2l6 ALLEN'S NATURALISTS LIBRARY. 



Adult Male and Female. — General colour black, glossed with 

 blue ; loiver part of abdomen^ under tail-coverts, and tips of tail- 

 feathers, 7vhife. Crest elongate, as in M, initu. 



J/^/^.- Total length, 28 inches; wing, 14-5; tail, 12-7; 

 tarsus, 5 ; middle toe and claw, 3-9. 



Female : Slightly smaller. 



Range. — Sarayacu, Ecuador. 



THE IIELMETED CURASSOWS. GENUS PAUXIS. 



Paitxi, Temm. Pig. et Gall. ii. pp. 456, 465, 468 (1813); iii. 



pp. I, 683 (1815). 

 Pattxis, Sclater, Trans. Z. S. ix. p. 285 (1875). 



Type, P. pauxi (Linn.). 



A large, elevated, egg-shaped casque, or helmet, covering the 

 base of the upper mandible and forehead. 



Feathers of the head and neck short and velvety. 



Lores thickly feathered. 



Tail composed of twelve feathers. 



Leg (metatarsus) longer than the middle toe and claw 



Only one species is known. 



I. THE IIELMETED CURASSOW. PAUXIS PAUXI. 



Crax pauxi, Linn. S. N. i. p. 270 (1766) ; ^'ieill. Gal. Gis. ii. 



p. 5, pi. 200(1825). 

 Crax galeata, Latham, Ind. Orn. ii. p. 624 (1790). 

 Pauxi galeata, Temm. Pig. et. Gall. iii. pp. i. 6S3 (1815); 



Gray, Gen. B. iii. p. 487, pi. cxxii. (1846). 

 Pauxis pauxi, Sclater, Trans. Z. S. ix. p. 285, pi. liii. fig. i. 



(1875); Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 488 



(1893). 

 Pauxis galeata, var. rubra, Sclater, Trans. Z. S. ix. p. 285, pi. 



liii. fig. 2 (1875). 



Adult Male. — General colour black, glossed Vv'ith dark green ; 



