PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 269 
County, Nebraska; it was lying on the surface and possibly pertains to a later 
Miocene or Pliocene deposit which apparently thinly covers the lower Miocene 
section in certain places in this valley. The accompanying figures are given in 
order to show the close similarity of this species to 7. rwrestris Merriam and T. hip- 
pophagus Matthew and Cook. The only differences between the present form and 
T. hippophagus so far as comparison can be made, is the smaller size and the slightly 
slenderer jaw of T. temerarius. 
MustEripa. 
Paroligobunis (Brachypsalis) simplicidens gen. nov. 
Annals Carnegie Museum Vol. IV, pp. 44-46, 1906. 
Type: Right mandibular ramus (No. 15538, Carn. Mus. Cat. Vert. Foss.). 
Horizon: Lower Harrison beds (Miocene). 
Locality: Near Agate Spring Fossil Quarries, Sioux County, Nebraska. 
Plesiotype: Left mandibular ramus, greater portion of femur, fibula, and bones 
of fore and hind foot (No. 2389, Carn. Mus. Cat. Vert. Foss.). 
Horizon: Lower Harrison beds (Miocene). 
Locality : Agate Spring Fossil Quarries (quarry No. 3), Sioux County, Nebraska. 
Generic Characters. — Dentition, siax. Canine heavy and oblong in cross-section. 
Premolars crowded, heavy, rather bluntly crowned, no accessory posterior cusps except on 
pz. Carnassial comparatively large, approaching condition in recent forms (Gulo), but 
possesses a small entoconid which is located high up on the crown. Ms much reduced in 
size. Femur longer than the tibia in the same proportion to that in Meles or Gulo. Feet 
broad and short; pes sub-plantigrade; wnguals not retractile. 
GENERAL DescrIPrioN oF THE PLESIOTYPE AND SPECIFIC CHARACTERS. 
The lower jaw is only very slightly larger than that in the type of this species 
previously described and is much larger than Meles taxus. The mandible below pg 
is very deep and the posterior mental foramen is located directly below the posterior 
fang of ps. Judging from the bottom of the alveolus for the canine, that tooth was 
strongly developed and the premolars appear to have been crowded, as in the type. 
The inferior border of the horizontal ramus is gently convex in the fore-and-aft 
direction, as in the type. Opposite the vertical ramus the inferior border is only 
slightly raised as in Gulo lwscus and unlike that in Meles, in which the angle 
is higher. The posterior portion of the lower jaw as a whole is otherwise very 
like that of the latter genera; possessing a large and deep temporal fossa, a large 
"4 Matthew, W. D., and Cook, Harold J., Bull. Amer. Mus. Nat. Hist., Vol. XXVI, p. 373, 1909. 
