Ardeid^.] 



OSTEOLOGIA AVIUM. 



[Gruin^;. 



Measurements. 



Tenths. 



Length of humerus 90 



Length of ulna 96 



Length of metacarpus 47 



Length of femur 45 



Length of tibia 115 



Length of metatarsus . . . . .100 

 Length of sternum 75 



Skeleton, Plate II. K. 



Tenths. 



Breadth of posterior margin of sternum 17 

 Breadth of anterior margin of sternum 26 



Depth of keel 21 



Length of head 54 



Breadth of head 15 



Length of pelvis 73 



Breadth of pelvis 28 



Illustrations. 



Pelvis, sternum, palatine bones, and metatarsi, 

 Plate XXXI. fig. 1. 



Balearic a, Briss. 



Pavonina, Linn. 



Cranium similar to Scops, but with a large protuberance on the forehead. 



Sternum narrow ; keel very deep, lower edge arched, anterior edge slightly scolloped 

 out. Manubrial process small, bifid ; the lateral edges of the sternum not contracted 

 behind the ribs ; posterior margin without fissures, and nearly square, with the hinder 

 edges on each side rounded. 



Pelvis large, wider in proportion to its length than in Scops ; ischiadic foramina 

 large ; obturator a mere slit, opened at its hinder terminus, divided from the foramina 

 below the acetabulum by a narrow strip of bone ; the os pubis continued backwards 

 beyond the ischium. 



Bibs of moderate strength ; styliform process broad. 



Furculum very strong, broad horizontally at the junction of the rami, and the inner 

 edges twisted inwards at their junction with the sternum. 



Scapula very strong, gradually tapering to its hinder extremity. 



Leg-bones. Calx rudimentary, the articular eminence for the inner toe placed very 

 far backwards, consequently causing the front of the lower end of the metatarsus to be 

 very convex in front ; a strong keel down the front of the metatarsus. 



Wing-bones. Ulna slightly longer than the humerus. 



Measurements. 



Tenths. 



Length of humerus 83 



Length of ulna 89 



Length of metacarpus 38 



Length of femur ...... 43 



Length of tibia 107 



Length of metatarsus 79 



Length of sternum 50 



192 



Tenths. 



Breadth of posterior margin of sternum 20 

 Breadth of anterior margin of sternum 1 8 



Depth of keel 14 



Length of head 48 



Breadth of head 19 



Length of pelvis 50 



Breadth of pelvis 30 



