116 



DE. H. P. STANDING ON SUBFOSSIL 



at rioht ano-les to the alveolar margin. A diastema of 9 mm. has existed between the 

 first (apparent) milk-premolar and the milk-canine. The lower profile of the mandible 

 is not straight, but shows a gently convex curvature. 



Apjyendicular Skeleton.— The humerus of M. edwardd has been found, as also that 

 of M. madagaseariensis. A fragmentary ulna and a femur of the larger animal are 

 fio-ured by Lorenz in his recently published memoir. The resemblance of the humerus 

 to that of the Anthropoid Apes is noted by Dr. Grandidier, though he attributes the 

 similarities to mere convergence. Of Megaladapis grandidieri a considerable number 

 of humeri and radii and one imperfect ulna have been discovered along with several 

 metacarpals and phalanges. But a discussion of the significance of the characters of 

 the appendicular skeleton of Megaladcij^is is deferred to a later section. 



Table 13. — Giving dimensions of five skulls oi Megaladapis grandidieri. 



Prom lower margin of foramen maguum to alveolar border of 



premasillfe , 



Maximum length of skull 



From lower margin of orbit to upper margin of foramen 



magnum 



From lambdoidal crest to fronto-nasal suture 



Length of palate along median line 



From lower margin of foramen magnum to posterior edge of 



palate 



From lower margin of orbit to alveolar border of premaxillae. . 



Length of series of molars and premolars 



From anterior surface of postgleuoid process to posterior edge 

 of third molar 



Vertical diameter of orbits 



Transverse diameter of orbits 



Maximum external height of brain-case 



Bi-zjrgomatic breadth (external) 



Maximum external breadth of brain-ease 



Breadth between styloid processes 



Transverse diameter of foramen magnum 



Vertical diameter of foramen magnum 



Distance between orifices of auditory meatus 



Breadth of skull at level of orbits 



Breadth between lacrymal foramina 



Breadth of palate between third molars (internal) 



Breadth of palate between antero-internal margin of canines 



Maximum breadth of nasalia 



Minimum breadth of nasalia 



Maximum width (height) of zygomatic arch 



276 

 295 



171 

 172 

 131 



153 

 130-5 

 76-1 



116 

 35 



35 

 69 

 127 

 68 

 [66J 

 27 

 25 

 78 

 32-5 

 71 

 39-8 



31-5 



21-8 

 34-5 



241 

 268 



163 

 157 



[106] 



145 



[103-5] 

 81 



98-5 

 33 

 32-8 

 64 

 123 

 70-5 

 71 

 26-5 

 24 

 78 

 34 

 59 

 38 



31-2 



127-5 



125 



78-2 



35 

 76 

 41-8 



29-2 

 18 



[120] 

 78-2 



31-2 



31-8 



66-5 



40-8 



28-2 

 17-5 



280 

 312 



172 

 205 

 139 



158 

 133-5 



87 



[116-5] 

 32-5 

 33 

 66-5 

 132 

 72 

 [G5] 

 25 



38 

 46 

 [36] 

 22 



