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BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



reddish or yellowish brown (prairie-dog color) without any inter- 

 mingling of black, but becoming black in a small area next to the 

 hoofs. 



Young about the same size were afterwards seen at Pozo de Luis, 

 in northwestern Sonora, in January, 1893; which were of a pale huS. 

 or clay color, with a less distinct vertebral black stripe. 



Cranial and dental characters.— Th.Q lateral dentition seems to be 

 simpler and lighter than in Tayassu angulatum (typical). The pre- 

 molars are usually quadri tubercular with one of the inner tubercles 

 often obsolete. The posterior molar is smaller and less roughened 

 by needle-like subsidiary tubercles. The skull itself is slightly 

 broader than that of T. angulatum. (See figs. 4, 5, and 6.). 



Measurements of three specimens of Tayassu angulatum sonoriense. 



Life history. — Skins of peccaries killed in the Apache Mountains 

 near Monument No. 40, Mexican Boundary Line, were the first unmis- 

 takable evidence seen of the existence of these animals as we pro- 

 ceeded westward from the Eio Grande. Specimens were subsequently 

 taken in the San Luis, Guadalupe, and Santa Cruz mountains, 

 and in the valley of the San Bernardino River. On the San Luis 

 Mountains they were found from the lower edge of timber uf) to the 

 highest summits, as well as on those parts of the surrounding plains 

 and play as where the nolinas, mesquites, and mimosas grew abun- 

 dantly. 



We found evidences of the former presence of peccaries in the 

 Huachuca Mountain^ Arizona, where soldiers under the command of 

 Capt. Louis A. Craig killed some of them a few years before. Speci- 

 mens were seen in 1892 in the collection of Col. R. F. Hafford, at 

 Tombstone, Arizona. 



Maj. E. K. Otey, of Prescott, Arizona, found peccaries in the Mule 

 Mountains of southern Arizona; and General C^rook found them in 

 Tonto Basin, ^here the writer saw their tracks as far north as Pine 



