26 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I3I 



clearly defined and well-separated cusps. Whether the anterior of 

 these originated by twinning or from the cingulum, or whether the 

 two cusps are actually the metaconid and metastylid, would not seem 

 to alter the picture. If subsequent material should demonstrate that 

 the Lapoint specimen is indeed of a small primitive entelodont the 

 possibility of the entelodonts having originated early in the Helohyinae 

 would not seem to be precluded. Although Peterson's specimen is 

 unlike Helohyiis in details seemingly on a generic level, the bunodont 

 form of the Lapoint molar could possibly be regarded as a modifica- 

 tion from that of Helohyus or Lophiohyiis. The interval from Bridger 

 to Lapoint time would seem entirely adequate. 



I agree with Peterson that the Lapoint specimen is probably inade- 

 quate as a type, nevertheless its possible new-born significance may 

 warrant a name, if for no other purpose than as a handle for discus- 

 sion purposes. I propose the new name Dyscritochoerus ^° lapointen- 

 sis}^ The type is the lower jaw portion described by Peterson, CM. 

 No. 11912.^2 It might tentatively be aligned with the entelodonts. If 

 Dyscritochoerus is in truth a link between the entelodonts and the 

 helohyids its position in the uppermost Eocene is reasonable and would 

 not necessarily imply an Oligocene age for the Lapoint horizon. 



AGRIOCHOERIDAE 



PROTOREODON, cf. PETERSONI Gazin, 1955 



Plate 3, figure 4 



Not more than four specimens represent a distinctly small species 

 of Protoreodon in the Badwater fauna. Three of these are isolated 

 teeth, but one, U.S.N.M. No. 21101, is a right maxilla including M^- 

 M^. The teeth correspond closely in size to those in Uinta C Pro- 

 toreodon petersoni, and, like that species, the protoconule is rather 

 weak, not so emphasized as in earlier Uinta C Protoreodon minor. 

 The molar series in No, 21101 is 20.0 mm. long. 



PROTOREODON, near P. PUMILUS (Marsh), 1875 



There are about 18 specimens of a comparatively large form of 

 Protoreodon. Most of these are isolated teeth, although a few are 

 jaw or maxillary fragments with two or three teeth, generally broken. 



^^ Dyskritos (Gr.), hard to determine or doubtful, and choiros (Gr.), pig. 

 ^1 lapointensis, from the town and horizon Lapoint. 



12 Dr. Kay informs me that he has been unable to locate this specimen in the 

 collections at the Carnegie Museum. 



