BUCERIDJE.] OSTEOLOGIA AVIUM. [BUCERINJS. 



Bucbeos, Linn. 



Panini, Bodd. 

 I have the head-, wing-, leg-, and palatine bones of this bird ; they take precisely the 

 same form as the larger species. 



Illustration. 

 Palatine bones, Plate XII. fig. 11. 



Buceros, Linn. 



Elatus, Temm. 



This bird has been made into a new genus by the Prince Bonaparte, under the name 

 of Ceratogymna ; it is, however, of precisely the same form as the other large species. 



Bucorvus, Less. 



Abyssinicus, Gm. 

 General form of the skeleton very similar to Buceros plicatus and the larger species 

 of that genus, but has the keel of the sternum more arched, the metatarsi with only 

 a very slight channel in front, which does not extend for above half their length, 

 and the vertebrae of enormous size and strength ; — I believe nearly, if not quite, the 

 strongest among birds, particularly in the cervical region, some of them being more 

 than an inch and a half in diameter, and only three-quarters long ; the dorsal processes 

 are not highly developed, except in the three upper ones. 



Measurements. 



Tenths. 

 Length of humerus 55 



Length of ulna .76 



Length of metacarpus 27 



Length of femur 40 



Length of tibia ....... 68 



Length of metatarsus 50 



Length of sternum . . . . . . 45 



Tenths. 

 Breadth of posterior margin of sternum 16 

 Breadth of anterior margin of sternum 23 



Depth of keel .11 



Length of head 75 



Breadth of head 25 



Length of pelvis 48 



Breadth of pelvis 25 



Illustrations. 



Skeleton, Plate VI. B. 



Sternum, Plate VIII. fig. 12. 



■ 



63 



