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EXPLANATION OF THE PLATES. 
Tas. IX. 
Sternum and Trachea of the Crested Pintado ( Numida cristata 
Linn.). 
a. Portion of the tube of the trachea, passing downward to 
the pouch and afterwards to b. the bone of divarication 
from which the bronchiz arise. 
c. c. The branches of the furcula. d. The pouch or socket. 
e. The head of the clavicle. f. The junction of the scapula 
with the clavicle, forming a cavity to receive the head 
of the humerus. g.g. The scapulæ. 
h. Projecting anterior portion of the sternum. i.i. i.i. The 
ribs. 
k.k. Membranous portion of the sternum, common to the Gal- 
IRURE oo 5 
l.l. The keel or crest. 
Tas. X. 
Sternum and Trachea of the Demoiselle (Ardea Virgo Linn.). 
a. À small portion of the keel removed, to show the depth of 
the insertion. — 
Tas. XI. 
- Sternum and Trachea of the Stanley Crane (Anthropoides Stan- 
leyanus Vigors). Male. .— 
Tan. XII : 
Sternum and Trachea of the Black Swan (Anas atrata Linn.). 
a. 'The depression in the tube, at the part preceding the bone 
of divarication. . 
Tas. 
