S0^2 



TETRAONID^. 



GENUS CCXCII.— CRYPTONYX, Temmiuck, 

 Generic character: vide Steph. v. xi. p. 252. 



GENUS CCXCIII.— ODONTOPHORUS, Vieillot. TOCRO. 



Rostrum basi glabrum, supra 

 convexum ; lateribus com- 

 pressis: mandibida inferior 

 versus apicera bidentata. 



Orhitce et lora' nudae. 

 Cauda brevis, deflexa; rec- 

 tricibus duodecim. 



Beak glabrous at the base, 

 convex above, with its 

 sides compressed ; the 

 lo-icer mandible bidentate 

 towards the tip. 



Orbits and lores naked. 



Tail short, deflexed; >vith 

 twelve feathers. 



{Vide Steph. v. xi. p. 420.) 



Sp. 1. Od. guianensis. 



Od. rufo-fuscus nigro maculatus et varius, guld cinered, per oculos 



vittdjulvd ; remigibus extus macidis rujis. 

 Red-brown Tocro spotted and varied with black, with the throat 



cinereous ; a fulvous stripe through the eyes ; the quills on the 



outside with red spots. 

 Tetrao Guianensis. Gmel. Syst. Nat. i. 7Q7- — Perdix guianensis. 



Lath. Ind, Orn. ii. p. 650. — Le Tocro, ou Perdrix de la Guiana. 



Buff. Hist. Nat. Ois. v. 'w. p. 513. — Guiana Partridge. Lath. 



Gen. Syn. v. iv.p. 776. 



Inhabits Guiana. Length eleven inches : beak 

 brown : round the eyes red warty excrescences : 

 through the eye, and behind it, a pale rufous streak : 

 the upper part of the plumage rufous-brown : the ex- 

 terior webs of the scapulars mottled with ash colour : 

 wing-coverts mottled with brownish-ash colour : the 

 back itself cinereous-brown, marked with blackish 

 dots : the throat cinereous : breast cinereous-brown, 



