Laniidje.] 



OSTEOLOGIA AVIUM. 



[Thamnophilin^e. 



whole of the vertebrae to which they are anchylored can be seen from the upper sur- 

 face ; ischiadic foramen very large, oval. 



Sternum nearly as broad anteriorly as posteriorly ; posterior fissures larger than in 



Lanius, and the keel not so deep. 



Metatarsi long. 



Ulna shorter than the humerus. Metacarpus more than half the length of the ulna. 

 The upper five vertebras next to the Atlas with the dorsal spines apparent. 



Length of humerus 

 Length of ulna . . 

 Length of metacarpus 

 Length of femur 

 Length of tibia . . 

 Length of metatarsus 

 Length of sternum 



Measurements. 



Tenths. Tenths. 



13 Breadth of posterior margin of sternum 7 J 



12J Breadth of anterior margin of sternum 7 



71 Depth of keel 3 



16 J Length of head 27 



26 Breadth of head 10 



19 Length of pelvis 17 



12J Breadth of pelvis 9 



Thamnophilus, Vieill. 



Severus, Licht. 

 I have a specimen of the above, and also Meleagris and Doliatus, Licht, neither of 

 which differ, except in size, from Undulatus. 



Vang a, Vieill. 



Nigrogularis, Gould. 



Cranium rather flattened on the vertex; palatine bones bifurcate at their hinder 

 extremities; impression for the massiter muscle not so large as in Thamnophilus; 

 orbital septum perforated with a large foramen, but not so rudimental as in Tham- 

 nophilus. 



Sternum broader posteriorly than anteriorly; keel shallow; posterior fissures of 

 moderate size. 



Pelvis nearly as broad as long ; vertebras scarcely traceable on the upper surface ; 

 obturator foramen very large ; ischiadic foramen oval, very wide. 



Ulna much longer than humerus ; metacarpus long. 



Metatarsus not so long in proportion as in Thamnophilus. 

 128 



