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of the mandible. The mastoid is more prominent below than 

 above. The lower part of the petrous and the tympanic are both 

 prominent. 



Semnopithceus mitralus. A.-P. temp. 2.7 cms. Vertical 1.4 

 cms, sphenomalar 1.8 cms. Coronoid to lower border of jaw 4 cms. 

 Coronoid to Sagittal 4.5 cms. Petrous bullate, apex pointed, 

 mastoid triangulär with anterior border rounded. It is prominent 

 near lower angle. 



Macacus nemestrinus. A.-P. squamosal 4.5 cms. Vertical 

 2.5 cms, Sph. malar 1.5 cms. Temp. Par. suture to sagittal 4.5 cms. 

 Petrous, Convex in middle, is directed anter-internally. Tym- 

 panic flat in front, edged below. There is a good post. glenoid 

 spine. The external flat surface of mastoid is continuous with 

 occipital. 



Lower border of mandible to Coronoid 4.5 cms. Coronoid 

 to temp. ridge 2.5 cms. Temp. par. suture to sagittal 4 cms. Ra- 

 mus from Symphysis to angle 8 cms. There is a frontal process 

 of squamosal here, and in Macacus cynomolgus and in another 

 macacus, sp. (?) 



Cercopithecus sp. Temporal ridge convex above in front. 

 Concave above posteriorly. Ant.-post. sq. 6 cms. Fr. 1 cm. Ver- 

 tical temporal sq. 2.5 cms. Parietal 2.5 cms. Frontal closes off 

 temporal from sphenoid, so that temporal articulates with frontal. 

 Coronoid 5 cms. above lower border of mandible and 5 cms below 

 temporal ridge. The inter parietal space is widest near middle. 

 The Mastoids are convex. Tympanics narrow externally 4 mm. 

 Petrous prominent and low reaching. 



Cercopithecus Schmidtii. Ant.-post. sq. 3.4 cms, height 1.3 cm. 

 Temporal to crest 1.3 cm. Crest to sagittal 1.8 cms. Coronoid to 

 crest 3.4 cm. Coronoid to lower border of mandible 3 cms. Mastoid 

 prominent. Tympanic reaches two thirds round meatus audit. 

 externus. In some Cercopitheci the frontal process of temporal 

 may be absent. 



Cercocebus pollaris. A.-P. 3.4 cms. Vertical 3.2 cms. Temp. 

 to crest 1.9 cms. Crest to sagittal 3.2 cms. Lower border of Man- 

 dible to coronoid 4.5 cms. Coronoid to temporal 1.9 cms. Mastoid 

 slightly convex. Petrous and Tympanic united. 



Cynocephalus hamadryas. Ant.-post. squamosal 5.5 sph.- 

 malar 2.8 cms. Vertical 2.3 cms, Lower border mandible to coro- 

 noid 5 cms. Coronoid to suture (par. sq.) 3 cms. Sq. par. Suture 

 to sagittal 3 cms. Tympanic convex. Petrous process at middle 

 and pointed internally. Post Glenoid process 0.7 cms. Mastoid 

 slightly convex from without in. The out surface is continued 

 in occipital. 



Cynocephalus sphinx. Ant. post. sq. 5 cms. Vertical 2 cms. 

 Temp. to sagittal 4.8 cms. Temp. to crest 2.1 cms. Coronoid 

 to crest 3.2 cms. Coronoid to lower border mandible 4.1 cms. 



