PSITTACID^E.] 



OSTEOLOGIA AVIUM. 



[Strigopsin^e. 



Length of humerus . 

 Length of ulna . . 

 Length of metacarpus 

 Length of femur . 

 Length of tibia . . 

 Length of metatarsus 

 Length of sternum . 



Measurements. 



Tenths. 

 30 

 37 

 22 

 21 



31 

 10 



27 



Tenths. 

 Breadth of posterior margin of sternum 12 

 Breadth of anterior margin of sternum 11^ 



Depth of keel . 10 



Length of head 38 



Breadth of head 19 



Length of pelvis . 30 



Breadth of pelvis 15 



Illustrations. 

 Sternum, coracoid, scapula, furculum, pelvis, and metatarsus, Plate X. fig. 2. 



Nestoe, Wagl. 



Australis, Sh. 



Very similar to Cacatua, but having two fissures on the posterior margin of the 

 sternum, the anterior edge slightly receding, and the tarsi rather longer. 



Measurements. 



Tenths. 



Length of humerus 22 



Length of ulna 25 



Length of metacarpus 18 



Length of femur 20 



Length of tibia 31 



Length of metatarsus 14J- 



Length of sternum 23 



Tenths. 

 Breadth of posterior margin of sternumll 

 Breadth of anterior margin of sternum 10 



Depth of keel 7 



Length of head 30^ 



Breadth of head 15 



Length of pelvis . 27 



Breadth of pelvis 12 



Subfam. 3. Strigopsin^e. 

 Strigops, G. B. Gray. 



Habroptilus, G. B. Gray. 



Cranium regularly arched from the occiput to the tip of the bill ; transverse impres- 

 sion at the base of the nasal bones very slight ; nasal orifices large, slightly oval ; the 

 remaining bones of the head similar to the other Psittacidce. 



Sternum broadest posteriorly, and gradually narrowed anteriorly ; the hinder margin 

 very much curved from the centre to the lateral margins ; the keel consists of a very 

 slight rib, which does not quite reach the posterior margin, which has a small foramen 

 on each side ; anterior edge of the sternum bifid, but without any manubrial process. 

 Coracoids short and strong. Furculum rudimentary, the rami not meeting. 



Metatarsi with the divisions of the bones forming it distinct ; the entometatarsal one 

 the smallest ; the ectometatarsal trochlea much shorter than the mesometatarsal one. 

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