Naturalist. ' [January, 



number 10,647, consisting of a fairly well preserved skull and mandi- 

 ble together with a humerus and portions of other limb bones. The 

 skull is relatively large compared with the skeleton. The limb bones 

 are rugose and have stout shafts, being very similar to those of Dinictis 

 fortis, 1 and are thus very different from those of H. primaevas. Denti- 

 tition : I !, C |, Pm £> M j. 



Length of skull, condyles to premaxillary border . 180 mm. 



Length of humerus 170 " 



Length of ulna 163 " 



Length of radius 132 " 



Length of femur . 195 " 



Length of tibia 160 " 



Length of pelvis 180 " 



Hoplophoneus oreodontis Cope. 



This species is Cope's type of the genus. I introduce it here for the 

 purpose of mentioning a complete skull in the Princeton Museum 

 (number 10,515) which supplements the original type and is, therefore, 

 used here for comparison. The approximate lengths of the femur and 

 tibia are based upon the lengths of these bones associated with the type 

 skull, the epiphyses being lost. Dentition : 1 |, C \ Pm ~, M \. 



Length of skull, condyles to premaxillary border, ap- 

 proximately : 135 mm. 



Approximate length of femur 1 20 " 



x\pproximate length of tibia 110 " 



Hoplophoneus eerebralis Cope. 



This species from the John Day is the smallest of the genus and at 

 the sametime the most peculiar. Cope has pointed out its specific 

 characters as follows : Space for the temporal muscle relatively short ; 

 brain capacity large ; profile of the face very convex ; sagittal crest 

 horizontal ; occiput vertical ; no paroccipital processes ; orbit vertically 



1 In ray description of D. /<»■//,, American Naturalist, June, 1*9"), I compared 

 the skeleton with that of H. occidental™, following the description of that species 

 as given by Wortman and Osborn, which the foregoing determination of its 

 skeletal characters shows to be incorrect. D. bombifronsyrhich I described at that 

 time I now find to be a synonym of D. fortis ; the skull described being cor- 

 related with the -kelet. ,n and portion of a skull of D. fori is by means of specimen 

 number 1400 of the American Museum. 



