250 LLOYD’S NATURAL HISTORY. 
Ortalis erythroptera, Ogilvie-Grant, Cat. B. Brit. Mus. xxii. 
p. 516 (1893). 
Adult.—Easily distinguished from the two preceding species 
by having the four outer pairs of tail-feathers zdely tipped 
with dark chestnut. From O. garrula, which it otherwise 
resembles, it may be further distinguished by having the top 
of the head and nape brighter chestnut, and the wader taitl- 
coverts of a paler chestnut colour. ‘Total length, 24 inches; 
wing, 9°2; tail, 10°6; tarsus, 3°1 ; middle toe and claw, 3°1. 
Range.—North-western South America ; Babahoyo, Guaya- 
quil, and Palmal, Western Ecuador. ? Cumana, Venezuela. 
THE PIPING GUANS. GENUS PIPILE. 
Pipile, Bonap, C. R. xlii. p. 877 (1856). 
Type, P. cumanensis (Jacquin). 
The width of the upper mandible greater than the height. 
Sexes similar in plumage. A well-developed crest of pointed 
feathers. A large patch round the eyes naked. Front of the 
neck almost naked, with a median wattle. 
Tail composed of /ve/ve feathers, rather long and rounded, 
the outer pair being distinctly shorter than the middle pair. 
Two outer primary flight/seathers with the last third of the 
inner web deeply excised. The first much shorter than the 
second, which is about equal to the tenth; sixth slightly the 
longest. 
Tarsus shorter than the middle toe and claw. 
I. THE WHITE-HEADED PIPING GUAN. PIPILE CUMANENSIS. 
Crax cumanensis, Jacquin, Beytr. p. 25, pl. 10 (1784). 
Crax pipile, Jacquin, Beytr. p. 26, pl. 11 (1784). 
Penelope leucolophos, Merrem, Av. Icones et Descr. il. pp. 43, 
A4. pl. 12 (1786) ; id) Beytr. Vox) i: pp. 46, 475 plane 
(1786). 
