PHASIANIDiE.] OSTEOLOGIA AVIUM. [PAVONINiE. 



Measurements. 



Tenths. 



Length of humerus 12 



Length of ulna 12 



Length of metacarpus ...... 5 



Length of femur 15 



Length of tibia ....... 22 



Length of metatarsus 12 



Length of sternum 20 



Tenths. 



Breadth of posterior margin of sternum 6 J 

 Breadth of anterior margin of sternum 6 



Depth of keel 6 J 



Length of head 14 



Breadth of head 7 



Length of pelvis 18 



Breadth of pelvis 8 



Illustrations. 

 Palatine bones, sternum, and pelvis, Plate XXII. fig. 1 . 



Pavo, Linn. 



Muticus, Linn. 



Cranium small in proportion to the size of the rest of the skeleton. Palatine bones 

 laterally flattened ; interarticular bones small in the middle, and expanded at the two 

 extremities. Orbital septum with one foramen ; nostrils oval. 



Sternum with a very deep keel, much excavated in front ; manubrial process very 

 large, and perpendicularly flattened ; sternal posterior fissures of about a proportional 

 size in comparison with other gallinaceous birds ; the extremities of the splints border- 

 ing the fissures very much expanded. 



Pelvis precisely similar to Perdicc ; ischiadic foramen very large and oval ; obturator 

 anteriorly oval, with a slight slit proceeding backwards, between the ischium and 

 os pubis. Pelvis much shorter, in proportion to its width, than in Perdix\ the 

 divisions on the vertebrae on the upper surface very distinct ; a strong spine projects 

 from the end of the ilium forwards before the acetabulum. 



Bibs very strong ; styliform process broader in the two anterior true ribs than in the 

 others. 



Furculum very short, flattened for two-thirds of its length, and gradually becoming 

 more rounded to the junction of the branches ; process at the junction triangular, the 

 broadest end pointing towards the keel and turned backwards, as among the Perdicince. 



Coracoids very strong, somewhat triangular 



Leg- bones. Metatarsus with a strong calcineal process, armed with a spur and 

 anchylosed to it to nearly its junction with the tibia, where there is an elongated 

 fissure between the two bones ; supplemental metatarsus twisted on its axis, like 

 that of many other gallinaceous birds. 

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