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BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Genus CALLIPEPLA Wagler 



Callipepla Wagler, Isis, 1832, 277. (Type, by monotypy, C. stremta Wagler = Ortyx 



squamatus Vigors.) 

 Calipcpla (emendation) Haetlaub, Arch, fiir Naturg., 1853, ii, 40. 



Medium-sized Odontophorinae (wing about 112-127 mm.) with 14 

 rectrices, tail more than two-thirds (but less than three-fourths) as long 

 as wing, crest rather short and bushy with its feathers not conduplicate, 

 neck, chest, and breast conspicuously squamated, and sexes alike in colora- 

 tion. 



Bill relatively small, the chord of culmen (from extreme base) much 

 less than half the length of tarsus, its depth at base not greater than dis- 



XI 



Figure 16. — Callipepla sqtiamata. 



tance from anterior end of nasal fossa to tip of maxilla and slightly less 

 than its width at rictus; culmen not very strongly convex, broadly 

 rounded. Outermost primary equal to eighth or very slightly shorter, the 

 third, fourth, and fifth longest. Tail a little more than two-thirds (de- 

 cidedly less than three-fourths) as long as wing, graduated (the gradu- 

 ation about equal to length of first two phalanges of middle toe), the 

 rectrices (14) firm, slightly tapering terminally, but with rounded tips. 

 Tarsus much less than one-third as long as wing, slightly shorter than 



