1872.] DR. J. ANDERSON ON MACACUS BRUNNEUS. 20;") 



of the latter ; but, as I have already indicated, I was wrong in think- 

 ing so, and I was really dealing with a young Monkey. 



The skull is very thick, the frontal bone, about half an inch above 

 the superciliary margin, measuring 3 lines in thickness. The suture 

 between the frontal and malar bones has entirely disappeared ; and 

 that between the squamous and parietal on one side is partially ob- 

 literated in its latter third. The lambdoidal, sagittal, and fronto- 

 parietal sutures are intact ; but the fontanelle is completely closed. 



The principal features of this young skull are its short and full 

 muzzle, the round orbits marked by strong, inwardly projecting supra- 

 orbital processes, the rather broad, triangular surface formed by the 

 nasals, and the regularly triangular oritice formed by the external 

 nares, the contracted zygomatic arch, which is curved slightly inwards 

 and which confers little capacity on the temporal fossa, the broad and 

 globular form of the cranium when viewed from above, and its rather 

 elongated oval shape when seen in profile, and the slightly swollen 

 character of the frontal in the middle line. The short muzzle, con- 

 tracted zvgomata, and globose skull are the characters of youth ; but 

 the permanent teeth are well developed, with the exception of the 

 last molar. 



Measurements of the skull . 



in. lin. 



Extreme length, from prsemaxillse to occiput 4 2 



Eminence of frontal sinus to occiput 3 6 



Extreme breadth above roots of zygomata 2 9 



Breadth at front of temporal fossa, in a line with upper mar- 

 gin of orbit 2 



Breadth across malars 2 7 



Breadth between internal margins of orbits 2 2 



Length of nasals in middle line 1 



Length of external nares 6^ 



Greatest breadth of nares 5 



Nasal process of frontals to tip of premaxillaries 1 10 



Inner angle of orbit to tip of premaxillaries . 1 2 



Zygomatic notch of malar to tip of premaxillaries 1 9 



Length of zygomatic arch to root of postglenoid process . . 14 



Greatest breadth of muzzle 1 6 



Vertical height of skull on a line with external auditory me- 

 atus and anterior margin of foramen magnum 2 2 



Posterior margin of palate to anterior margin of foramen 



magnum 1 3 2 



Antero-posterior length of foramen magnum . 8 



Posterior margin of foramen magnum to posterior extremity 



of skull 1 0- 



Length of palate 1 4 2 



Greatest breadth of palate 10^ 



Distance between postglenoid processes 2 1 



Depth from lower margin of orbit to alveolar border Oil 



Length of lower jaw, from condyle to symphysis 2 8 



Depth from tip of eoronoid 1 fi 



