1877.] 53 (Cope. 
especially such species as the one figured by T. P. Barkas in the Atlas of 
his Manual of Coal Measure Paleontology PI. I figs. 35-7 (Manual p. 20). 
From the latter it differs in the transverse instead of continuous relation of 
the edge and root to the main body of the tooth ; the root does not appear 
to be differentiated at all in Climazxodus, while it is distinctly marked in 
Strigilina. 
Char. Specif. The plicate surface terminates behind ina median angle, at 
the base of the root. There are eight plicze which allcross the plane, except- 
ing the sixth, which is interrupted in the middle by the strong angulation 
of the seventh, which touches the fifth. The lateral extremities of the 
right are in contact with the base of the recurved cutting portion. The 
latter is convex transversely, leaving a smooth surface between it and the 
eighth plica. The smooth side of the tooth is shining, and there is a 
shallow fold which passes round its side and crosses just at the base of the 
recurved cutting lamina. The edge of the lamina is unfortunately broken. 
M 
PROtAlpleMc thors planes... nccset-see es escet occas stascaderses onesie ce .008 
Width ate base of cuttinio: JaMINay. jin..4..0c.sceoccnecoseo ener oe .006 
AVE reLE DASE LOL OM. 1 crews cess coreedsssscdleeNddeteid anlndseosad be 004 
HUCK MN ESStOME DIAM EH MP ONGIOM. cescieoce cased ecsescen-scadecssoces: 0015 
This species was found by William Gurley. 
SELACHII. 
DiPLopus ?coMPREssUS Newberry. 
A few teeth of Diplodus found, are none of them perfectly preserved. 
One with a lateral and median denticles nearly complete, agrees pretty 
well with the species cited. 
DIPNOT. 
CERATODUS VINSLOVII Cope Proceed. Acad. Philada. 1876, p. 410. 
CERATODUS PAUCICRISTATUS Cope, sp. nov. 
The single tooth representing this species is narrow in the transverse 
direction, but stout in vertical diameter. But four ridges are present, all 
of which have a single direction, but the shorter ones are the less oblique 
to the long axis of the tooth. They all extend into the inner border, but 
become low as they approach it. Distally they are quite prominent, but 
do not project very far beyond the emarginate border between them. The 
inner border is plane and vertical, and without ledge ; the inferior surface 
is concave in the transverse direction. The surface of the tooth is minutely 
and elegantly corrugated. 
ihenoth from base Of SECON LID. -.2..0c0<.s+ccasessccseceesceee .0170 
Ment heateoase Of SCCONC TID s..ocscaccictaasccetacescccerseeatsees 0045 
From the collection of Dr. J. C. Winslow. 
CTENODUS FOSSATUS Cope, sp. nov. 
Represented by a nearly perfect tooth of a general narrow and vertically 
thickened form. There are five crests, the largest three extended in one 
