272 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Coahuila; spec). — Hellmayr and Conover, Cat. Birds Amer., i, No. 1, 1942, 



231 (syti. ; distr.). 

 [Callipepla] [sqtmniala] squanmta Burleigh and Lowery, Occ. Pap. Mus. Zool., 



Louisiana State Univ., No. 12, 1942, 189, in text (se. Coahuila). 

 Tetrao cristata (not T. cristatus Linnaeus) La Leave, Registro Trimestro, i, 1832, 



144 (Mexico) ; La Naturaleza, vii, 1884, app., p. 65. 

 Callipepla strenua Wagler, Isis, 1832, 278, 1229 (Mexico; coll. Wiirtcmberg Mus.). 

 Callipepla sqitainulala Salle and Parzudaki, Cat. Oiseaux Mexique, 1862, 6 



(Mexico). 



Genus PHILORTYX Gould 



Philortyx Gould, Monogr. Odonloph., pt. 2, 1846, pi. 14 and text, and Introd. 1850, 

 p. 17. (Tj'pe, by monotypy, Orlyx fasciatus Gould.) 



Small Odontophoridae (wing about 95-100 mm.) with tail nearly two- 

 thirds as long as wing, scapulars and tertials spotted with black, and with 

 sides and flanks broadly banded with brownish black and white. 



Figure 17. — Philortyx fasciatus. 



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

 less than half as long as tarsus; depth of bill at base slightly exceeding 

 distance from anterior end of nasal fossa to tip of maxilla and decidedly 

 greater than width at rictus. Outermost primary nearly as long as sixth 

 (from outside), the third and fourth longest. Tail nearly two-thirds as 

 long as wing, strongly rounded, its graduation equal to about half the 

 length of tarsus, the rectrices (12) firm, rather broad, obliquely rounded 

 or subtruncate at tips. Tarsus less than one-third as long as wing, shorter 

 than middle toe with claw, the outer side of planta tarsi mostly covered 

 by a continuous series of obliquely transverse scutella, the inner side with 



