MAMMALS OF THE MEXICAN BOUNDAKY. 



189 



following the curve, 180; from the burr to the fork in a straight line, 

 1-21; longest tip, 52; shortest tip, 50; circumference of burr, 7?); 

 circumference midway between burr and tines, 19; circumference of 

 tines, 25 and 35. Weight estimated at 70 pounds avoirdupois. 



Cranial characters. — The skull of 0. crooln (fig. 18) has very nearly 

 the same conformation as that of Odoco'deux cohnnhianns, the lachrv- 



FK;. r.).— DlAlJKAM SHO\VIN(i POSITION OF VOMICK WITH KKI-ATION TO RASI-SrilENOII). ((, ODOCOILECS 



HEMioNUS CANUS (Cat. Xo. 63141, U.S.N.M.); h, odocoileus couesi (Cat. No. 59229, U.S.N.M.); r, 

 ODOCOILEUS CROOKI (Type, Cat. No. 35752, U.S.N.M.). 



mal fo.ssa being deejx'r than in the Virginia deer, but shallower than 

 in the nude deer. The same intermediate condition obtains with 

 I'espect to the vomer (fig. 19c), in the relationshiiDs of the nasal and 

 [jremaxillary bones; and, in short, the whole animal appears to be a 

 compromise between the characteristics of the white-tailed and mule 

 deer groups. For the characters of the teeth see fig. 20. 



Cranial ineasnrements of tiro aperiineiis of Odocoileus crooki. 



MeiisurfiiU'iit. 



Total length of .skull 



Greatest breadth of skull 



Distance between orbits, measured opposite center 



Distance between pedicels of horns ; 



Nasal bones, greatest length 



Nasal bones, greatest breadth of pair 



Nasal bones, lea.st breadth of the pair 



From tip of nasal to tip of premaxillary bone 



Total length of premaxillary, measured in situ 



Premaxillary bones, from front to premolars 



Premaxillary bones, from front to hinder margin of palate 



Length of upper toothrow 



Distance between first upper premolars 



Distance between last^ipper molars 



Width of bony palate in front of teeth, at narrowest part 



From hinder margin of molars to tip of paroccipital proces.s . . . 

 From posterior molar to anterior margin at foramen magnum. 



Length of lower jaw, measured to end of coronoid jirocess 



From cutting edge of inner incisor to first jireniolar tooth 



Lower jaw, from angle to end of coromiid proci-ss 



Length of lower lateral toothrow 



Lachryiiial fossa, lenglh 



No. .357.52 

 U.S.Nat. 

 M us. female 

 ad. (Orig. 

 No. 1873.) 

 Type. 



82 

 26 

 18 

 53 

 69 

 80 

 163 

 77 

 3J. 

 40 

 16 

 77 



225 

 78 



102 

 87 

 33 



108 

 73 



No. 11144 

 male imma- 

 ture. Amer. 



Mus. Nat. 

 Hist.,N.y. 



(Orig. No. 

 1.59.) 



2(!0 



no 



52 

 82 

 27 

 13 

 .57 

 67 

 82 



73 

 34 

 45 

 19 



223 

 79 



100 

 81 

 30 



