1895.] LOEITTS FLATOPALLIATtrS ATTD PSITTACUS ERITHACUS. 395 



Dimensions of the Skull (continued). 



Length of the cranial articular process of quadrate. . 



From suprameatal process to apex of paroccipital 

 process 



From quadrato-jugal articulation to apex of par 

 occipital process 



From apex of paroccipital process to exoccipital 

 process 



Length from middle of craniu-facial articulation of 

 dorsum of skuU to vertical plane of apex of pro- 

 sopium 



Length from the same point back to the vertical 

 plane of the greatest conyexity of occiput 



Least interorbital breadth 



Greatest antorbital breadth 



Greatest postorbital breadth 



From greatest parietal prominence of one side to that 

 of the other 



Length of orbit as seen on the skull's dorsal aspect ... 



Supero-anterior margin of palatine 



Postero-inferior margin of palatine 



Postero-inferior margin of palatine (in straight line) 



Postero-superior margin of palatine to base of pro- 

 cess 



Length of postaxial process 



Length of interorbital septum in front of palatine ... 



Length of palatine junction with cranium 



Length of basis cranii from postaxial end of junction 

 of palatine with cranium to eustachian aperture . 



Length from preaxial margin of occipital condyle 

 to postaxial mid-junction of pterygoids 



Length of opening in septum for exit of olfactory 

 nerve 



Breadth of that aperture 



Length of obscure ridge extending from process 

 external to small orbital foramina to post- 

 orbital process 



From apex of bony beak to middle of lambdoidal ridge 

 (in a straight line), ventral surface of skull being 

 regarded 



From apex of bony beak to posterior end of palate . . 



From posterior end of middle of posterior margin of 

 palate to front base of occipital condyle 



Extreme length of palatine from margin of palate to 

 end of palatine postaxial process 



Breadth between the insides of the two quadrato 

 pterygoid articulations 



Brendth between the insides of the two quadrato 

 j ugal articulations 



Breadth between the posterior apices of the two 

 quadrates 



Breadth between the posterior apices of the two par- 

 occipital processes 



Breadth of foramen magnum 



Antero-posterior extent of ditto 



Lorius. 



•45 

 10 

 •9 



•7 



1-6 



1-8 



•5 

 ■4 



11 



Psittacws. 



•6 

 1-3 

 10 



•8 



2-1 



1-8 



•8 

 •3 



10 



