‘ 
1882. ] MANUCODIA ATRA AND OTHER BIRDS. 351 
Fam. Cracip&. 
In the males of the genera Crax, Pauxis, Mitua, and Ortalis the 
trachea forms a loop of variable extent, often extending, particularly 
in the last three genera, to the end of the carina sterni, and then 
turning up a little way on the left side before it returns. In other 
cases it extends only about as far as the anterior end of the carina. 
In the females this loop is altogether absent, or at most the trachea 
presents a slight curve in the neck. 
Species examined. 
Crax globicera. 8,9. 
alector. 3,2. 
selatert. 6,2. 
daubentoni. 3,2. 
alberti. 3,9. 
carunculata. 3,9. 
[The females only of C. globulosa and C. incommoda have yet been 
examined. ‘The trachea is simple.] 
Pauxis galeata. 3,2. 
Mitua tuberosa. 3,2. 
tomentosa. 3,92. 
Ortalis albiventris. 6,9. 
—— garrula. 3. [The 2 according to Humboldt * has the trachea 
simple. | 
—— motmot. 3. [The female has a simple trachea according to 
Latham, who describes this species” under the name of Phasianus 
parraka. | 
In Penelope jacucaca the trachea is convoluted in doth sexes; and 
the same is the case in the male of P. pileata, the condition of the 
female being unknown. 
[In Penelope cristata and P. purpurascens the male has xo loop ; 
and the same is the case in Pipile ewmanensis and P. jacutinga. Only 
females of Pipile cujubi and Nothocraz urumutum have yet been 
examined : these had simple trachee ; and the same is the case in 
both sexes of Aburria carunculata. | 
B. The trachea has a considerable superficial loop in the cervical 
region, anterior to the thoracic muscles, 
Fam. PHASIANIDE. 
Tetrao urogallus. The male only, apparently. 
C. The trachea has a loop entering into, and inclosed by, a bony 
cavity formed by the clavicular symphysis. 
Fam. Numipip. 
The Guinea-fowls of the genus Guttera, as seen in both sexes 
1 Humboldt and Bonpland, ‘Recueil d’observations de Zoologie,’ &e. p. 5. 
Paris, 1811. 
2 Linn. Trans. iy. p. 100 &e. 
Proc. Zoou. Soc.—1882, No. XXIV. 24 
