Cope. } 210 [ Nov. 17, 
Observations on the distribution of certain Hautinet Vertebrata in North 
Carolina. 
By Epwarp D. Cork. 
(Read before the American Philosophical Society, November 17, 1871). 
Dropon L. 
Diopon antrquus, Leidy. Proc. Acad. Nat. Sci. 
Superior and inferior jaws from the Miocene. This fish was described 
from transported and much worn specimens from the Ashley River, South 
Carolina. The present specimens are unworn, and display the characters 
of the species. These are very much like those of the recent D. filamen- 
tosus. The species appears also to pertain to the horizon of the Miocene. 
Beuopon, Myr. 
Teeth of both the smooth and fluted types were found by Prof. Kerr in 
Chatham Co., N. C. The latter (8. carolinens’s, Emm.) appear also to 
oecur in Wheatley’s collection, from the Trias of Phoenixville, Penn. 
Three successive forms of the maxillary teeth of B. priscus are figured. 
THECACHAMPSA, Cope. 
THECACHAMPSA RUGOSA, Emmons. 
Polyptychodon rugosus, Emmons, Geol. Surv. N. C. 
Emmons’ figure of this species is not distinguishable from a worn ca- 
nine of a Bastlosawrus, and as such I regarded it on a former occasion. 
An examination of a specimen received from Prof. Kerr, shows that its 
affinities are Crocodilian, and its structure similar to that of Thecachamp- 
sa, Cope. It is more strongly rugose-striate than in any of the known 
species, but is approached in rugosity by Thecachampsa squankensis, 
Marsh. The range of the genus is thus extended to N. Carolina. 
Cuepsysaurus, Lea. 
Teeth of this genus are very rare, one only having been observed by Dr. 
Lea. Prof. Emmons believed that he had discovered two species in the 
Trias of North Carolina, C. pennsyloanicus and O. leaii. The greater 
part of the remains on which these were based I have shown to be Belo- 
donts, but one tooth figured by Emmons, N. ©. Geol. Surv., Pl. Y. f. 3, 
may belong to this genus. 
Prof. Kerr’s collection contains two teeth which are identical with that 
associated with the C. pennsylwanicus by Lea, one of them nearly perfect, 
the other the basal portion only. They exhibit two minutely denticulated 
cutting edges, separated by one-third of the circumference. This third is 
nearly flat, the remaining portion being very convex. One cutting edge 
extends to the base of the crown, the other occupies only the distal two- 
thirds. The section of the tooth would be round at the base were it not 
for the projection of the cutting edge. The enamel is minutely striate, 
under the glass. The base of the larger tooth measures .75 of an inch in 
diameter. The figure of Emmons leaves something to be desired, as he 
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