THE THICK-BILLED PARTRIDGES. l6l 



XIII. THE GORGETED PARTRIDGE. ODONTOPHORUS STROPHIUM. 



Oriyx (^Odo7itophorus) strophium^ Gould, P. Z. S. 1843, p. 134. 



Odontophorii,^ sirop/iium, Gould, Monogr. Odontoph. pt. i. pi. 



31 (1844); Ogiivie-Grant. Cat. B. Brit. Mus, xxii. p. 442 



(1893). 



Adult. — Top of the head deep brown ; nape deep chestnut ; 

 mantle reddish-brown with luhitish shafts ; primary quills uni- 

 form dark brown, the upper-parts otherwise very similar to 

 those of O. guia?iensis ; chin white ; throat black ; fore-part 

 of neck 7c>hite, margined below by a black batid ; general colour 

 of under-parts deep rust-red, paler towards the middle, and all 

 all spotted with white. Total length, 10*5 inches; wing, 5-8 ; 

 tail, 2 "5 ; tarsus, 2 ; middle toe and claw, 2'i. 



It is not known whether the sexes differ in plumage. It- is 

 possible that the above description may apply to the adult 

 female, and that the white shaft-stripes of the mantle may be 

 characteristic of that sex, as in O. guttatus. 



Range. — North-western South America ; the United States of 

 Colombia. 



XIV. THE CARACAS SPOTTED PARTRIDGE. ODONTOPHORUS 



COLOMEIANUS. 



Odontophorus columbiajuts, Gould, P. Z. S. 1850, p. 94; id. 



Monogr. Odontoph. pt. iii. pi. 30 (1850); Ogilvie-Grant, 



Cat. B. Brit. Mus. xxii. p. 442 (1893). 



Adult. — Upper-parts very similar to those of the last species, 



O. strophiuni, but the throat as well as the chin white, 



barred on the sides zvith black, and surrounded by a black 



band widest on the fore-neck ; the general colour of the 



under-parts reddish-brown, the white spots being large and 



well-marked. Total length, 11 inches; wing, 57, tail, 2*5; 



tarsus, I "85 ; middle toe and claw, 2-05. 



It is not known in what particulars, if any, the sexes differ 

 m plumage. 

 Range. — Northern South America ; Venezuela. 



12 M 



