Mci'vidin — f)r^cri plioii.s of Xcji' Jk’dvs from Xoiih Aidcvico. 181) 
Ursus mag:ister sj). nov. 
'I'lijx' Xn. KiOlor) old, II. S. Nut. Mus., liiolo^ical Sui’VP.y Coll. 
l’’fom Los Liacitos, head of San Onofre. Canyon, Santa Ana .Ml.s., 
SontluM’ii tlalifoniia. Antiiist, 11)00 or 11)01. Killed and presi'iited hy 
1 h'nry A. Stcnvaid. 
('ha rdctri-K. — Si/.('of male, linii'(' (estimated w(“i<;ht over 1400 pounds), 
lai’irc'st of the known (iri/.zlies, e.onsiderahly lar^(‘r than I'rsvx califoriucus 
of the Mont('r('y rej^ion, and even than Ursus hurrihllis, the jinait hnllalo 
killinix (irizzly of the Plains (oidy equalled l).y the' larc:('st alrxandrac (>\ 
Kenai I’eninsnla); se.xnal dis])arity j^reat, sknll of femaU' hardly hall the 
hnlk of male; sknll of male of rather a <>eneralized type; not dislu^d. 
Claws of old temale from head of Trahneo Canyon, Santa .\na iMts., 
exceediiiLrly lonjr, stronaly enrved, mainly yellowish above. 
< 'olor .— (()ld temaU' from head of Tral)ne.(j (kinyon) : (ieiu'i'al color dusky 
or sooty all over (‘xee})t luaid and trrizzlin*^ of hae.k. .Muzzle .i>:ray or 
mouse brown, i)alest above; top of luanl and neck very dark brown 
sparsi'ly grizzled with pale tipped hairs; hack dusky j^rizzled with (grayish ; 
li'irs and nnd(“r parts wholly blackish. 
<,'niuial cliarnctrrs. — Sknll lon^, vault of cranium well arched, but not 
aliruptly; rostrum h)n,o’and high; fronto-uasal region elevah'd, in same 
l)lane with frontal shield and rostrum; frontal shield flattish I)ul not flat, 
slightlj" sulcate mediallj' and slightly swollen on each side between post¬ 
orbital processes, the i)oint reaching fronto-parietal suture; zygomata 
only moderately spreading, angular, the posterior root somewhat expanded 
ami rising rather abruptly from plane of s(piamosal shelf; sagittal crest 
rather short; ])alate scooped out auteriorily, forming a basin-like depres¬ 
sion surrounding the anh'rior palatine foramina; occii)ito-sphenoid length 
lOl'LS mm. Teeth large and broad l)ut by no means disproportionate to 
large size of skull; 1st upper molar broad; last upper molar absent, but 
from its alv(‘olus and its form in the female, obviously broad, short, 
strongly triangular, tlu' heel small, uarrf)wed posteriorly, obliquely 
emarginat(‘ on outer side; 4th tower premolar broad, with rather short 
slightly sloping heel, narrow, impc'rlect sulcus, without posterior cusplets ; 
1st lower molar apparently normal ( much worn in type specimen); middle 
lowin' molar absent in type speciincm but apiiarently normal, judging 
from the female (in which, however, it is badly worn). 
Skull of female of extreme age from Trabuco Canyon (No. 15()5h4, 
r. S. Nat. .Mus., biological Survey Coll., killed Jau. o, l!)08, by Andrew 
.loplin and Kdward .\dkinson): Size small ; rostrum short and depressed ; 
frijnto-nasal region strongly dished ; frfintal shield Hattish, slightly sulcate 
interorbitally, short-pointed, beaded posteriorly by elevated temporal 
impressions, rising rather abruptly at orbits ; sagittal crest long and neai;^y 
horizontal; i)alate and i)ostpalatal shelf broad, flat posteriorly, concave 
anteriorly. 
Measurements in Hesh of old male (the type); Height at shoulder from 
Hat of foot 4 ft. ( = 1220 mm.); total length, snout to tail 0^^ ft.* 
Apnarcntl.v an error. 
