Oope.l 550 j- Jan< lg) 



tlie apex opposite to the frontal foramina. Lambdoidal suture confluent. 

 The malosquamosal suture marks the posterior edge of the posterior orbi- 

 tal rim at the middle of the orbit. The parieto-squamosal suture has an in- 

 ferior position in front. Opposite the front of the postglenoid process it 

 converges inwards in line for the occipital bifurcation, and is continued as 

 the parietooccipital suture, nearly to that point. The squamosal border, 

 however, extends in a Z-form to the posterior temporal crest half-way be- 

 tween the bifurcation and the meatus auditorius. It embraces an area of 

 the posterior face of the skull, and the posterior half of the rim of the au- 

 ricular meatus. 



The typical specimen presents only the alveoli of the canine and first 

 premolar teeth ; otherwise the dentition is perfect. The crowns of the 

 second and third premolars are obliquely quadrate in horizontal section, 

 both a little wider posteriorly than anteriorly. This is due to the presence 

 of a half crescent of the internal side, whose posterior horn is attached 

 to the external wall, while the anterior is free. The external faces of these 

 premolars is slightly convex ; of the fourth premolar is slightly concave. 

 The first true molar is decidedly smaller than the second, and the second 

 is smaller than the third. The external sides of the external columns are 

 flat in the first true molar, but become more concave on the third. The 

 anterior edges of the columns project; forming ridges; or in section, project- 

 ing angles. No intermediate ridges, nor cingula. The third superior true 

 molar has a prismatic crown, no roots being visible in either of the adult 

 specimens, of which the typical one is rather old, as indicated by the wear 

 of the teeth. In the latter specimen the roots of the second true molar are 

 apparent, although the crown is elevated. The first true molar is not pris- 

 matic, although the crown is not low. The specimen represented by the 

 left maxillary bone contains the teeth which are wanting from the typical 

 one. The section of the crown of the canine is a semicircle, the truncate 

 face being posterior internal. It is not a large tooth, and is separated from 

 the first premolar by a diastema equal to its diameter. The first premolar 

 is one-rooted, the root with a groove on the internal side. The section of 

 the base of the crown is a triangle, the faces being anterior, external, and 

 posterointernal. Its inner face is concave above the base. 



None of the separate mandibular rami are complete, all lacking the 

 angle and condyle. The former is full and round, judging from a frag-, 

 ment in my possession. The ramus diminishes regularly in depth for- 

 wards. The symphyseal region is short, and its anterior face is very steep, 

 except at the alveolar region, where it is everted forwards. No trace of 

 suture. The internal pterygoid fossa is large and strongly marked, so that 

 the inferior edge of the ramus is inverted, so that the surface is convex ex- 

 ternally. The last molar is placed somewhat obliquely. The first and 

 second premolars are directed outwards and forwards, and the incisors 

 directed forwards. 



There are two incisors on each side of the symphyseal line. They are 

 very small and subcylindrical, and are closely packed between the canines . 



