- 1915.] Matthew and Granger, Lower Eocene Wasatch and Wind River Faunas. 13 
Fore foot. The unciform and me. I, I, IV and V are preserved. They 
are notably more robust than in Vulpavus as well as of larger size. The 
trapezoid facet of mc.II faces proximad instead of intero-proximad as in 
Vulpavus; the facet of me.I for the trapezium likewise lacks the obliquity 
of the corresponding facet of me.I on Vulpavus. These features indicate a 
less prehensile hand. The unciform is remarkably different from the 
known Miacide and Arctocyonide in that it appears to indicate a serial 
carpus, there being no proximal facet for the lunar. There is a single 
proximal facet for the cuneiform, notable chiefly for its extent; a distal 
facet for me. IV—V, imperfectly divided; and three internal facets, for 
me.I], magnum, and centrale or lunar or both. 
Measurements. 
Length of upper cheek teeth p*-m’°. ee oa j1.3 
Diameters of p? anteroposterior 4.5 transverse 4.1 
(Z9 (a9 p* 6c 5 : 8 6c 6 : 5 
6c cc m! 6c 6 : 8 (a3 8 : 9 
a9 6c m2 6c 6 : 7 6e 8 : 8 
be ce m? (<9 5 ; @) (79 ee : 
66 ‘al qT: 6.2 66 a 
Length of skull from p* to: mastoid process. ous i oie ek ie oe ee 80 
Wadth of skull at prefrontal processes ss i 450 
Width of skull at postorbital constriction (this and the preceding dimension 
are much exaggerated by the crushing of the skull).................... 20.5 
Width of brain-case....... Gs Wits Has wes gp tat Na en lee Ghee ac gy aa 45.3 
Humerus, length from distal end to apex diameter of deltoid crest........... 66.8 
re Piasieter. (Ot. Cimbs ed ke ee ee aa ees 38 .0 
Femur, length from distal end to apex of 3d trochanter.................-.. 97.5 
Radius, diameters of head, 13.5 X 14. 
e shaft one-fourth down 8.5 X5.5. 
ARCTOCYONID. 
Anacodon Cope 1882." 
Type, A. ursidens from Lysite of Big Horn Basin, Wyoming. 
Generic characters: Crowns of molar teeth flattened, rugose, cusps obscured, 
premolars } much reduced. Lower jaw flanged anteriorly, canine and incisors re- 
duced and crowded, upper canine probably laniary. 
Three additional specimens of this rare genus were secured by Mr. 
Granger in Wyoming and one in New Mexico. The Wyoming specimens 
are from the Lysite and uppermost Gray Bull zones, the New Mexican 
1 Proc. Am. Phil. Soc., Vol. XX, p. 181. Pal. Bull. No. 34. 
