432 PHASIANID^. 



1. Odontophorus guianensis. 



Le Tocro ou Perdrix de la Guyane, Buff. Hist. Nat. Ois. iv. p. 513 



(1778). 

 Guiana Partridge, Lalh. Gen. Si/n. ii. pt. ii. p. 776 (1783) ; id. Gen. 



Hist. viii. p. 323 (1823). 

 Tetrao gaiianensis, Gfii. S. N. i. pt. ii. p. 767 (1788). 

 Perdix guianensis, Lath. hid. Orn. ii. p. 050 (1790) ; Bonn. Tahl. 



Encifcl. Meth. i. p. 216 (1791). 

 Perdix dentata, Temm. Pig. et Gall. iii. pp. 419, 734 (1815). 

 Perdix rutina, Spiv, Av. Sp. Nov. ii. p. 60, pi. 76 6 (1825) [Fore.st3 



of the Amazon^. 

 Odontopliorus ruius, Vieill. Gal. Ois. ii. p. 38, pi. 211 (1825). 

 Odontophorus guianensis, Gould, Motwqr. Odont. pt. i. pi. 23 (1844) ; 



Gray, List of B. pt. iii. Gall. p. 43 (1844) ; Cah. in Srhomb. Brit. 



Guiana, pt.' iii. p. 747 (1848) ; Sclat. ^ Salvin, P. Z. 8. 1867, 



p. 591 [Capim K.] ; Gray, List Gallince Brit. Mus. p. 71 (1867) ; id. 



Hand-l. B. ii. p. 271 (1870) ; v. Pelz. Orn. Bras. p. 289 (1870) ; 



Broicn, Brit. Guiana, p. 371 (1876) ; Salvin, Ibis, 1886, p. 175 



[Bartica Grove, Merume Mts., Camacusa] ; Hiker ^ Chapman, 



Auk, viii. p. 162 (1891) [Sautarem, Brazil]. 



Adult male and female. General colour of the top of the head 

 deep chestnut, with irregular marks and dots of paler rufous and 

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

 back and rump sandy rufous-brown, shading into darker rufous on 

 the upper tail-coverts and all dotted with black, but in very old 

 specimens these black dots are almost obsolete ; wing-coverts, 

 scaptdars, and outer secondaries rufous, blotched, especially towards 

 the tip of the inner web, with black and all irregularly marked and 

 mottled with the same colour — some of the scapulars have an 

 irregular dirty white or grey band on the outer web next the shaft 

 and the longer scapulars and outer secondaries have the inner web 

 edged with buff; cjuills dark brown, irregularly barred on the outer 

 web with buff ; chin, cheeks, and sides of throat dark chestnut ; 

 ear-coverts buff; middle of throat and fore part of neck greyish; 

 chest and rest of imderparts pnler or darker rufous-buff, more or 

 less barred and marked with dusky on the chest, sides, and flanks*; 

 tail dark rufous-brown with indistinct bars. Bill bluish black ; iris 

 hazel ; naked skin round the eye vermilion ; legs and toes bluish 

 lead. 



Male. Total length 11 '5 inches, wing 5'9, tail 2-8, tarsus 1"6, 

 middle toe and claw I'S. 



Female. Total length 10 inches, wing 5"4, tail 2-3, tarsus 1'5, 

 middle toe and claw 1'6. 



Hah. British Guiana and Lower Amazons. 



* In some specimens these barrings are much heavier and more marked 

 than in others ; but, apparently, this is not due to age, and in what appears to 

 be a perfectly adult male specimen from Camacusa, British Guiana, the whole 

 of the underparts are barred with black, and in general appearance the bird 

 closely resembles specimens of 0. marmoratus, which appear to us to be barely 

 subspecifically distinct, but more material is necessary to decide this question. 



