Cope ] 



132 



[May 15, 



The molar teeth of three of these genera are represented in the accom- 

 panying figures. Nos. 1 and 4 are superior molars, and Nos. 2 and 3 

 are inferior molars. Their parts are reversed in the two jaws. 



1. Bolhodon teauitectns. 2. Diadectes pltaseoUnus. 3. Diadectes bi- 

 culminatus. 4. Emju'dias fissiis. 



a. Posterior view. 

 h. End view. 



The new forms of the family are as follows : 

 Diadectes biculminatus, sp. nov. 



As this species is represented l)y a fragment of a mandilile tlic ciiar- 

 acters can be drawn from the teeth only. These are reniarkaMe for 



