PSITTACTD^E.] 



OSTEOLOaiA AVIUM. 



[PSITTACTM:. 



Measurements. 



Tenths. 



Length of humerus 19 



Length of ulna ....... 23 



Length of metacarpus 11^ 



Length of femur 16 



Length of tibia 21 



Length of metatarsus ..... 7^- 



Length of sternum 20 



Tenths. 

 Breadth of posterior margin of sternum 12 

 Breadth of anterior margin of sternum 1 



Depth of keel 7 



Length of head 20 



Breadth of head 10 



Length of pelvis 22 



Breadth of pelvis 10| 



Cheysotis, Sw. 



Amazonicus, Gm. 

 Similar to ochrocephalus, in the British Museum. 



Measurements. 



Tenths. 



Length of humerus 22 



Length of ulna 28 



Length of metacarpus 13 



Length of femur 19 



Length of tibia 26 



Length of metatarsus 8 



Length of sternum 25 



Tenths. 



Breadth of posterior margin of sternum 1 6 



Breadth of anterior margin of sternum 12 



Depth of keel 8 



Length of head 26 



Breadth of head 15 



Length of pelvis . . . . . . . 27 



Breadth of pelvis . ....... 13 



Cheysotis, Sw. 



Brasiliensis, Linn. 

 Similar to ochrocephalus, but with the bony ring round the orbits complete. 



Measurements, 



Tenths. 



Length of humerus . . . ... 22 



Length of ulna 27 



Length of metacarpus 14 



Length of femur 17 



Length of tibia 24 



Length of metatarsus 7 



Length of sternum 24 



Tenths. 

 Breadth of posterior margin of sternum 14 

 Breadth of anterior margin of sternum 10 



Depth of keel 7 



Length of head 25 



Breadth of head 12^ 



Length of pelvis 24 



Breadth of pelvis 14 



VOL. I. 



Illustration. 

 Skeleton, Plate I. C. 

 L 



69 



