1899.] 



CRANIAL OSTEOLOGY OF THE PAEROTS. 



35 



three ; while Agajjornis and Fcdceornis also have peculiar characters. 

 The skulls of Geoffroyus and Eclectus are extremely alike, in all 

 their leading features : the}'- are, moreover, so similar to that of 

 Coracopsis, that their descriptions may be abbreviated. They 

 both have, as in Coracopsis, a prefrontal which reaches to, but 

 does not join, the squamosal ; a small postfrontal, somewhat larger, 

 however, than in Coracopsis and directed more forwards ; a raised 

 triangular basitemporal shield, with broad smooth lateral areas 



Fiff. 31. 



Quadrate bone of Janygncdhus megalorhynchus. 

 Y^s. 32. 



Polytelis harrabandi. 

 JFiff. 33. 



Aprosmidios cyanopygius. 



reaching back to a sharp and nearly horizontal paramastoid : in 

 both, the lower margin of the auditory meatus is deeply and 

 narrowly notched, the upper and posterior angle somewhat square, 

 especially in Eclectus ; the temporal fossa narrow and deep. The 

 mandibular f ontanelle is distinct but not large. 



Tanygnathiis, while appertaining to the same type, exhibits 

 numerous points of difference. The orbital ring is more widely 



3* 



