OETYX. 303 



Messrs. Nelson and Goldman found the present species in the Valley of Comitan in 

 Chiapas, whence it extended to the adjacent border of Western Guatemala, at a height 

 of 3000 to 6000 feet 2. Mr. Richardson has since obtained for us a fuU series of both 

 sexes from Comitan and the Valley of Cuilco. 



Nothing particular has been recorded of the habits of this bird. 



7. Ortyx coyolcos. 



Tetrao coyolcos, Miill. Syst. Nat., Suppl. p. 129'. 



Ortyx coyolcos, Gould, Monogr. Odoutoph. iii. t. 6 (right-hand fig.) '; Lawr. Bull. U. S. Nat. Mus. 



no. 4, p. 45'; Sumichr. La Nat. v. p. 231*; Grant, Cat. Birds Brit. Mus. xxii. p. 423'; 



Handb. Game-Birds, ii. p. 144". 

 Colinus coyolcos, Nelson, Auk, xv. p. 117, 121 '. 



0. ridgwayi similis, sed saturatior, gutturo et praspectore toto nigris : rostro brunneo, mandibula pallidiore ; 



pedibus pallide brunncscenti-griseis ; iride brunnea. Long, tota circa 7"0, alae 4-1, caud» 1'9, culm. 0'55, 



tarsi 1 0. (Descr. maris adulf-.i ex Tehuan tepee. Mus. nostr.) . 

 5 vix a 5 0. ridgwayi distinguenda, et notoeo codem modo transfasciato ; praepectore tamen saturate 



ochraceo, nigro fasciato. Long, tota circa 7'5, alae 4"45. (Descr. feminse adultiB ex Tehuautepec. 



Mus. nostr.) 



Hab. Mexico, Tehuantepec {Sumichrast *, Bicliardson ^), Juchitan * ^, Tapana ^, Santa 

 Efigenia^*, Cacoprieto* [Sumichrast), Tonala^'^, Chiapas^ [Sumichrast, Nelson). 



Like 0. ridgwayi, this species has the throat black ; but it also differs in having 

 the black extending over the front of the neck. A few tiny white spots are also 

 visible above the eye, but no distinct eyebrow is present. 



Mr. Nelson '^ gives trie range as the Pacific coast of Oaxaca and Chiapas, from the 

 city of Tehuantepec to Tonala, occurring from the sea-level to 3000 feet. Sumichrast 

 found it common on all the plains on the western side of the Isthmus of Tehuantepec, 

 where it is locally known as the " Codorniz." " Near Tehuantepec, the home of this 

 ' Bob-White ' is said to be on the partly wooded and partly grassy plains. Old fields 

 and grassy prairies that extend irregularly amid the scrubby forests of that district are 



its favourite haunts The Quails do not penetrate heavily-wooded bottoms along 



streams, where the moisture causes a vigorous tropical forest-growth, unless some 

 farmer hews out a clearing for his cornfields." "^ 



8. Ortyx atriceps. 



Ortyx coyolcos, Gould (nee Miill.), Monogr. Odontoph. t. 6 (left-hand fig.) \ 



Ortyx atriceps, Grant, Cat. Birds Brit. Mus. xxii. p. 424'; Handb. Game-Birds, ii. p. 144, t. 33'. 



Colinus atriceps. Nelson, Auk, xv. p. 122*. 



0. coyolcos similis, sed ubiquo saturatior, fronte et vertiec antico nigerrimis, gastraeo intense castaneo distin- 



guendus. Long, tota circa 7-3, alse 4-3, caudae 2-0, culm. 0-6, tarsi ll. 

 $ vix a 2 0. coyolcos distinguendus, sed forsan saturatior, et fasciis gastraei nigris saturatioribas distin- 



guendus. Long, tota circa 6-8, alae 4-0. (Descr. maris et feminse ex Putla. Mus. nostr.) 



