NATURAL SCIENCES OF PHILADELPHIA. 339 



DAPTINUS, Cope, gen. nov. 



This genus is proposed for the Samoce2:)halusphlebotomus, Cope. 



The form of the crowns of the teeth is that of Samoceph.alus and 

 Ei'isichthe, but it difters from the latter in their perfect equality of 

 size. It differs from the former in the position of the nutritious 

 foramina of the inner side of the dentary bone, for instead of form- 

 ing an independent series as in that genus, the}^ only appear as 

 notches on the inner margins of the alveoli. But one species is 

 known as above, which is from the Niobrara cretaceous of Kansas. 



