described and named Tellina suhequalis and 

 Lutraria petrosa. 



In Vanuxem's collection there is a cast, from the Eocene near Long Branch, New- 

 Jersey, resembling Nautilus zig-zag, (Sow.) It is more compressed than that 

 species, and the angles of the septa appear to be in contact near the periphery. It is 

 more like a Goniatite than a Nautilus, and belongs to Montfort's genus 



