50 XOHTH A.MKHIC'AX FAUNA 60. FISH AND WILDLIFE SERVICK 



Type. — No. 68055, male adult, skin and skull. Ignited vStates Na- 

 tional Mnsenm; collected by Edgar A. Mearns, February 6, 1893. 

 Original number 2278. 



Dutrihution. — Texas, except extreme northern and western parts, 

 southern Arkansas, Louisiana, except delta region of Mississippi, and 

 south into northeastern Mexico, including Coahuila and Nuevo Leon, 

 to southern Tamaulipas, Austroi-iparian and Lower Sonoran divisions 

 of Lower Austral Zone. 



General characters. — A large, dark grayish subspecies, with pelage of 

 medium length and texture; skull with high, moderately broad frontal 

 region and weakly developed postorbital processes. Size about as in 

 P. I. hirtvfi of Minnesota, but color grayer, less suffused with buff; 

 mask more uniformly black and continuous across face and on upper 

 surface of muzzle; pelage much shorter and less dense. Similar to 

 P. I. rnexicanus of Chihuahua, but decidedly darker, and cranial 

 characters distinctive. Resembling P. I. vai'ius of Alabama in general 

 color, but somewhat grayer and much larger, with a difTerent skull. 

 Similar in size to P. I. hernandezii of the Valley of Mexico, but less 

 grayish, the postaiiricular spots larger, more conspicuous; skull less 

 flattened and differing in detail. 



Color. — Similar to that of P. I. rarius, but averaging somewhat 

 grayer, less suffused with buff; mask usually more uniformly black and 

 continuous across middle of face and on upper surface of muzzle to 

 nasal pad. 



(^ranlal characters. — Size and general proportions of skull nearly as 

 in P. I. hirtus, but interorbital and postorbital regions usually broader; 

 frontal region similarly high, but usually flatter, with a less distinct, 

 V-shaped, median depression. Similar in size to that of P. I. mexi- 

 canus; frontal region similarly high behind plane of postorbital 

 processes, but more elevated anteriorly, the upper outline more convex; 

 brain case more depressed near fronto-parietal suture; interorbital and 

 postorbital regions usually narrower; postorbital processes of frontals 

 shorter, the upper margin of orbit less deeply concave. Compared with 

 that of P. I. varius the skull is much larger and heavier, with broader 

 frontal region. Not very unlike that of /^ /. hernandezii, but less 

 flattened, the frontal region more elevated; brain case usually more 

 depressed near fronto-parietal suture; postorbital processes of frontals 

 less prominent, the upper margin of orbit less deeply concave; posterior 

 upper premolar and upper carnassial usually smaller. 



Measurements. — Typo: Total length, 900 nini.; tail vertebrae, 290; hind foot, 

 132. Two adult males from Laredo, Tex., respectively: 860, 850: 298, 275; 

 136, 131. An adult male and female from Sabinas, Coahuila: 922, 760: 330, 260; 

 136, 116. Skull: Type: Total length, 130.2; condylobasal length, 125; zygomatic 



