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Show 630 MR. GARROD ON THE ANATOMY OF THE MALEO. [May 21, scaly. The hypopteral tract is but feebly represented, and the termination of the pectoral tract is some distance from the commencement of the abdominal tract, the angle between the direction of the one and the other being about 25°. A strong tract traverses the middle dorsal line of the neck, with a space on each side of it. This does not bifurcate in the scapular region, but ceases abruptly a little below the level of the shoulder-joints, undilated. Over the rump and the inferior scapular region the dorsal tract is diffused and indefinite, ceasing before the nude oil-gland is reached. There is no ephippial space. There are sixteen rectrices. The lumbar tract is only well developed over the tibia-head and for a little way behind it. The humeral tract is not in any way peculiar. I counted nine primary and sixteen secondary remiges, the first and second secondary feathers being considerably shorter than those which follow. Down-feathers are generally distributed. The after-shaft is weak, and the rhachis of each feather is not swollen, except in some of the smallest size. Lower larynx of Megaloccphalon maleo. a. From the front; b. From behind. Visceral Anatomy.-The tongue is simple and fleshy ; a well-developed crop is present, situated between the limbs of the very open fur cula; the proventriculus is zonary, the gizzard powerful; the small intestine is four and a half feet long, the simple cseca 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 Megapodiidse. In its myology the bird is perfectly gallinaceous, the third pectoral muscle being found beneath the m u c h larger second of the same name, the femoro-caudal and semitendinosus with their accessories, the ambiens, gluteus maximus, being all present. The obturator internus 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. |