1884,] 517 (Cope, 
Measurements. M. 
Axial length from occipital condyle to postfrontal pro- 
GOSS cibun hyd atelealigs arvlgn weincolenet sjajantiaieen waive wus WlNus Wet Vly, Wee MITh 076 
Axial length from occipital condyle to palatonareal bor- 
LOBE aye eed Gi ache RW Ww inn a Ginna Wi Nw 8 ys wvaror bow VN GEN CRO Ne 079 
Axial length from occipital condyle to end of last molar. .091 
Diameters bf-orbtt WVOLUCHL 54 Ja.e:eosinrs spd ialousl viaty dvvs eOBL 
UHOMZOMUD I sid sani wc waoraeehs 02% 
Depth malar bone at middle of orbit........00-- ss eens 016 
“zygomatic process posteriorly to glenoid face.... .028 
“  gkull (right angles to profile) at glenoid face,... .045 
te a KH hy OLD bearbe sea bi: sisi ie .046 
‘ at i ie Pater Lec. cist sion OOO) 
Elevation of occiput from foramen magnum......++-++ 044 
Width top of muzzle at preorbital fossa. ........06.6+ .040 
«at middle of supraorbital border, 10... 6.6.00 059 
vie ¢ postfrontal PrOCESS. cee e ei ies ence ewe eeecnees 075 
£60.  MMGIAD GLOW OLDI 4 sis vielen s vis wise 899 iw aie) ece 110 
MN ‘« zygomatic process of squamosal...........605 145 
of oceiptt at condyles. ..... Si Wybik seven oie) ugvanle pene 6 066 
sh “© Ocipital CONAYV1EBi ccc sees d vewitrodite si wales OOO 
sit “ palate at palatonareal foramen...........6..- 028 
Oe ES UMN FENG NL MANS a voAiG Ml psNTerNty pMbta ae PG/LIBISIO giiapsy eayete 082 
Co Oe Ch ERY CREANLO BL ‘siVid erie 'ein « aba OraV EIN Gel Nive wee SUOU 
Length of superior dental series with canines.......... .088 
: SE ONOMUGINT BOLIGR iss cares sind bons ely ei cave ujaa 8 047 
ui #6 CPU MONAT BOLIC: vis’ sibs iki s,s 5, ecuwierd webie sey Ob .036 
TlAmmatebe canine At base speed ag Unis vavCesnitl 84.9 8 .009 
CYAMSVETSO.. soceesersecees .010 
Tt eteve Pome: sf anteroposterior ........50...0es . .009 
\transverse...... ds ujelasa pala leney a sha qos Ole 
Miwmmeterekt. dee ANtOROPOStEMION. scvv sasveeuua vases cs 014 
UPPARSYCUBG Ht ey bvu ets cd Muwee y noes) 018 
The typical specimen of this species was found by Charles H. Sternberg 
on the North Fork of the John Day river. The horizon is probably some- 
what different from that of the true John Day epoch. 
Eucrotaphus jacksonii Leidy. 
Proceedings Academy Philadelphia, 1850, p. 92. Ancient Fauna of Ne- 
braska, Smithsonian Contributions to Knowledge, 1852, p. 56, Plate VilLy 
figs. 4-6. Orcodon bullatus Leidy, Extinct Mamm., Dakota and Nebraska, 
1869, p. 106. Report U. S. Geol. Survey, Terrs. 1878, I, p. 818. Oreodon 
occidentalis Marsh, Amer. Journal Sci. Arts, 1873 (May), p. 409. Zpor- 
eodon occidentalis Marsh, Loe. cit., 1875, p. 250. Hucrotaphus occidentalis 
Cope, Bulletin U. §. Geol. Survey Terrs., V, p. 59. 
Comparison of numbers of crania from the White river and John Day 
