THE BARRED PARTRIDGES, 127 
neck, and upper mantle with a ¢riangular chestnut spot at the 
end of each feather; inner wing-coverts, shoulder-feathers, 
sides, and flanks sémlarly marked, but with a white spot or 
partial margin on each web ; breast and belly with round white 
spots. ‘Total length, 9°3 inches ; wing, 4°4; tail, 3°2; tarsus, 
1°2; middle toe and claw, 1°4. | 
Adult Female.—Crest generally dark brown , throat white, w7¢tn 
dark shaft-stripes ; under-parts greyish-brown with round white 
spots. | 
Range.—Western Mexico; States of Sonora, Sinaloa, and 
Jalisco. 
ie spARRED PARTRIDGES. GENUS PHILORDYVX, 
Philortyx, Gould, Monogr. Odontoph. pl. 14 in pt. ii. (1846); 
imainod. p. 17. (1350): 
Type, P. fasciatus (Gould), 
Sexes stmilar in plumage. A well-developed crest extending 
much beyond the feathers of the head. 
First primary flight-feather zz¢termediate in length between 
the ninth and tenth ; fourth slightly the longest. 
Tail composed of ¢welve feathers, nearly ¢hree-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. 5. 1843, p. 133 
Ortyx perrotiana, Des Murs, Rev. Zool. 1845, p. 207. 
Philortyx fasciatus, Gould, Monogr. Odontoph. pt. ii. pl. 14 
(1846); Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 406 
(1893). 
Philortyx personatus, Ridgw. Auk, ili. p. 333 (1886). 
Adult.—Crest blackish-brown tipped with rufous; neck and 
mantle olive-grey, shading into olive-brown on the back, which 
