244 Lloyd's natural history. 



Tschudi, who met with this species in Peru, gives the fol- 

 lowing note regarding its habits : — *' This species lives in flocks 

 in the more thinly-wooded parts of most of the Peruvian 

 Montanas. The Indians call it ' Haccha-Nualpa ' (Woodcock). 

 After sunset a number of these birds wdll collect for the night 

 on a large tree and give vent to a piercing shrieking cry, which 

 is fairly expressed by the syllables ' Ven-aca.' Before sunrise 

 this cry is repeated, and the flock disperses for the day." 



d^. Third pair of fail-feathers widely tipped with chestnut on both 

 webs; white eyebrow-stripes stroftgly marked and continued 

 backwards down the sides of the neck. 



XI. THE WHITE-EYEBROWED GUAN. ORTALIS SUPERCILIARIS. 



Ortalida superciliaris^ G. R. Gray, List. Gallinse Brit. Mus. 



p. lo (1867). 

 Ortalis super ciliaris^ Ogilvie-Grant Cat. B. Brit. Mus. xxii. 



p. 511(1893). 



Adult Male. — Easily distinguished from O. guttata and the 

 preceding species by the wide whitish eyebrow-stripes^ the four 

 outer pairs of tail-feathers tipped with chestnut, the third pair 

 being almost as widely tipped on both webs as the fourth. 

 Total length, 17 inches; wing, 68; tail, 7-2; tarsus, i*8; 

 middle toe and claw, i"8. 



Only the type specimen, a male, is known. 



Range. — South America. The exact locality is not known, 

 b. Extremities of the outer pairs of tail-feathers white or buff. 



XII. THE GREY-HEADED GUAN. ORTALIS POLIOCEPHALA. 



Penelope poliocephala^ Wagler, I sis, 1830, p. in2. 

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

 Ortalis poliocephala^ Ogilvie-Grant, Cat. B. Brit. Mus. xxii. 

 p. 511 (1893). 



Adult Male and Female. — Top of the head and neck dark grey; 



