MAMMALS OF THE MEXICAN BOUNDARY: 



lb] 



Mil III: :lll(l KlIIN. Pl'OC. Bost. Sim-. \. II,. XXX. 



1901, p. r_' (Syst Results Study X. Am. Maui, to 



Tayassu angulatun 

 No. I, Dec. 27 



close of 1900). 



'I'n ijiiss ii angulation. Elliot, Field Col. Mus.. Zool. Sev., IV, l'i 

 p. 63, pis. xxv, xxvi (Maui. Mid. Am.). 



1. I'M I J. 



Type-specimens. — One Prom the Guadalupe River, two from the 

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



Geographical range,. Tropica] and Sonoran zones of the Texan 

 and Tamaulipan regions. 



Description. — Form, pig-like. Tail, abortive. Toe-. I •">. A large 

 scent gland occupies the upper pari of the rump. Color above black, 

 mixed with soiled grayish white annulations to the bristle-. An 

 erectile inane of long black bristles extends from the occiput to the 

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

 the hind part of the neck, extending obliquely upward and backward 

 from in front of the -boulder to the black mane 

 on the back. The ear- 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 brownish gray 

 on the axillae and hollows of thighs. The limbs 

 are blackish at the hoofs (fig. .*'>). 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 aland 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 -tripe 

 grows le-s 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 ha- nearly grown to mature size. 



('/■in, hi] mill ih nfiil characters. — From T<nj<issu tajacu (Linnaeus) 

 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 annulate on the middle line instead of rounded 

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

 quadritubercular, with intermediate tubercle-, and quadrate in out- 

 line, molariform instead of tritubercular or rounded in outline, pre- 

 molariform : molar- wrinkled in angulatum, not so in tajacu. 

 : :i ii ;: ','. »— x< >. 51 1— <»7 m 1 1 



a 



Fig. 3.— Tayassi angu- 

 LAn.M. a. Right fore- 

 foot; ft, RIGHT HIND- 

 FOOT. 



