152 ALLEN S NATURALISTS LIBRARY. 



For convenience the fourteen forms may be divided into two 

 groups : — 



A. Chest and breast not spotted with white (species 1-8, 

 pp. 152-158). 



B. Chest and breast spotted with white (species 9-14, pp. 

 158-161). 



A. Chest and breast not spotted with ivhite, 



L THE GUIANA PARTRIDGE. ODONTOPHORUS GUIANENSIS. 



Tetrao gmanensts, Gmel. S. N. i. pt. ii. p. 767 (1788). 

 Ferdix deniata, Temm. Pig. et Gall. iii. pp. 419, 734 (181 5). 

 Perdix rufi?ia, Spix, Av. Sp. Nov. ii. p. 60, pi. 766 (1825). 

 Odontophorus rufus, Vieillot, Gal. Gis. ii. p. 38, pi. 211 



(1825). 

 Odontophorus guianensis, Gould, Monogr. Odontoph. pt. i. pi. 

 25 (1844); Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 432 



(1893). 



Adult Male and Female. — Crown mostly deep chestnut ; nape 

 and mantle grey, finely mottled with black ; lower back and 

 rump reddish-brown, more or less dotted with black ; wings 

 rufous, blotched and marked with black ; outer webs of primary 

 quills barred with buff ; cheeks^ chin, and sides of throat dark 

 chest7mt ; m\dd\Q of throat grey; general colour of chest 

 and rest of under-parts brownish-buff, indistinctly barred with 

 dusky. Naked skin round eye vermilion. 



Adult Male. — Total length, 11-5 inches; wing, 5-9; tail, 28; 

 tarsus, I "6 ; middle toe and claw, i"8. 



Adult Female. — Total length, 10 inches ; wing, 5*4; tail, 2*3; 

 tarsus, i'5 ; middle toe and claw, i-6. 



Habits.— This species frequents the forests, and is never 

 seen in the savannas or open country. It is a shy bird, and 

 usually met with singly or in pairs, never in coveys, and, like 

 he rest of its kind, runs with great speed, but when flushed be- 



