Cope. ] 356 [Jan. 5, 
the fang instead of the processes of the last species. The external parts 
of the cutting edge rise slowly from the base, and then rise more steeply 
at an obtuse angle. They are convex on each side above, and meet sym- 
metrically, forming a little less than a right angle. No denticles ; ce- 
mentum smooth. Edge everywhere denticulate. One side of crown 
plane, the other convex. 
M. 
Henpiltbasis Pow), £0. ose end disoc BEER PPAVARI HOODS 
= Pan gs4s, 2s, PEI OdO ABC) S37 0K 49 EGE MUNRO . 0495 
Elevation of apex (from concavity)... 0.0... oe, 0145 
Width crown at contraction. .... POUQIOE HEA owe GAL, DIOLD 
This tooth is stouter and larger than that of G. edgertondi, and was 
found beneath the bones of the Protostegu gigas. Itis named after Martin 
Y. Hartwell, a member of my expedition, to whose acuteness and industry 
I owe many specimens. 
GENERAL OBSERVATIONS. 
The following species have now been described from the cretaceous 
formation of Kansas : 
SAURODONTID a. 
Portheus molossus. Cope. 
Portheus thaumas. Cope. 
Ichthyodectes unaides. Cope. 
Ichthyodectes ctenodon. Cope. 
Ichthyodectes hamatus. Cope. 
Ichthyodectes prognathus. Cope. 
Ichthyodectes multidentatus. Cope. 
(?) Xiphactinus audax. Leidy. 
Saurocephalus phlebotomus. Cope. 
Saurocephalus arapuhovius. Cope. 
PACHYRHIZODONTID A. 
Puchyrhizodus caninus. Cope. 
Puachyrhizodus kingit. Cope. 
Pachyrhizodus latimentum. Cope. 
Pachyrhizodus sheareri. Cope. 
Eimpo nepuhollica. Cope. 
STRATODONTID A, 
Stratodus apicalis. Cope. 
Cimolichthys sulcatus. Cope. 
Cimolichthys semianceps. Cope. 
Cimolichthys anceps. Cope. 
Cimolichthys gladiolus, Cope. 
Cimolichthys (2) carinatus. Cope. 
Hnchodus calliodon. Cope. 
