424 PHASIANIDJE. 



0. grayson'i. Total length 7'7 inches, wing 4*2, tail 2-3, tarsus I'l, 

 middle toe and claw 1-3, 

 Hah. Oaxaca, S. Mexico. 



a. J ad. sk. Mexico. Purchased. 



b-f. d" ? ad. et Juchitan,Tehuantepec, Salvin-Godman, Tweed- 



vix ad. sk. Feb., April, & Auo^. dale, and Gould Colls. 

 {F. Sumichrast). 



g-k. J 2 ad. et Tehuantepec, F'eb. ( W. Salvin-Godman Coll. 



vix ad. sk. B. Richardson). 



7. Ortyx atriceps. 



Ortv-V covolcos, Gould {tiec Miill.), Monoqr. Odontoph. pt. iii. pi. 6, 

 left-hand fig. (1850). 



Adult male. Differs chiefly from the male of 0. coyolcos in having 

 the top of the head, superciliary stripe, chin, and throat all uniform 

 black without a trace of while, and the general colour of both upper 

 aud uuderparts darker. Total length 7*7 inches, wing 4'2, tail 2'3, 

 tarsus 1'2, middle toe and claw 1"4. 



Adult female. Differs from the female of 0. coyolcos in being 

 altogether darker, especially on the upper parts ; the grey markings 

 of the mantle in the latter species being replaced by brownish black. 

 Total length 7'4 inches, wing 4, tail 2'3, tarsus Dl, middle toe and 

 claw 1-35. 



Hah. Putla, W. Mexico. 



a,b. S2- ad. sk. Putla, W. Mexico, Sept. Gould Coll. (Types 



(Rebouch). of the species.) 



c, d. (S 2 f'd- sk. Putla, W. Mexico, Sept. Salvin-Godman Coll. 

 {Rebouch) . 



8. Ortyx castaneus. 



Ortyx castaneus, Gould, P. Z. S. 1812, p. 182 ; id. Monogr. Odontoph. 

 pt. iii. pi. 3 (1850) ; Gray, List Gallince Brit. Mus. p. 76 (1867) ; 

 id. Hand-l. B. ii. p. 273 (1870). 



Adult male. Differs chiefly from 0. cubanensis in having the top of 

 the head, mantle, and general colour of the rest of the upper parts 

 dark chestnut, the black markings being much reduced and the buff 

 edges to the scapulars aud outer secondaries strongly marked ; the 

 chin and throat are entirely black, and the wide white superciliary 

 stripe of 0. cubanensis is only represented by an indistinct white line. 

 The chest is dark chestnut like the mantle, and the middle feathers 

 of the breast and belly are white barred with black. Total length 

 9 inches, wing 4*5, tail 2'4, tarsus 1"3, middle toe and claw 1'5. 



It has been suggested [Baird, Brew., and Ridgw. N. Am. B. iii. 

 p. 468 (1874)] that this is " a somewhat melanistic plumage (of 

 0. virginianus) occasionally seen in specimens from Iowa, Illinois, 

 &c. ? " but this seems to me exceedingly improbable. In the 

 Museum collection there are varieties of 0. texanus which have the 

 chin and middle of the throat black, but otherwise their plumage 



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