INTRODUCTION. 
21 
The members of the present section, in fact, differ so much in their general contour from all the other 
members of the family, as to present the idea of their leading off to some other group of the Gallinacece , 
apparently to the Guans and Curassows. 
The species are :— 
22. Dendrortyx macrounis 
23. -leucophrys 
24. -barbatus . 
The sexes are alike in plumage, and merely differ in the somewhat smaller size of the females. 
PI. XX. 
PI. XXI. 
PI. XXII. 
For the seventh section I retain M. Vieillot’s name of 
ODONTOPHORUS, 
WITH THE FOLLOWING CHARACTERS 
Rostrum forte, lateraliter compressum, culmine valde arcuato, et ad apicem deorsum curvato : mandibulA inferiore 
recta, distinct^ bidentatA utrinque apicem versus, tomiis incurvatis et peracutis; nares grandes, membrana 
obtectse et circumdatse; caput cristatum; orbitis nudis; ala concavie, primariis rigidis, prima brevissimA, 
quinta et sex til cseteris praestantibus; cautla admodilm brevis, concava, rotundata, et e plumis duodecim mol- 
libus et laxis confecta; tarsi elongati, robusti, et fortiter reticulati; digitis anterioribus, membranA ad basim 
conjunctis ; omnibus elongatis, prpesertim intermedin ; digito posteriore brevi, et debili ; unguibus elongatis, 
fere rectis, et a cutis. 
Bill robust, compressed laterally, and with the culmen very much arched and bent downward at the point; under 
mandible straight, and with two distinct dentations on each side near the point; t.omia curved inwards and 
very sharp; nostrils large, covered and bordered with a membrane; head crested; orbits naked; wings very 
concave; primaries rigid, the first the shortest, and the fifth and sixth the longest; tail very short, concave, 
rounded at the end, and composed of twelve soft and unresisting feathers ; tarsi lengthened, robust, strongly 
reticulated and spurless; anterior toes united at the base by a membrane, and very long, particularly the 
middle one ; the inner one the shortest; posterior toe short and feeble ; nails lengthened, nearly straight, and 
sharp at the point. 
Of this particular form, eleven species are now known, all of which, with the exception of 0. strophium, 
0 . specwsus, and 0. Colttmbianus, have, in addition to the characters given above, the outer webs of the 
