302 PHASIANID^. 



out of Coatzacoalcos, and it was seen a little further north in the open country about 

 the shores of the beautiful lake of Cateraaco. 



5. Ortyx ridgwayi. 



Colinus ridgwayi, Brewst. Auk, ii. p. 199 ' ; iv. p. 159 '; Stephens, Auk, ii. pp. 228, 231 ' ; Bendire, 

 Life Hist. N. Amer. Birds, p. 10*; A. O. U. Check-1. N. Amer. Birds, 2nd ed. p. 107' ; 

 Nelson, Auk, xv. p. 121 '. 

 Ortyx ridgivayi, Grant, Cat. Birds Brit. Mus. xxii. p. 422'; Handb. Game-Birds, ii. p. 143'. 

 Supra sicut in ceteris speciebus generis Ortygis coloratus et decoratus, scd subtus vinaceo tinctus et praecipne 



supercilio, facie lateral! et gutture toto nigris distinguendus. Long, tota circa 7-5, alae 4-7, caudse 2-2, 



culm. 0-6, tarsi 1-15. (Descr. exempl. typ. ex Sonora. ilus. Brit.) 

 2 vix a 5 0. peetoralis distinguendus, sed, ut videtur, dorso minus irrorato, et magis distincte fulvo trans- 



fasciato distinguendus. Long, tota circa 8-0, alee 4-8. (Descr. feminse ex Mont. Barboquivori, Arizona. 



Mus. nostr.) 



Hob. NoKTH America, Southern Arizona 4^. — Mexico, Sonora (Cahoon^), Sasabe 

 (Stephens^), Campos, Bacuacbi [Benson^). 



The Masked Colin is the first of the black-throated species on our list. It is found 

 within a restricted area in Southern Arizona, extending into Sonora, where Mr. Nelson 

 states it occurs at from 1000 to 2500 feet above the sea ^. 



According to Mr. Brown, the present species cannot be said to be a mountain bird, 

 as it inhabits the " mesas," or tablelands, in the valleys of Arizona, and possibly the 

 foot-hills^. He states that its food consists of seeds, berries, and insects, as well as 

 green leaves. The same observer records that this Colin, besides the usual note of 

 " Bob-White," has a second call, frequently heard when the flock is scattered, and used 

 as an assembly-signal. The nest is a shallow depression in the ground, and the eggs 

 are white ^. 



6. Ortyx insignis. 



Colinus insignis, Nelson, Auk, xiv. p. 46^ ; xv. p. 122"; Grant, Ibis, 1902, p. 241 '. 



0. ridgwayi similis, gutture tantum nigro, sed ubique saturatior, gastrseo saturate castaneo, hypochondriis imis 

 vix albido maculatis, et linea alba supraciUari distinguendus. Long, tota circa 7'5, cauds 1'9, culm. 0-45, 

 tarsi 10. 



2 0. ridgwayi $ similis, sed saturatior, et subtus nigro late et distincte transfasciatus. Long, tota circa 7'5, 

 alae 4*3. (Descr. maris et feminae ex Chiapas. Mus. nostr.) 



Hob. Mexico, Valley of Comitan, Chiapas {Nelson^, Richardson), Cuilco {Richardson); 

 Guatemala, Nenton {Kelson & Goldman^). 



This black-throated species is very nearly allied to 0. ridgwayi, but is darker and of 

 a deeper chestnut beneath. The distinct white eyebrow is also another characteristic. 

 The female, too, is much darker than that of 0. ridgwayi, and the bars on the under 

 surface are more complete and darker, but not to the same extent as in the female 

 of 0. salvini. 



