THE GUANS. i^i 



Adult. — Very closely allied to O. albiventer^ but the top of 

 the head is more olive, and the feathers of the sides of the 

 face and upper parts of the neck are rotmded and uniform olive- 

 brown ; belly brownish-white. 



Range. — South-eastern South America. Provinces of Rio 

 Grande do Sul and (?) Santa Catharina. 



IX. THE WHITE-FRONTED GUAN. ORTALIS CARACCO. 



Ortalida caracco, Wagler, Isis, 1832, p. 1227. 



Ortalida adspersa, G. R. Gray, List Gallinse Brit. Mus. p. 13 



(1867). 

 Ortalis caracco^ Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 509 



(1893)- 



Adult. — Top of the head dark grey; front of the head whitish; 

 feathers of the chest and breast rather narrowly margined all 

 round with whitish. Total length, 22 inches; wing, 8*8 ; tail, 

 io'5; tarsus, 2*4; middle toe and claw, 2*4. 



No specimens have been examined in which the sex has been 

 ascertained. 



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

 Colombia and Upper Amazonia. 



X. SPIX'S WHITE-FRONTED GUAN. ORTALIS GUTTATA. 



Penelope guttata, Spix, Av. Bras. ii. p. 55, pi. 73 (1825). 

 Ortalida guttata, Wagler, Isis, 1832, p. 1227. 

 Pe7ielope adspersa, Tschudi, Wiegm. Arch. 1843, p. 386. 

 Ortalis guttata^ Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 510 

 (1893). 



Adult Male. — Closely allied to O. caracco, but only the fore- 

 head is grey ; the whitish margins to the chest-feathers are 

 narrower, and the measurements are somewhat less. Total 

 length, 19 inches; wing, 77; tail, 9; tarsus, 23; middle toe 

 and claw, 2*3. 



No female examples in which the sex has been ascertained 

 12 R 



