4. I'Auxis. 487 



Male. Total length 35 inches, wing 15,- tail 13-3, tarsus 4-8, 

 middle toe and claw 3-8. 



Female. Total length 33 inches, wing 14, tail 12, tarsus 4-2, 

 middle toe and claw 3'2. 



Hab. Kio Negro, Rio Branco, extending into British Guiana. 



a. $ ad. sk. River Ivupunuiii, I'lit. Guiana, Sahin-Godman Coll. 



Feb. (//. WMtvhj). 

 h. cf ad. St. Islands of the Kio Negro, Purchased. 



Brazil. 



c. J ad. sk. Marabitanas, Rio Negro, April Salvin-Godman Coll. 



[Natterer). 



d. Skeleton. 



c. Imperfect skeleton. 



3. Mitua salvini. 



Mitua salviui, Reinhardt, Vid. Mcdd. Nat. For. Kjnbenhavn, Jan. 8th, 

 1879, pp. 1-6 ; id. P. Z. S. 1879, p. 108 ; Sdat. P. Z. S. 1879, 

 p. 109; id. Trans. Z. S. x. p. .54y, pi. xcv. (1879) [Interior of 

 Brazil ?]; Reichenow Sr SchaMnv, J.f. O. 1879, p. 310. 



Adult male and female. General colour black glossed with blue ; 

 lower part of the belly, under tail- coverts, and tip of the tail white ; 

 feathers of the crest elongate as in M. mitu ; lores and sides of the 

 head thickly feathered ; bill shaped as in J\I. tonicntosa, but rather 

 larger and entirely red ; feet red. 



Male. Total length 28 inches, wing 14-5, tail (imperfect) 11'7, 

 tarsus 5, middle toe and claw 3'9. 



Female. Total length 28 inches, wing 14-5, tail 12-7, tarsus 4-7, 

 middle toe and claw 3'5. 



Hab. Sarayacu, Ecuador. 



a-d. (J 2 ad. et pull. sk. Sarayacu, Ecuador Salvin-Godman Coll. 

 (Bucklei/). 



4. PAUXIS. 



Tvpe. 



Pauxi, Tenun. Pit/, et Gall. ii. pp. 4-36, 46o, 4G8 (1813), iii. 



pp. 1, 683 (181*5) P. paiLxi. 



Ourax, CinK Reg. An. i. p. 440 (1817) P. pauxi. 



Lophocerus, Sicains. Class. B. ii. p. 353 (1837) P. pauxi. 



I'rax. Rcichenb. Ai\ Syst. Nat. p. xxvi (]85;i) P. pauxi. 



Pauxis, Sclater, Trans. Zool. Soc. ix. p. '285 (1875) P. pauxi. 



A large elevated fig-shaped casque covering the base of the 

 culmen and forehead. 



Feathers of the head and nock short and velvety. 



Tail composed of 12 feathers. 



Tarsus longer than middle toe and claw. 



liavge. Near Caracas, Venezuela ; Santa Martha, U.S. Colombia ; 

 Rio Cassiquiari and Orinoco ; North-east and Central Peru ; 

 ? Cayenne {Buff'on). 



