•903] 



Hay^ North A?tierican Cretaceous Fishes. 



85 



Having made an earnest effort to apply to the specimens 

 in this Museum the characters presented by Cope as belonging 

 to his species and such other characters as could be found, the 

 writer has been compelled to abandon the attempt to retain 

 the species founded by Cope and has found it necessary to 

 reduce them all to the one 

 having priority of description, 

 E. nepaholica. 



Dr. Loomis has furnished an 

 excellent figure of the skull of 

 this species, seen from the side, 

 and other figures of the rear of 

 the skull. A view of a well 

 preserved skull is presented here 

 (Fig. 69). The number of the 

 specimen is 2522. The squa- 

 mosal region of the left side has 

 been damaged somewhat, and 

 the drawing of this part is com- 

 pleted from another skull, No. 

 1888. On the right side a ver- 

 tebra and some other elements 

 are lodged against the skull be- 

 hind the postorbital region. As 

 both Loomis and Woodward 

 have indicated, the very large 

 frontals (Fig. 69, jr.) extend 

 close to the hinder end of the 

 skull. However, there is a 

 narrow band of bone showing 



pi or 



soc 

 pa 



Einpo nepaholica 



Fig. 6q. Etnpo nepaholica Cope. No. 

 2522. X 3. Upper view of skull, den., 

 dentarv ; eth., ethmoid ; />-., frontal ; mx., 

 maxilla; pa., parietal; pal., palatine; 

 pinx.. premaxilla ; pt.o., pterotic ; pt.or., 

 postorbital; .r. oc, supraoccipital ; sq., 

 squamosal ; z'eri., vertebra. 



behind each frontal on the upper 



surface and extending from the supraoccipital outward to 

 the epiotic process. These bands are doubtless the parietals. 

 No suture is to be observed between the parietal and the 

 epiotic, but it may have been present. The supraoccipital 

 meets the frontals, thus separating the parietals. It sends 

 on each side outward and backward a process which passes 

 behind the inner end of the parietal. There is a deep fossa 



