CoLTJMBIDJE.] 



OSTEOLOGIA AVIUM. 



[Columbine 



Sternum with the hinder splints bounding the fissures expanded at their tips ; 

 anterior splints also expanded at their tips posteriorly. 



Pelvis with the obturator foramen very narrow. Ischiadic foramen oval, much 

 smaller than in Peristera and Goura, but quite as broad. 



Bibs with the styliform process broad, the former broadest where the process joins 

 them, the latter rounded at their extremities. 



Furculum and remainder of the skeleton as in Goura. 



Measurements. 



Tenths. 



Length of humerus . . . . , 18 



Length of ulna ....... 23 



Length of metacarpus 12 



Length of femur 18 



Length of tibia ....... 22J 



Length of metatarsus 13 



Length of sternum 26 



Breadth of posterior margin of sternum 11 



Tenths- 

 Breadth of anterior margin of sternum 10 



Depth of keel . . 

 Length of head .... 

 Breadth of head . . . 

 Length of pelvis . . . 

 Breadth of pelvis anteriorly 

 Breadth of pelvis posteriorly 



10 

 26 

 9 

 26 

 12 

 16 



Columba, Linn, 



Magnifica, Selby. 



Cranium similar to that of Palumbus, but with the anterior foramen through the 

 orbital septum as large as the one posterior to it ; the intermaxillaries articulated to 

 the sphenoid ; lower mandible curved downwards. 



Sternum with the keel not so deep as in Palumbus, but of similar form. 



Measurements. 



Tenths. 



Breadth of anterior margin of sternum 1 j 



Depth of keel 7 J 



Length of head 26 



Breadth of head 9 



Length of pelvis 33 



Length of humerus 



Tenths. 



, 25 



Length of ulna .29 



Length of metacarpus . . . . 15| 

 Length of femur ...... 21 



Length of tibia . 21 



Length of metatarsus 14 



Length of sternum . . . . . 25 

 Breadth of posterior margin of sternum 1 1 J 



Illustrations, 



Sternum, pelvis, palatine bones, and metatarsi, Plate XX. fig. % 



Besides those already mentioned, I have specimens of C. LivicB, C Capistrata, and 

 C. Alba, none of which differ materially in form from the preceding. 



Breadth of pelvis anteriorly . 

 Breadth of pelvis posteriorly 



13 



