MELAGRIDiE.] OSTEOLOGIA AVIUM. [MeLAGRINJE, 



manubrial process thin, much flattened, perforated at its base horizontally, with a 

 foramen, which is also continued downwards. 



Pelvis with the process before the acetabulum small ; the os pubis expanded at 

 about half its length, forming a perpendicularly flattened notch ; obturator foramen 

 large, oval ; ischiadic consisting of a small oval foramen under the acetabulum, and 

 small slit between the os pubis and ischium ; the vertebrae on the hinder half of the 

 pelvis well defined. 



Bibs strong, the styliform process short, and turned upwards, 



Furculum strong, with an elongated process at the junction of the rami, the sides of 

 which are parallel, blunt, and rather rounded at the extremity. Scapula much 

 expanded for its posterior half, blunt at end, but narrowed from the centre. 



Leg-bones. Metatarsus with well-marked calcineal process, which diminishes as it 

 descends, destitute of a spur ; supplementary metatarsal much elongated, and twisted 

 on its axis, 



Measurements, 



Tenths. 



Length of humerus 43 



Length of ulna 45 



Length of metacarpus 22 



Length of femur .45 



Length of tibia 65 



Length of metatarsus 40 



Length of sternum 53 



Tenths. 



"Breadth of posterior margin of sternum 15 

 Breadth of anterior margin of sternum 1 7 



Depth of keel 17 



Length of head 38 



Breadth of head }5 



Length of pelvis 49 



Breadth of pelvis ...... 29 



Illustrations. 

 Skeleton, Plate II. H. f Sternum and pelvis, Plate XXVIII. 



Pauxi, Temm. 



Mitu, Linn. 



I have only the sternal portion of this bird. The sternum is similar to the last, but 

 without the bifid extremities to the inner splints ; the ribs are without any styliform 

 process. The scapula and furculum are also similar. 

 Melagms, Linn, 



Gallopavo, Linn. 



Cranium with the nostrils large, oval ; orbital septum with two foramina, one— an 

 elongated one — situated at the top, and the other posteriorly. Palatine bones similar 

 to Crax, but not widened so much ; occipital ridge strongly marked. 



Sternum similar to Crax, but without the foramen in the manubrial process, which 

 is much stronger than in Crax, and much broader at the base. 



171 



