PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 215 
tion to that in the recent forms. One of the more curious features of the bone is 
the deep and obliquely placed sulcus, which separates the groove for the flexor 
muscles from the astragalar trochlea. In this groove is located the astragalar fora- 
men (see fig. 68, 2), which pierces the bone and again appears in the groove be- 
tween the internal and external facets for the caleaneum on the plantar face, as in 
Meles taxus. The neck is perhaps somewhat longer than in Megalictis, which again 
reveals a tendency towards Gulo luscus. The head is also expanded and convex 
in the same way. 
A mesocuneiform which was found with the specimen and very likely belongs 
with it, is high and narrow when compared with Meles, and is apparently also 
slightly higher in proportion to that of Megalictis, but is otherwise quite like that of 
the latter, the tibial face possessing a large facet for the entocuneiform. 
MEASUREMENTS. 
Femur, antero-posterior diameter of distal end. 
Fibula, greatest length 
Astragalus; greatest len pthins ccc ticeey ctor see atedeee ocaa snes cae asuwts vse sele eas lee oaee RNa ee 
Astragalus, greatest transverse diameter 
Astragalus, greatest transverse diameter of trochlea .. 
Mesocuneiform, greatest antero-posterior diameter 11 
Mesocuneiform, greatest transverse diameter.. 6 
Mesocuneiform, greatest vertical diameter.. 8 
Arrinity AND Systematic Posrrion or Paroligobunis. 
While some features of the limbs in Paroligobunis simplicidens suggest that of 
Lutra; 1. ¢., the oblique and limited posterior extent of the internal condyle of the 
femur, the backward sweep of the shaft of the fibula, the proportionate length and 
arrangement of the metacarpals; there are more important characters which very 
strongly suggest that the animal was probably fossorial rather than aquatic in his 
habits. The femur is much longer than the fibula and the shaft of the former bone 
is straight and is transversly expanded near the distal end as in Meles. The fibula 
ison the whole more nearly like that of the latter genus than that of the otter, 
while the astragalus strongly suggests that of Gulo luscus and has the astragalar 
foramen, a characteristic feature in Meles. The John Day form, Oligobunis, was 
regarded as an aberrant member of the Canide by Professor Cope, while Dr. Matthew 
(Bull. Amer. Mus., Vol. XXIII, p. 193, 1907) after the re-examination of the type, 
questions Cope’s reference and transfers the genus to the Mustelidy. After a compar- 
ison and careful study of the newly acquired material now in the Carnegie Museum 
