530 Dr. C. I. Forsyth Major on 



M. A. C. 



Percentage length of molar region of palate 



(see Nathusius) 46-3 49-4 , 502 62-4 



Percentage length of incisor region of palate 



(see Nathusius) 26-8 243 . 22-9 20-9 



The crest above the canines in amhoinensis has a some- 

 what different shape from what obtains in philippensis and 

 mindanensisj and agrees with celehensis \ it is higher than in 

 the first two and considerably thickened behind. 



The zygomatic arches bend out more suddenly in amhoin- 

 ensis than in mindanensis or philippetisis, wliich List two in 

 this respect again more approach verrucosus from Java, whilst 

 amhoinensis ranges with celehensis and with the Bornean form 

 of verrucosus. 



Again, as compared with mindanensis and philippensis^ in 

 amhoinensis (and celehensis) the whole of the mandibula is 

 higher and broader, and the ascending ramus longer antero- 

 posteriorly and more vertical ; the greater height contributes 

 towards increasing the height of the whole skull wlien resting 

 on the mandibula in its natural position. In this respect, 

 however, there appears to occur variations in the skull of the 

 philippensis from Luzon *, as also in the height of the skull, 

 independently from that of tiie mandibula (percent, height of 

 occiput in the two skulls described by Nehring 45*6 . 40*5). 



The molars of amhoinensis, as compared with those of 

 mindanensis, are not so narrow, their enamel loss delicately 

 wrinkled, and they are less regularly inserted ; whilst in 

 mindanensis their outer margins lie in a line almost parallel 

 to the long axis of the skull, they form in amhoinensis a con- 

 vex line outwardly. As compared with celehensis, the third 

 molars of amhoinensis, though short, are slightly more com- 

 plicated. 



There are to be noticed some small variations between the 

 two skulls from Amboina. The skull 1362 d, which, to 

 judge from the wear of the teeth, was a somewhat younger 

 specimen than 1362 c, shows the upper contour slightly more 

 concave in the region of the naso-frontal suture. In the 

 same skull this region, viewed from above, is, together with 

 the anterior frontal and the whole nasal region, more flattened 

 and broadened than in 1362 c; beliind and above the supra- 

 orbital foramina the frontal region of the former skull 

 (1362 d) ascends steeper towards the occiput and is more 

 convex from side to side and from before backwards. Both 

 skulls show feebly raised rugosities on tlieir outer nasal 



* See " S.frenatus," lleude, /. c. tome ii. 1894, p. 2in, pi. xxvii. tig. 5. 



