COLUMBID^.] 



OSTEOLOGIA AVIUM, 



[Peristerin^. 



elongated, so as nearly to obliterate the septum, a small bony ring and a small 

 strip of bone dividing the foramina only being left. Palatine bones similar to 

 Goura coronata. Near the centre of the inner edge of the interarticular bone a rounded 

 protuberance projects, and is articulated with a similar protuberance projecting from 

 the sphenoid. In Goura the interarticular bones are somewhat expanded for their 

 anterior half, but have no similar projection, Kemaining bones of the head similar to 

 Goura. 



Sternum with the strips bounding the posterior fissure expanded at their tips ; the 

 strips bounding the large anterior fissure, instead of being expanded at their tips, as in 

 Goura, are more elongated and pointed, with the terminal portion bent inwards. 

 Manubrial process small, but longer than in Goura. 



Pelvis short, very broad in proportion to its length, particularly in that portion 

 before the acetabulum ; in shape similar to Goura, as is also the remaining part of the 

 skeleton. 



Measurements. 



Tenths. 



Length of humerus ..... 15 



Length of ulna 17J 



Length of metacarpus 10 



Length of femur .15 



Length of tibia ....... 22 



Length of metatarsus 12 



Length of sternum 25 



Breadth of posterior margin of] 

 sternum, including lateral strips J 



15 



Tenths. 



Breadth of anterior margin of sternum 8 



Depth of keel 9 



Length of head 19 



Breadth of head 6 



Length of pelvis 22 



Breadth of pelvis anteriorly . . . 10 



Breadth of pelvis posteriorly . . 11 J 



Champelia, Sw. 



Passerina, Linn. 



Does not differ in structure in any respect from the preceding genus, but is much 

 smaller in size. 



Columba, Linn. 



Palumbus, Linn. 

 Cranium similar in shape to Goura, but with a slightly more protruding occiput 

 Orbital septum with three foramina, — one rounded, situated at lower part, one at the 

 top over it, and another smaller one anterior to both ; occipital protuberance and ridge 

 both more prominent than in Goura. Interarticular bones with a process on their 

 internal edges, but not reaching quite to the sphenoid bone. 



z 157 



