268 [Sept. 1847. 



heavy. I have six specimens from the Miocene, and three from the Eocene 

 of South Carolina. 



5. Oxyrhina SillimanL Among twelve specimens from the Eocene, there 

 is much uniformity in this species. The cone is straight or very slightly 

 bowed on the inner surface, equilateral, acutely pointed, both surfaces convex, 

 the inner much more so. A peculiarity exists in the great breadth of the 

 enamel at the base, which is similar on both aspects. The root is thick, and 

 forms one-third of the height of the tooth. 



I attach to it the name of Prof. B. Silliman, the veteran co- laborer in 

 American Science. 



(5. Otodus levis. This has very much the form of Lamna cuspida'a, but the 

 position, form and size of the lateral winglets mark it as a true Otodus. It is 

 more slender than any other of this genus, lanciform, equilateral, straight, 

 convex on the inner face, and undulated on the outer from a triangular 

 depression near the base extending longitudinally nearly to the apex. The 

 lateral cones are broad and thick, and detached from the base of the enamel 

 which extends lower on the outer face than on the inner. I have a single 

 specimen from the Eocene, S. C. 



7. Glyphis subulata. The cone is shorter and thicker proportionally than 

 in G. hastalis, Agassiz, and is more straight, convex on both surfaces, 

 more so on the inner ; the upper third of the outer face is fiat, and the point 

 has a tendency outward. A sharp lateral edge extends from the apex equally 

 on both sides two-thirds of the length of the cone, and is uniformly indented. 

 The root is thick, the enamel extends lower on the outer face and to the 

 root on both. In one specimen the root is very broad, and the enamelled 

 base equally so. 



I have only two specimens from the Eocene, S. C. 



I have in preparation full descriptions of all the genera and species of 

 Squalides from the Tertiary of South Carolina, which will be published with 

 figures in a future number of the Journal of the Academy. I have in my 

 collection eight genera and thirty-nine species. I have had the privilege and 

 pleasure of submitting them to the inspection of our distinguished visitor, 

 Prof. Agassiz, who has kindly and liberally given me much information as to 

 their character and arrangement, the result of his extensive experience. 



A communication was read from Mr. Moss, dated Sept. 28th, 

 1847, tendering his resignation as Recording Secretary, in 

 consequence of his removal from the city ; which was accepted, 

 and the following resolution unanimously adopted : 



Resolved, That the Academy receives with regret the resigna- 

 tion of Mr. Theodore F. Moss, as Recording Secretary, and 



