THE LONC-'IAILED AMERICAN PARTRIDGES. II3 



Tetrao marmorata^ La Llavc, Reg. Trim. i. p. 144 (183 1) ; id. 



La Nat. Mex. vii. App. p. 65 (1884). 

 Dendrortyx viacrouruSy Gould, Monogr. Odontoph. pt. i. pi. 2c 



(1844); Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 392 



(1893)- 



Adult Male — Chin and throat black (feathers of the chin 

 sometimes with whitish centres) ; short eyebrow-stripes and 

 band bordering sides of throat white ; neck, mantle, chest, and 

 sides chestnut broadly edged with grey ; lower back and rump 

 dull olive-brown finely mottled with black ; wing-coverts and 

 shoulder- feathers mostly olive-grey, with irregular black and 

 white spots and markings ; breast and middle of belly dirty- 

 white or brownish-olive ; naked space round the eye coral-red. 

 Total length, 15 inches; wing, 6- 2,; tail, 6-5 ; tarsus, 2; middle 

 toe and claw, 2*1. 



Adult Female. — Smaller. Total length, 13-3 inches; wing, 

 5-9; tail, 5"3; tarsus, 175; middle toe and claw, i-8. 



Range. — Southern Mexico; the highlands of Colima, Guer- 

 rero, and Oaxaca. 



II. THE BEARDED LONG-TAILED PARTRIDGE. DENDRORTYX 

 BARBATUS. 



Dendrortyx harhatns, Licht.; Gould, Monogr. Odontoph. pt. ii. 



pi. 22 (1846) ; Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 



393 (1893)- 

 Adult. — Easily distinguished from D, macrourus by having 

 the chin and throat gi^ey ; eyebrow-stripes and cheeks dark 

 grey ; chest, breast, and sides of belly light chestnut. Naked 

 skin round the eye red. Total length, 13*5 inches ; wing, 6*2; 

 tail, 4*8; tarsus, 1-95 ; middle toe and claw, 2-1. 



Eange. — South-east Mexico; the vicinity of Jalapa, Vera 

 Cruz. 



12 I 



