39-1: DB. ST. GEOEGE MIYABT OX THE SKELETON OP 



Dimensions of the Skull. 



[May 7, 



LoHus. 



Psittacus. 



Length of prosopium from its apex to tbe middle of the 

 joint which unites it with the cranium (measured 

 along its dorsal curvature) 



The same measured iu a straight line 



Length of cranium from cranio-facial joint to the mid 

 dorsal margin of the foramen magnum (measured 

 along its dorsal curvature) 



The same measured in a straight Une 



Length from apex of prosopium to middle of hinder 

 margin of bony palate 



From middle of one maxillo-palatine junction to 

 hinder end of lateral margin of prosopium of the 

 same side 



Breadth of palate at line of maxillo-palatine junc- 

 tions 



Breadth of cranio-facial hinge-joint on dorsum of 

 skull 



Length from apex of prosopium to its lateral notch 

 (measured along the curve) 



The same measured in a straight line 



Length from lateral notch to hinder end of lateral 

 margin of prosopium 



Its greatest height of bony beak 



From its ventral margin to nearest margin of nasal 

 opening vertically above it , 



Height of its dorsum above the dorsal margin of the 

 nasal aperture 



Antero-posterior extent of nasal aperture 



Measurement at right angles to the above 



Least interval between adjacent margins of nasal 

 apertures 



From posterior end of lateral margin of prosopium 

 to its lachrymal process 



Greatest height of frontal above lachrymal process... 



Height of jugal at its junction with maxilla 



Length of zygoma 



Length of pterygoid 



G-reatest axial diameter of orbit 



From dorsal margin of orbit to ventral margin of 

 zygoma taken at right angles to cranial axis 



From apex of frontal nasal process to distal end of 

 lachrymal 



From apex of lachymal to apex of sphenotic process . 



From apex of lachrymal to that of postorbital pro- 

 cess 



Prom apex of postorbital process to that of sphenotic 

 process 



From apex of sphenotic process to postaxial margin 

 of the meatus auditorius externus 



From dorsum of quadrato-jugal articulation to apex 

 of suprameatal process 



From dorsum of quadrato-jugal articulation to the 

 greatest prominence beneath it of the ventral 

 articular surface of quadrate 



2-9 

 2-5 



51 

 3-6 



1-4 



40 

 3-4 



60 

 4-2 



1-8 



