Oriolidje.] 



OSTEOLOGIA AVfUM. 



[Oriolin^e. 



Measurements. 



Tenths. 



Tenths. 



Breadth of posterior margin of sternum 5 



Breadth of anterior margin of sternum 4 



Depth of keel 1 



Length of head 12 



Breadth of head ....... 5 



Length of pelvis 6| 



Breadth of pelvis 5| 



Length of humerus 5J 



Length of ulna 5J 



Length of metacarpus ..... 3 



Length of femur 6 



Length of tibia 10 



Length of metatarsus ..... 8 



Length of sternum 5 



Illustration. 

 Drymophila (Formicivora) loricata, Plate XI. F. 



Oriolus, Linn. 



Inter medius, Temm. 



Type. 



Cranium much depressed anteriorly to the vertex, and slightly hollowed out between 

 the orbits ; edges of the orbits not reflected ; septa with a moderate-sized foramen. 

 Palatine bones rather strong, expanding at their posterior extremities abruptly ; the 

 outer margins elongated backwards in the form of a blunt spine ; interarticular bones 

 rather short ; nostrils rounded. 



Sternum broad on its posterior margin, which is nearly straight; anterior margin 

 two-thirds the width of the posterior ; the fissures on the posterior margin of moderate 

 size, and much contracted posteriorly; keel of moderate depth, slightly arched. 



Pelvis of moderate size, nearly as broad as long ; channel very deep between the 

 ischium and the anterior sacral vertebrse, leaving their dorsal spine apparent ; ischiadic 

 foramen broad, oval, divided into two portions by a small strip of bone, the anterior 

 portion very small ; obturator foramen large. 



Furculum with the rami much compressed laterally at their junction ; furnished with 

 a flattened process pointing backwards. 



Coracoids rather long. 



Metatarsi slightly channeled down the front, without any posterior keel. 



Wing-bones with the ulna longer than the humerus. 



Measurements. 



Tenths. 



Length of humerus . . . . . 11 



Length of ulna 13 



Length of metacarpus 7§ 



Length of femur 10 



Length of tibia 14 



Length of metatarsus 

 Length of sternum 

 134 



9 

 10 



Tenths. 



Breadth of posterior margin of sternum 8 



Breadth of anterior margin of sternum 6 



Depth of keel 2J 



Length of head 18 



Breadth of head 8 



Length of pelvis 11 J 



Breadth of pelvis 9 



