PSITTACID^E.] 



OSTEOLOGIA AVIUM. 



[PEZOPOEINiE. 



Pezoporus, III. 



Formosus, Lath. 

 Cranium similar to Psittacula. Sternum with the keel deeper. Metatarsus much 

 longer in proportion to the tibia ; the remaining bones similar ; ulna and humerus of 



the same length. 



Measurements. 



Tenths. 



Length of humerus 11 



Length of ulna 11 



Length of metacarpus 8 



Length of femur 11 



Length of tibia 16 



Length of metatarsus 9 



Length of sternum 14 



Tenths. 



Breadth of posterior margin of sternum 8 

 Breadth of anterior margin of sternum 5 



Depth of keel 5 



Length of head 13^ 



Breadth of head 7 



Length of pelvis 13 



Breadth of pelvis ...... 6 



Illustrations. 

 Sternum, coracoid, scapula, pelvis, and metatarsus, Plate X. fig. 3. 



Numbering of the Vertebrae and Bibs in Prehensores. 





Cervical. 



Dorsal. 



Sacral. 



Caudal. True ribs. 



False ribs. 



Psittacus Gruildingii 



11 

 12 

 11 

 11 

 12 

 12 

 12 

 12 

 11 

 damaged. 

 11 

 11 

 11 

 10 

 11 

 10 

 11 

 11 

 11 

 11 

 11 

 11 

 14 



9 



8 

 8 

 9 

 9 

 8 

 8 

 8 

 8 

 8 

 9 

 9 

 9 

 9 

 9 

 9 

 9 

 9 

 9 

 10 

 9 

 9 

 9 



12 

 11 

 10 

 11 

 12 

 12 

 13 

 12 

 12 

 11 

 11 

 10 

 11 

 10 

 12 

 10 

 10 

 10 



11 



12 

 11 

 11 

 13 



wanting. 



6 



6 



7 

 wanting. 



7 



6 



6 



6 



6 



6 



6 



6 



7 



6 



6 



5 



6 



7 



6 



6 



6 



7 



6 

 5 

 4 

 5 

 5 

 5 

 5 

 5 

 5 

 6 

 6 

 6 

 6 

 6 

 6 

 6 

 6 

 6 

 6 

 7 

 7 

 7 

 7 



3 

 3 

 4 

 4 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 2 



Nestor novae zealandise 



Conurus virginianus 



Ara macao 



Eclectis grandis 



Cacatua sulphurea 



citrmocristata 



Psittacula pullaria 



passerina 



Pezoporus formosus 



Psittacus erythacus 



Calyptorhynchus Baudinii 



Plyctolophus galeritus 



Trichoglossus versicolor 



Palaeornis columboides 



Euphema chrysostoma 



Platycercus Brownii 



Eupliema elegans 



Trichoglossus haematodes 



Platycercus zonarius 



icterotis 



Barnardi 



Strigops habroptilus 





General Remarks on Prehensores. 

 The Order Prehensores is one of the best-marked groups among Birds. They are 

 easily distinguished, independently of external characters, there being no group that 



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