32 Merriam — Two New Bighorns mid a N'ev! Antelope. 



hairs on the nape; a median dorsal dark streali usually present on neck, 

 sometimes reaching posteriorly to shoulders; head markings more sharply 

 defined; occiput distinctly white or whitish, clearly defined posteriorly, 

 and divided by a median dark stripe. 



Cranial characters. — Skull similar to that of americana but orbits less 

 abnaptly protruding antero-inferiorly; premaxillse more slender, especial- 

 ly posteriorly; bullse thinner; lips of posterior nares longer (facial part 

 of skull set farther forward). 



Measurements. — Total length 1420; tail vertebrfe 145; hind foot 410; 

 height at shoulders 830. 



