184 Proceedings of the Biologiccd Society of Washington. 
outetiuidiug; biiHC of cruniuiu longer (postpalatal length and occipito- 
jsphenoid slightly greater ); outer side of zygomata straigliter (less bowed); 
meatus tube longi'r ; lower jawlonger ; angle and condyle more elevated. 
IJrsus Shoshone sp. nov. 
Ti/pr from bistes Park, Rocky Mts. of northern Colorado. Xo. L^O.’JlSo 
S' old, P. S. Xat. Mas., biological Survey Coll. Purchased. 
Characters. —Size medium or rather large, but much smaller than Itor- 
rihilis and bairdi —abont same size as absarokits bnt narrower and widely 
diflerent. External characters mdviiown. 
Cranial characters. —Skull rather long and high, with llattisb long- 
sloping frontal shield coiitiiiuing plane of rostrum to high point about 
midway between postorhitals and fronto-parietal suture; moderately 
sju’eading zygomata; anterior (frontal) part of hraincase keeling into 
sagittal crest; sagittal crest long and high; lamhdoid crest high; post- 
orbital ])rocesses peg-like, outstanding, rather slender; nasal region 
slightly dished and silicate in middle third (nasals dip])ing toward one 
another—may Ik* individual); rostrum of moderate hreailth, strongly 
ascending in plane of frontal shield; lachrymal duct on inner aspect of 
orbital rim. 
Skull of adult female (fi’oni Ft. l"red Steele, A\'yoming, Xo. lW) 7()1 l.h S. 
Xat. Mus., Ihol. Survey Coll.): Skull long, low, and rather slender; 
frontal shield narrow, long lyre-pointed jxjsteriorly, Hat iutei’orhitally, 
slightly convex (transversely) from ])lane of ])ostorhitals posteriorly; a 
slight depression on each frontal on inner ( medial) side of postorhital 
process; postorhitals slimder and outstanding; rostrum slender; sagittal 
crest short, reaching only half way from inion to fronto-parietal suture; 
lamhdoid crest moderate; meatus tulae short; apex of coronoid produced 
posteriorly, overhanging deep coronoid notch; ramus Hat and light. 
H'lteth rather small; u|)per molars relatively large; lower molars narrow. 
Adult male shoshone compared irith adult male horriaeus : Rostrum, 
nasals, and frontal shield more elevated and much moi’e strongl}' ascend¬ 
ing posti'fiorly (less tlattmied and less hoi‘izontal); lamhdoid much more 
strongly developed. 
Adult male shoshone compared with adult )uale absarokus : Frontal shield 
Hat, rising gradually in long continuous slo])e to highest point, about '2h 
mm. anterior to fronto-])arietal suture [in (d)saroki(s arched, strongly con¬ 
vex, and rising suddenly to highest point, immediatidy behind orbits] ; 
postorhital j)rocesses more slender; fronto-nasal region only slightly 
dished; rostrum moi'i' sUmdi'r; hraincase narrowi'r; hnaidth across 
S(piamosal shelves less. 
Ursus shoshone canadensis suhsp. nov. 
Type from Xloose Pass, near i\It. Robson, Rritish Columbia. Xo. 
174511 S 11(1., IJ. S. Xat. .Mus. Collected by X. Hollister and Charles D. 
Walcott, .1 r., .1 Illy L'!!, 10! 1. (trig. Xo. in 11 ollister catalogue 5702. 
Characters (Tyjie spi'cimen ). — Size medium; color brown, grizzled with 
