BIRDS OF NORTH AND MIDDLE AMERICA 349 



distally attenuated blackish shaft stripes and broadly tipped with white, 

 the white, area divided into two spots by the shaft stripe. 



Natal down (sexes alike). — Forehead and broad superciliary area pale 

 clay color paling to pinkish buff posteriorly on the nape ; center of crown 

 and forehead and a wide spinal band extending to the tail chestnut-brown 

 indistinctly edged with clove brown; rest of upperparts light pinkish 

 cinnamon with a faint grayish tinge, mottled with dark clove brown to 

 fuscous ; a narrow fuscous line from the back of the eye to the side of the 

 nape; sides of head pale dusty pinkish buff; chin, throat, and abdomen 

 white; breast, sides, flanlcs, thighs and vent washed with dusty light 

 pinkish cinnamon; bill and feet (in dried skin) yellowish. 



Adult male.— Wing 95-103.5 (98.3) ; tail S0-S8.S (54.6) ; culmen from 

 base 14.7-16 (15.4); tarsus 27.1-32 (29.1); middle toe without claw 

 23.9-26.6 (25.3mm.).3B 



Adult jemale.— Wing 95-103.5 (98.5) ; tail 50-58 (54.2) ; culmen from 

 base 14.5-16.3 (15.1) ; tarsus 27.2-31.1 (29.2) ; middle toe without claw 

 24.5-26.2 (25.2 mm.).3« 



Range. — Resident throughout Yucatan (Merida, Chichen Itza, Chable, 

 Tizimin, etc.) and Campeche (Campeche), except for the arid area 

 around Progreso. 



Type locality. — Chichen Itza, Yucatan. 



Ortyx nigrogularis Gould, Monogr. Odontoph., pt. 2, 1846, pi, 4 and text, part 



(Yucatan). — Gray, Gen. Birds, iii, 1846, 514, pi. 132; List Birds Brit. Mus., pt. 



5, Gallinae, 1867, 76.— Lawrence, Ann. Lye. Nat. Hist. New York, ix, 1869, 209 



(Merida, Yucatan). — Nehrkorn, Joum. fiir Orn., 1881, 69 (Yucatan; descr. 



eggs). — BoucARD, Proc. Zool. Soc. London, 1883, 461 (Chable, Yucatan; habits). 



— Beristain and Lausencio, Mem. y Rev. Soc. Cient. "Antonio Alzate,'' vii, 



1894, 219 (Yucatan). 

 [Ortyx] nigrogularis Reichenbach, Synop. Av., iii, 1848, Gallinaceae, pi. 193, fig. 



1681. — Sclater and Salvin, Nom. Av. Neotr., 1873, 137, part (Yucatan) . 

 Ortyx nigrigularis Sclater and Salvin, Ibis, 18S9, 22S, part (Yucatan). 

 Olrtix] nigrogularis Cubas, Cuadro Geogr., Estadistico, Descr., e Hist, de los 



Estados Unidos Mexicanos, 1884, 175 (common names, Mexico). 

 Eupsychortyx nigrogularis Ogilvie-Grant, Cat. Birds Brit. Mus., xxii, 1893, 412, 



part (Tizimin, Buctzotz, Chable, Peto, and Merida, Yucatan). — Salvin and 



Godman, Biol. Centr.-Amer., Aves, iii, 1903, 297, part (Chable, Tizimin, 



Buctzotz, Peto, Merida, and Izamal, Yucatan). — Cole, Bull. Mus. Comp. Zool., 



I, 1906, 115, part (Chichen Itza, Yucatan). 

 [Eupsychortyx] nigrigularis Sharpe, Hand-list, i, 1899, 45, part (Yucatan). 

 Colinus nigrogularis Chapman, Bull. Amer. Mus. Nat. Hist., viii, 1896, 289 



(Chichen Itza; habits; notes). — Nelson, Auk, xv, 1898, 122 (Yucatan). 

 [Colinus] nigrogularis Griscom, Amer. Mus. Nov., No. 379, 1929, 2, in text (crit.). 

 Colinus nigrogularis nigrogularis Peters, Check-list Birds World, ii, 1934, 49. — 



Traylor, Publ. Field Mus. Nat. Hist., zool. ser., xxiv, 1941, 204 (Chichen 



' Twenty specimens. 

 ' Ten Specimens, 



