TURDIDJE.] 



OSTEOLOGIA AVIUM. 



[TlMALINiE a 



DoNACOBIUS, Sw, 



Atracapillus, Linn, 

 Cranium with a large foramen in the orbital septa. 

 Pelvis and sternum smaller ; metatarsus longer. 



Wings very short ; humerus as long as ulna. In other respects similar to Turdus, 



Measurements. 



Length of humerus 

 Length of ulna . . 

 Length of metacarpus 

 Length of femur 

 Length of tibia . . 

 Length of metatarsus 

 Length of sternum 



Tenths. 



9 

 9 



H 

 H 



16 

 121 



Tenths. 



Breadth of posterior margin of sternum 5 J 

 Breadth of anterior margin of sternum 4 J 



2 



20 



7 



10 



6 



Depth of keel . 

 Length of head 

 Breadth of head 

 Length of pelvis 

 Breadth of pelvis 



Hydrobata, Vieill. 



Cinclus, Linn, 



This bird does not differ from Turdus, except in having the posterior margin of the 

 sternum nearly straight, and in the fissures being smaller. 



Measurements. 



Tenths. 



Length of humerus ..... 9 



Length of ulna ....... 10 



Length of metacarpus 6 J 



Length of femur 8J 



Length of tibia 15 



Length of metatarsus 12 



Length of sternum ...... 10 



Tenths- 

 Breadth of posterior margin of sternum, 9 

 Breadth of anterior margin of sternum 6 

 Depth of keel ....... 3 



Length of head ....... 16 



Breadth of head 6 



Length of pelvis . 14 



Breadth of pelvis 8| 



Garrulax, Less. 



Rufifrons, Less. 



Cranium "with a very large foramen in the orbital septum. Palatine bones very 

 similar to Turdus, but not extending so far backwards. Masseter impression very 

 slight. 



Sternum with a very narrow keel, and with the fissures on the posterior margin very 

 slight ; as wide anteriorly as posteriorly. 



Pelvis broad ; ischiadic and obturator foramina very large. In other respects similar 

 to Turdus. 



Vina longer than humerus. 



131 



