792 



6. The smaller size of the coalesced parietals, and their separation from the alisphenoids. 



7. The conversion of a greater part of the outer surface of the parietals into concavities or 

 depressions for the lodgement of the temporal muscles by reason of the bony crest developed 

 from the line of the obliterated sagittal suture and of the lambdoidal crest. 



8. The larger proportion of this crest and of the squamosal plate developed from the 

 mastoid and the smaller size oi the proper mastoid process. 



9. The smaller size of the vaginal and styliform processes, and the absence of the styloid 

 process, arising from the non-anchylosis of the stylohyal bone. 



10. The larger postglenoid process and the longer auditory process (tympanic bone), with 

 their relative position, one behind, but not below the other. 



1 1 . The position of the stronger zygomata opposite the middle third of the basis cranii. 



1 2. The prominent superorbital ridge. 



13. The longer nasal bones, anchylosed together and flattened at their lower half. 



14. The greater proportional size and greater prominence of the upper and lower jaws. 



15. The longer osseous palate, and the median emargination of its posterior border. 



16. The parallelism of the alveoli of the molars and canine of one side with those of the 

 other. 



1 7. The diastema or vacant place in front of the socket of the canine in the upper jaw, and 

 behind that socket in the lower jaw. 



18. The larger and more produced premaxillaries ; the persistence of more or less of their 

 sutures showing the intervention of their upper extremities between the nasal and maxillary 

 bones. 



19. The minor extent of connection of the lacrymal with the ' pars plana' of the sethmoid, 

 or their separation by the junction of the orbital plate of the maxillary with that of the frontal 

 behind the lacrymal. 



20. The greater depth of the rhinencephalic fossa, and the absence or rudimental state of 

 the ' crista galli.' 



21. The squamosal, lambdoidal, alisphenoidal and pterygoid air-cells. 



22. The more prominent cusps of the molar teeth. 



23. The larger relative size and more complex grinding surface of the last molar tooth in 

 both jaws. 



24. The larger relative size of the premolars, especially of the first. 



25. The more complex implantation of the premolars by three roots, two external and one 

 internal. 



26. The much larger and longer canines. 



27. The sexual distinction in the development of these teeth. 



28. The more sloping position of the crowns of the incisors. 



29. The broader and higher ascending ramus of the lower jaw. 



30. The total absence of the prominence of the symphysis forming the chin. 

 Vertebral Column. Of the vertebrae of the trunk all are present in this skeleton except 



the seventh cervical (which has been modelled in plaster) and the caudal vertebrae. 



The number of dorsal vertebrae, or those bearing moveable ribs, is 1 3 ; that of the lumbar 

 vertebrae 4 ; that of the sacral vertebrae 5 ; the total number of true vertebras being the same 



