MAMMALS OF THE MEXICAN BOT^NDARY, 



105 



The })ccfarv of the lower Kio (iraiule and of eastern Mexieo is a 

 smaller animal, having relatively small ears and feet (fig'. 8) and a 

 blacker coloration. The coat is more dense and the bristles less 

 coarse, rigid, and crinkled than in the form here described. The 

 Texas peccary is blackish, whereas the peccary of Arizona and 

 Sonora is grayish, with a black dorsal stripe. 



Fi(i. G.— Tayassi- A.Nca - 

 latu m s o n o k i e n s k . 

 Skull, front view. 

 (Cat. No. 3 T) 8 1 5 , 



U.S.N. M.) 



Fig. 7.— TAYA.s.sr angu- 



L ATIM S O N' O R I E N S E . 



Inner .si'RKAfEoi- ear. 

 (Cat. N o 206 :> (1 

 U.S.N.M.) 



Fri;. 8.— Taya&su angulatum sonori- 

 ENSE. (Cat. No. 20657, U.S.N.M.) 



'(, RiClIT IIINDFOOT. h, RIGHT KORE- 



11 HIT. 



A 3'oung specimen was seen alive, having been canglit by a Mexican 

 ranchman on Cajon Bonito Creek, Sonora, August 25, 1892. at which 

 time it Avas about as large as the eastern cottontail. Color, above 

 reddish brown, with a black vertebral area, beginning anteriorly as a 

 black spot on the nape, extending thence in a line backward and 

 again broadening on the lumbar region, where it bifurcates before 

 terminating. Upper surface thickly sprinkled with black hairs ex- 

 cept in the area occitpied by the '' collar.*' Under j)arts and liml)s 



strongly marked as in yncatanensis, but yellowifth fulvous instead of white. 

 Skull of male similar to that of m;ile aiifjiihitus; skull of female decidedly 

 l,iri,'»T. with longer tooth row. In skulls young enough to show the sutures the 

 n,is.-.l hones are strongly convex posteriorly, long and slender, and only slightly 

 liro.-ider between niaxilltx' than between premaxilhip (differing markedly from 

 their condition in oiti/iihitiis. in which they are very nuich broader between the 

 mnxilhe) ; and the ascending or nasal arm of premaxilla is decidedly longer 

 than in (Uif/nhitKs. 



Iii'iiifirl->i. — Compared with sojiorioixis of Arizona, the sides are less gray, 

 the dorsal band le.ss sharply defined, the shoulder stripes yellower and nuuh 

 more strongly marked. The sexual disparity in size is greater than in .^^ono- 

 ririisis. the female being considerably larger than the male. 



il/rft.s'(/rc»/p»/.s-.— Type ( 9 ad.) : Total length 000, tail 00, hind foot 2ir». 

 Skull: Basal length 20.">, occipitonasal length '224. zygomatic breadth lOS, great- 

 est breadth across squamosals jmsteriorly 0!), ]talatal length l.")l : length of 

 upi)er molariform series 07. {('. Hart Mrrridiit. Proc. Biol. Soc. Washington, 

 XIV, It)Ul, p. 122. 



