20 PROCEEDINGS OF THE ANATOMICAL AND ANTHROPOLOfilCAL 



Dentition. All four incisors find the two last right molars arc wanting. 

 The remaining teeth are in perfect condiiion. 

 The mandible is absent. 

 The basilar suture is closed. 



3. IBO SKULL FROM OWERI DISTRICT, S. NIGERIA. 



L. 179. 



B. 134. 



Bi. 749. (Dolicho-cephalic). 



II. 133. 



Hi. 743. (Metrio-cephalic) 



B.N. 101. 



15 A. 98. 



Ai. 970. (Orthognathous). 



Nh. 49. 



N\v. 28. 



Mi. 571. (Platyrhine). 



Ovv. 41. 



Oh. 30. 



Oi. 878. (Vfesoseme). 



The transverse curve of the calvaria is rounded. The sutures are normal 

 and very serrated. The sutures between the two parietals and the occipital 

 are open. 



The orbits are noticeable on account of the deep lachrymal groove and 

 the prominent lachrymal hamulus. The posterior border of the lachrymal 

 groove is thin and sharp. 



The nasal aperture is noticeable on account of the very prominent subnasal 

 fossa? on both sides. The width of the fossae is fully G mm. Between them is 

 a prominent nasal spine. The nasal bones are regular in shape and equal in size. 



The palate is parabolic in outline. The alveolar margins are high The 

 postpalatine spine is blunt anJ prominent. The sutures are regular. The 

 palatal surface is very rough. 



At pterion the parietal meets the sphenoid, but a wormian bone intervenes 

 behind the point on the right. On the left side a wormian bone is situated 

 at pterion, i e , parietal does not meet sphenoid nor frontal squamosal. 



The glenoid fossa is deep on both sides. The basilar suture is closed. 

 The styloid processes on both sides are absent. The right jugular foramen is 

 abnormally large, and is divided into two compartments by a transverse 

 spicule of bone. 



Dentition. All the permanent teeth have been erupted. The molars on 

 each side are present and are sound. 



The mandible is absent. 



