122 Merriam Four JVe?c Peccaries from Mexico. 



pale yellowish white, the whitish color of chin extending- back broadly 

 on each side of underjaw to below ears, forming- a very conspicuous 

 broad Y-shaped marking; underparts sparsely haired, black, grizzled 

 with fulvous; legs and feet blackish, mixed with soiled white near 

 hoofs; the whitish in hind feet forming an indistinct band above hoofs. 

 Cranial chambers. The skull of the type specimen, a fine adult fe 

 male, compared with a skull of the same size from San Lorenzo, Rio 

 Grande, Brazil, received through the courtesy of Professor Hermann 

 von Ihering, presents the following differences: parietal shield narrower, 

 elevated and strongly bulging upward over posterior part of braincase; 

 nasals more acute anteriorly, the free end appearing longer; premaxilke 

 slightly longer; zygomata and posterior expansion of squamosals decid- 

 ly broader; posterior part of palate quite different, the projection be 

 hind molars abruptly narrowed at post molar notch (behind on inner 

 side of molar alveolus) and continuing backward with smooth parallel 

 sides of essentially equal breadth throughout, while in albirostris it is 

 much broader anteriorly and slopes irregularly backward; bullre smaller 

 and ending below in an elongated papilla pointing toward hamular pro 

 cess: basi-occipital considerably narrower between bulla? posteriorly. 



Measurements. Type specimen ( 9 ad.): total length in dry skin 1180: 

 hind foot in flesh 229. Skull: basal length 242; basilar length of Hensel 

 281: occipitonasal length 270; zygomatic breadth 112; greatest breadth 

 across squamosals posteriorly IOC: palatal length 184: breadth of pos 

 terior extension of palate midway between molars and hamulars 16; 

 breadth of basioccipital between bullse posteriorly 20; length of upper 

 molariform series 78. 



Subgenus Tayassu Fischer. 



(Here restricted to the tajacu-angulatus group). 



Tayassu angulatus humeralis subsp. nov. 



Type from Armeria, Colima. No. 45,24:, 9 a( l., U. S. National Mu 

 seum, Biological Survey Collection. February 2(5, 1892. E. W. Nelson 

 and E. A. Goldman. Original No. 1945. 



Characters. Similar to angulatus but sides grayer: head yellower; dor 

 sal black band more strongly marked, almost as sharply as in sonoriensis 

 from Arizona; shoulder stripes yellowish ochraceous, broad and conspic 

 uous, as strongly marked as in yucatanensis but yellowish fulvous instead 

 of white. Skull of male similar to that of male angulatus; skull of fe 

 male decidedly larger with longer tooth row. In skulls young enough 

 to show the sutures the nasal bones are strongly convex posteriorly, 

 long and slender, and only slightly broader between maxillae than be 

 tween premaxillpe (differing markedly from their condition in angulatus, 

 in which they are very much broader between the maxillae); and the 

 ascending or nasal arm of premaxilla is decidedly longer than in angu 

 latus. 



