GEOTRYGOX. — Ol'TSTHUCOMUS. 51 



E.ctraUmital Range. Brazil, Ecuador, Peru^ Bolivia, Paraonav. 



Habits. Schomburok (Reis. Guian. iii. p. 744) says that this 

 bird is very similar in habits to Leptoptila rnfaxilla (p. 48) and 

 lives singly or in pairs in the depths of thick Avoods, where it 

 I'eeds entirely on the ground. He did not find it nestin"-. 



Order OPISTHOCOMIFORMES. 



Fandly OPISTHOCOMID.E. 



This single species, which constitutes the Order, resembles more 

 or less the game-bird group, having a similar bill, but has a very 

 long crest, long wings, very long tail, and strong feet with long- 

 toes. The chick has highly developed claws on the wings, as 

 shown in Fig. 12, p. 52. 



Genus OPISTHOCOMUS Illig. 



Opi.-ithocomus llliger, Prodr. Svst. ]Mamui. et Av. p. 239, ISSI. T\iio 

 O. hoatziii (P. L. S. Mull.'). 



Distinguished by the same characters as those of the family. 

 3o. Opisthocomus hoazin. 



HOATZIN. 



Amer. i. p. 21, no. 212, 1912. 

 Opisthocomus cristatus (Gmcl.), Seliomb. lleis. Guian. iii. ]i. 712, 



Q 



V^UV,l». II, lIMr", |.»T'7«T, I/, »J i tj \ IJl. I \Jl\. \Z XtlVl^lIj IVi. Ill illllVIIIl \ — J 



p. ;iO:J. ISSS f Abary Creek) ; id. Ibis, 1S90, p. 327 (Abary Ci 

 and Berbifu Jtivur: notes on tlie Jialtits). 



"Anna''; "Ilanna"; " Canj('' or Stinking JMicasant " : 

 "Govrrnor Battenberg's Turkeys " {(hwlr/i) : ^'Crested Ccc-ilia " 

 ( /iroan), 



i: 2 



