THE BARRED PARTRIDGES. 127 



neck, and upper mantle with a ti-iangular chestnut spot at the 

 end of each feather ; inner wing-coverts, shoulder-feathers, 

 sides, and flanks similarly marked^ but with a white spot or 

 partial margin on each web ; breast and belly with round ivhiie 

 spots. Total length, 9-3 inches; wing, 4-4; tail, 3*2; tarsus, 

 V2 \ middle toe and claw, i'4. 



Adult Female. — Crest generally darJz brozvn ; throat white, uitli 

 dark shaft-stripes ; under-parts greyish-brown with round white 

 ipots. 



Range. — Western Mexico; States of Sonora, Sinaloa, and 

 Jalisco. 



THE BARRED PARTRIDGES. GENUS PHILORTVX. 



Philoftyx, Gould, Monogr. Odontoph. pi. 14 in pt. ii. (1846); 

 Introd. p. 17 (1850). 



Type, P. fasciatus (Gould), 



Sexes similar in plumage. A well-developed crest extending 

 much beyond the feathers of the head. 



First primary flight-feather i?itermediate in length between 

 the ninth and tenth ; fourth slightly the longest. 



Tail composed of tivelve feathers, nearly three-fourths of the 

 length of the wing. 



Tarsus shorter than the middle toe and claw. 



Only one small species is known. 



I. THE MEXICAN BARRED PARTRIDGE. PHILORTYX FASCIATUS 



Ortyx fasciatus^ Natterer, MS. ; Gould, P. Z. S. 1843, P- '^ol> 

 Ortyx per?'otiana, Des Murs, Rev. Zool. 1845, P- 207. 

 Philortyx fasciatus, Gould, Monogr. Odontoph. pt. ii. pi. 14 

 (1846); Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 406 



(1893). 

 Philortyx personatus, Ridgw. Auk, iii. p. ^iTiZ (18S6). 



Adult. — Crest blackish-brown tipped with rufous ; neck and 

 mantle olive-grey, shading into olive-brown on the back, which 



