TANAGRIDiE.] 



OSTEOLOGIA AVIUM. 



[Tanagrin^:. 



Measurements. 



Tenths. 



Length of humerus 9 J 



Length of ulna 11 



Length of metacarpus .... 6 



Length of femur 10 



Length of tibia 14 



Length of metatarsus 10 



Length of sternum . . . . . 11 



Tenths. 



Breadth of posterior margin of sternum 8 

 Breadth of anterior margin of sternum 6 

 Depth of keel ....... 3f 



Length of head 13J 



Breadth of head ...... 7 



Length of pelvis 12 



Breadth of pelvis ...... 10 



Tachyphones, Vieill. 



Quadricolor, Vieill. 



Cranium with a slight channel from behind the nostrils to the occiput ; nostrils 

 large, oblong; orbital septum with a large foramen below, and a very much smaller 

 one above it ; occipital protuberance well marked. Palatine bones consisting of a 

 single thin strip of bone on each side, elongated into a sharp spine at about one-fourth 

 their length from the hinder extremity of the lateral strips ; a styliform process extends 

 from them to the spheroid bone twice as broad at its junction with that bone as at the 

 opposite extremity. 



Sternum similar to the Fringillidce. 



Pelvis with three distinct foramina : the ischiadic, which is slightly oval ; the 

 obturator, which is also an elongated oval, anterior to which there is a small rounded 

 foramen immediately under the head of the femur, and divided from the obturator 

 foramen by a small strip of bone. 



Ribs slender styliform process, pointed. 



Furculum and coracoids similar to that of the Fringillidce. 



Scapula with the hinder extremity turning more downwards than among the 

 Fringillidce. 



Remaining bones similar. 



Length of humerus 

 Length of ulna . . 

 Length of metacarpus 

 Length of femur 

 Length of tibia . . 

 Length of metatarsus 

 Length of sternum . 



Measurements. 



Tenths. 



9 



4 



7 

 12 



81 

 11 



Tenths., 



Breadth of posterior margin of sternum 6 



Breadth of anterior margin of sternum 5 



Depth of keel ....... 3 



Length of head ....... 14 



Breadth of head 6 



Length of pelvis 8 J 



Breadth of pelvis ...... 8 



143 



