PETERSON: A REVISION OF THE ENTELODONTIDAG 61 
Subgenus (?) BOOCHGERUS Cope. 
Bodcherus humerosus Cope. 
Type: A portion of a skeleton without the skull or teeth. 
Horizon: (Upper?) John Day For- 
mation. 
Locality: John Day River, Oregon. 
Locality of Type: The American Mu- 
seum of Natural History, Cope Collection, 
No. 7880. 
The genus Bodchwrus was proposed by 
Cope and the type was fully described in 
1879 (10, pp. 59-66). This John Day 
form has been regarded as belonging to 
Archexotherium by authors who have ocea- 
sionally referred to it, and it is even now 
difficult. to correctly place the remains 
generically, as there are unfortunately no 
remains of the skull or teeth with the type. 
The present arrangement must, therefore, 
be regarded as only provisional, pending 
the discovery of more material in the typi- 
cal locality. 
After restudying the type, and after 
comparing it with the splendid skeleton of 
Dinohyus hollandi from the Agate Spring 
Fossil Quarries, as well as with the Prince- 
ton specimen of Archexotheriwm ingens from 
the Titanotherium beds,. which was de- 
scribed by Professor Scott, it appears that 
there are certain characters of generic 
value. When the skeleton of Dxodon is 
thoroughly known, Bodchwrus may pos- 
sibly have to be referred to that genus. 
Principal. characters of Bobcherus hu- 
Fia. 15. Front and Inside View of Right Forefoot of 
B. humerosus Cope. About } nat.size. (Cope Collection, 
No. 7380.) 
merosus: On comparing Bodchwrus humerosus with Dinohyus hollandi it is quite ap- 
parent that the humerus in the former is relatively long and the manus” broad 
2 Although B. humerosus is heavier than D. hollandi, the feet of the former are considerably shorter and broader 
than in the latter. 
