MAMMALS OF THE MEXICAN BOUNDARY. 



17 ( .> 



zygomatic process of the squamosal (fig. L3a) is straighter than 

 in other species, lacking the sharp dhow seen in the hemionus group. 



Fig. 13. -< idocoileus i ouesi. a, Skuj.i., i. 



I he base of the vomer is not 

 (fig. IDA). The horns (fig. 14 



n i ! R \ VIEW i .i i Mo 



at. No 37086, CJ.S.N.M.) 



.S.N.M. 



M MIURY 



fused throughout, hut free posteriorly 

 ) are rather stout, hut short. 



Cranial measurements of H specimens of Odoeoileus cuuesi." 



i All arc adults in which the permahenl premolars are considerably worn. 



The rent wal of the horns.— The first young horns of a two-year-old 

 buck (No. |£ffo-, CJ.S.N.M., Cloverdale), killed July L5, were covered 

 with fresh velvet, and measured ~>1 mm. in length. Another in the 

 second year (No. §-{nHH), I 1 . S.N.M.) had hard, polished spike horns 

 95 nun. in length when killed. November '27. An adult male (No. 

 59928, U.S.N.M.), killed Augusl 29, had vascular horn- only 110 mm. 

 high. An old male ( No. 20680), taken September 5, L892, had horn- 

 in mature velvet. Two adult-, killed September 8, 1893, had large 

 horns in velvet ju-t beginning to rub off. Another old male (No. 

 |fH£, U.S.N.M.), killed October 1. had fully grown horns, but still 



