ON THE ANATOMY OF THE MALEO. 453 
and the rhachis of each feather is not swollen, except in some of the 
smallest size. 
5. a. 
Lower larynx of Megacephalon maleo. 
a. From the front; 5. From behind. 
Visceral Anatomy.—The tongue is simple and fleshy; a well-de- 
veloped crop is present, situated between the limbs of the very open 
furcula ; the proventriculus is zonary, the gizzard powerful; the small 
intestine is four and a half feet long, the simple ceca five and a half 
inches, and the large intestine five inches in length. 
: There is only one carotid artery, the left, as in all the Megapodide. 
In its myology the bird is perfectly gallinaceous, the third pectoral 
muscle being found beneath the much larger second of the same name, 
the femoro-caudal and semitendinosus with their accessories, the 
ambiens, and gluteus maximus, being all present. The obturator in- 
ternus is triangular; a vinculum joins the two deep flexors of the foot, 
and the biceps of the arm sends a fasciculus to the patagium. The 
expansor secundariorum muscle ends by running to the scapula at the 
same time that it sends a slip of tendon to the first rib. 
The lower end of the trachea is represented in the accompanying Page 631. ° 
figures, from the front and from behind. It differs in arrangement 
from all other of the Galline with which I am acquainted. To 
the terminal tracheal three-way ring is fused the first bronchial semi- 
ring by its extremities, its bowed free portion being upturned with its 
limbs almost perpendicular. In the middle line posteriorly the pen- 
ultimate tracheal ring fuses with the what may be compound three- 
way piece, in the posterior aspect of which a small upward-directed 
tongue of cartilage developes from its upper border. The sterno- 
tracheal muscles are minute and the intrinsic tracheal muscles form 
thin broad sheets which almost cover the tube and end on the outer 
surface of the first bronchial semiring and in the semicartilaginous 
large membrane between it and the unmodified following semiring. 
