ORTYX. 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 ?. Mr. Richardson has since obtained for us a full 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, Mill. Syst. Nat., Suppl. p. 129°. 
Ortyx coyolcos, Gould, Monogr. Odontoph. 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, 1217. 
O. ridgway? similis, sed saturatior, gutture et prepectore toto nigris: rostro brunneo, mandibula pallidiore ; 
pedibus pallide brunnescenti-griseis ; iride brunnea. Long. tota circa 7-0, ale 4:1, caudex 1:9, culm. 0°45, 
tarsi 10. (Descr. maris adulti ex Tehuantepec. Mus. nostr.) 
Q@ vix a 2 O. ridgwayi distinguenda, et noteo codem modo transfasciato; prepectore tamen saturate 
ochraceo, nigro fasciato. Long. tota circa 7:5, ale 4-45. (Descr. femine adulte ex Tehuantepec. 
Mus. nostr.) 
Hab. Mexico, Tehuantepec (Sumichrast +, Hichardson®), Juchitan‘4 >, Tapana?, Santa 
Efigenia 4, Cacoprieto * (Swmichrast), Tonala*’, Chiapas? (Sumichrast, Nelson). 
Like O. ridgwayt, 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 the range as the Pacific coast of Oaxaca and Chiapas, from the 
city of Tehuantepec to Tonala, occurring from the sea-level to 3060 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 
297 
farmer hews out a clearing for his cornfields. 
8. Ortyx atriceps. 
Ortyzx coyolcos, Gould (nec 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+. 
O. coyolcos similis, sed ubique saturatior, fronte et vertice antico nigerrimis, gastreo intense castaneo distin- 
guendus. Long. tota circa 7-3, ale 4°3, caude 2-0, culm. 0°6, tarsi 1-1. 
2 vix a Q O. coyolcos distinguendus, sed forsan saturatior, et fasciis gastreei nigris saturatioribus distin- 
guendus. Long. tota circa 6°8, ale 4:0. (Descr. maris et femine ex Putla, Mus, nostr.) 
