MAMMALS OF THE MEXICAN BOUNDARY. 



161 



Tayasmi tiiif/iilalinii. Millek .-mil Rehn, I'n-c Bost. Soc. 



No. h Dec. 27. 1901. p. 12 (Syst. Results Study X. 



close of 1000 ». 

 Tar/a.snii (iiii/iiliitiUH, Ki.liot. Field Col. .Mils., Zool 



1». (\H. pis. x\\. xxvi ( .Miiin. Mid. Am. ». 



N. II.. XXX. 



.Vui. Miiui. to 



Scr.. ]y. I'T. 1. I!t04. 



Type-xjMchncitx. — One from the (Tiiirdalupe Kivci'. two from the 

 Lhuio Eiver, and two from a tributary of the Red River, Texas. 



(re<></r<ipli/c(il niiKjc. — Tro[)ical and Soiioran zones of the Texan 

 and Taniaulipan reijions. 



l>excr'ipt'i<))i. — Form, pig-like. Tail, abortive. Toes, 4-3. A large 

 seent gland occupies the upper part of the rump. Color above black, 

 mixed with soiled grayisji white annulations to the bristles. An 

 ercctih' mane of long black bristles extends from the occiput to the 

 -cent gland on the rump; and an incomplete whitish " collar " crosses 

 llie hind i)art of the neck, extending obliquely upAvard and backward 

 fi'om ill front of the shoulder to the black mane 

 on the back. The ears are blackish externally 

 and grayish internally where the long hairs are 

 arranged in five separate lines, which are narrow 

 at base, broadening towards the tip, which they 

 fail to reach. The muzzle, cheeks, and under 

 side of head are lighter in color than the back, 

 having a large admixture of brownish gray an- 

 nuli to the bristles. The under surface is reddish 

 black mesially, this color fading to brow^nish gray 

 on the axilla^ and hollows of thighs. The limbs 

 are blackish at the hoofs (fig. 3), becoming paler 

 above as the light rings of the bristles increase in width. 



The young when newly born are plain yellowish gray on limbs and 

 under parts ; above, brownish yellow mixed with black, with a black 

 vertebral stripe extending from the occiput to the gland on the rump; 

 tip of ear dusky. Sometimes the shade of coloring is decidedly red- 

 dish in young peccaries. In growing older the black vertebral stripe 

 grows less conspicuous, as black gradually becomes the predominant 

 color of the upper surface ; but the collar and pale annuli do not lose 

 their reddish shade until the animal has nearly grown to mature size. 



Cvan'wl and dental characters. — From Tayassu tajacx (Linnteus^ 

 it differs in having the molar crests continued forward to base of 

 canine alveolus instead of terminatng above the infraorbital foramen : 

 nasal bones pinched or angulate on the middle line instead of rounded 

 in cross section; first (fourth of the old works) superior premolar 

 quadritubercular, with intermediate tubercles, and quadrate in out- 

 line, niolariform instead of tritubercular or roimded in outline, pre- 

 molariform; molars wrinkled in atigidatarn.. not so in tajacii. 

 30G39— No. 56—07 m— — 11 



Fig. 3. — TAYASsr angu- 

 LATCM. a, Right fore- 

 foot; h, RIGHT HIND- 

 ?"OOT. 



