468 CANIS. 
interorbital constriction, 29 (30.5); width of braincase above zygo- 
mata, 59 (60); across postorbital processes, 46 (46.5); median length 
of nasals, 53 (60); lateral length of nasals, 63 (67); width of rostrum 
above last premolar, 27 (25); palatal length, 81 (82); width of palate 
at posterior ends of carnassials, 42 (40); between last molars, 29.5 
(27); palatal arch to end of hamular process of pterygoid, 30 (31.5); 
width of basi-sphenoid at anterior margin of bulle, 15 (15.5); width 
of basi-occipital at posterior margin of bulle, 14 (15); length of upper 
carnassial, outer alveolar border, to (16); length from anterior edge 
of canine to posterior margin of last molar, alveolar border, 71 (75); 
alveolar length of upper molar series, 29.5 (33); postero-antero width 
of last molar, 5 (6); length of last molar, g (10.5); length of mandible, 
angle to alveolus of outer incisor, 121 (123); height at condyle, 24 
(23.5); at coronoid process, 47 (50); alveolar length of lower carnas- 
sial, 12 (19); length of lower molar series, 36 (42); anterior margin of 
canine to posterior margin of last molar, alveolar border, 77 (83.5). 
The numbers in parentheses are the measurements of a skull of a 
male. 
470. mearnsi (Canis), Merr., Proc. Biol. Soc. Wash., XI, 1897, p. 30. 
‘liot, Syn. N. Am. Mamm., 1gor1, p. 302. 
MEARNS’ COYOTE. 
Type locality. Quitobaquita, Pima County, Arizona. 
Geogr. Distr. State of Sonora, Mexico, to southern Arizona. 
Genl. Char. Size small; color bright; skull and teeth small. 
Color. Forehead grizzled gray and fulvous; top of head, nape, 
and ears light fulvous; muzzle cinnamon rufous; rest of upper parts 
buffy ochraceous mixed with black; under parts white; belly tinged 
with buffy ochraceous; throat buffy, hairs tipped with black; fore 
and hind legs and feet bright orange fulvous all around; upper side 
of fore legs with black mixture; tail beneath pale fulvous, whitish at 
base; remainder with black-tipped hairs; tip of tail black. 
Measurements. Total length, 1100; tail vertebre, 330; hind foot, 
180. Skull: basal length, 163; Hensel, 160; zygomatic breadth, 83; 
palatal length, 88; mastoid breadth, 56.5; crown of upper sectorial, 19. 
471. impavidus (Canis), Allen, Bull. Am. Mus. Nat. Hist., 1903, 
p- 609. 
Bop Coyote. 
Type locality. Rio del Bocas, State of Durango, Mexico. A\lti- 
tude, 7,000 feet. 
Genl. Char. ‘‘Similar in coloration to C. cagottis, but much 
larger, and the upper carnassial with a prominent protocone; in size 
and dental characters similar to C. mearnsi, but much paler, the 
