279 



I I Ji'> 'Flic crnnium and four cervical vertebra- of the Uanksian Cockatoo (Calyplo- 

 rhyuckua Bamkii). 



Tlir depth of the uppr beak exceed* iu length. There i* snperoccipiul foramen. Tin 



:..ii-.. , i|.:t.i!- .,r, j >r ! ,, , : ; i . , . , i, i, ',. , : - 'I':.. : ,,-v .; s j-.i, h. |...-l In .i, 1 .1 1- .n..: u. 



continued forward* by continuous onificatioii to join the lacrymals, forming bony typo- 

 matic arch above, and nearly parallel with, the true one which is composed of the slender 

 malar and squamosal bones. The homy sheath* of the mandible* are preserved ; the lower 

 one i* of unusual depth. 



Miu. Gould. 



1447. The skull of a Calyptorhynckus, longitudinally and vertically bisected. 



l///v Gould. 



1448. The skull of a Calyptorkynchtu, transversely bisected through the middle of 

 the cranial cavity. MUM. Gould. 



Genus Plafyrerrtu (Parrakects). 



1449. The skeleton of the Red -cupped Parrakeet (Platycrrcu* pilratiu). 



Of the 1 7 vertebrse between the skull and sacrum, the five posterior bear moreable rib*, 

 the last four pairs of which unite with the sternum. There are also two pair* of sacral ribs, 

 both of which join the sternum. 



J/iw. Gould 

 Genus Polytele*. 



1450. The skeleton of the Black-tailed Parrakeet (Polytele* melanura). 



Of the 1 8 rertebrse between the skull and sacrum, the seven posterior bear moveable ribs ; 

 the last five pairs of these unite, with the sternum , there are also two pain of ribs attached 

 to the sacrum, of which the first joins the sternum. 



Mtu. Gould. 



Genus Latham**. 



1451. The skeleton of the Swift Lorikeet (Latham** ducolor). 



Of the 18 vertebrse between the skull and sacrum, the six posterior bear moveable ribs : 

 of these the last five pairs unite with the sternum ; there is a seventh pair attached to the 

 sacrum, which also joins the sternum. In this species the suborbital tract of bone is com- 

 plete by the junction of the lacrymal with the anteriorly produced mastoid : the sternum pre- 

 sent* the same form and development as in the genus SupAema. The rurculum i* small ami 

 slender. 



J/M. Gould. 



