368 University of Kansas Geological Survey. 



no descending process of the parietals ; no claws ; limbs paddle- 

 shaped. Bony carapace dissolved into numerous mosaic-like 

 pieces. Dermochelys. 



Of course a more perfect knowledge of Desmatochelys may ne- 

 cessitate a further revision of the different group characters. 



CYNOCERCUS. 



Cynocercus Cope, Proc. Amer. Phil. Soc. 1872, 308; Cret. Vert., 96, 1875. 



Nothing further is known concerning this genus than what 

 is given by the author of it. There is no material in the Uni- 

 versity of Kansas which can be with certainty referred to it. 

 I therefore reproduce the original figures by Cope and give the 

 most essential portion of his description. 



"Established on a metapodial bone and caudal vertebrae of a 

 tortoise of uncertain, but in any case peculiar, affinities. The 

 caudal vertebrae are not anterior ones, almost lacking diapophy- 

 ses, but are long and slender, and the articular faces singu- 

 larly incised. The form had a tail more elongate than the 

 snapping turtle, and different from it in details of composition, 

 especially in being of a procoelian type." 



Cynocercus incisus. 

 Cynocercus incisus Cope, 1. c, pi. viii, fif. 3-5. 



"The centrum is elongate and depressed. The inferior sur- 

 face at the cup is flat; it is then arched upward, descending 

 again to the rim of the ball. The posterior two-thirds has a 

 median groove, which terminates in a deep notch of the ball, 

 which involves one-third of its vertical diameter, and widens 

 backward. The ball is transverse oval, and only moderately 

 convex; near its upper margin a small, deep pit interrupts its 

 surface, having the appearance of an unusually large ligamen- 

 tous insertion ; its border lightly excavates the border of the 

 ball. The cup is transverse oval, wider below. Its inferior 

 and superior margins are so deeply ( but openly ) emarginate 

 as to reduce the concavity in the vertical direction^very much. 



