THE GUANS. 241 
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 rounded 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 Gallinze 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, 
I0’5 ; 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. il. p. 55, pl. 73 (1825). 
Ortalida guttata, Wagler, Isis, 1832, p. 1227. 
Penelope adspersa, Vschudi, 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, 7°7; tail, 9; tarsus, 2°3; middle toe 
and claw, 2°3. 
No female examples in which the sex has been ascertained 
I2 R 
