168 TEETIAET VERTEBEATA OE THE EATtTM. 



along their median border is 8 cm. The dimensions (in centimetres) of this specimen 



are : — 



Length from cniidyle to tip of symphysis 74 



„ posterior end of m. 3 to tip of symphysis . . . 54-5 



"Width of symphysis at narrowest 8 app. 



Length of symphysis 21-5 



The dimensions (in centimetres) of the teeth are : — 



Length. Width. 



m. 2 5'o 3-5 



m.3 7-4 4-4 



C. 8456. Nearly perfect mandible wanting the incisors. Figured in text-fig. 54. May be regarded 

 as a co-type. The characters o£ the species, viz. the symphysis extending back nearly 

 to the level of the anterior premolar and the comparatively long and narrow trilophodont 

 molars, are well shown. The dimensions (in centimetres) of this specimen are : — 



Length from condyle to tip of symphysis 67-2 



„ angle to tip of symphysis 64-2 



„ posterior end of m. 3 to tip of symphysis ... 49 



Width of symphysis at narrowest 8 



Length of symphysis 24'5 



Height at coronoid process 18'5 app. 



„ condyle 23 



The dimensions (in centimetres) o£ the teeth are : — 



Length. Width. 



pm. 3 2-7 1-7 



pm. 4 3-7 2-4 



TO. 1 3-5 2-8 



TO. 2 5-7 3-5 



TO. 3 7 4-1 



C. 8457. Nearly perfect mandible of a somewhat smaller individual than either M. 8414 or C. 8456, 

 the whole jaw being rather more slender. The dimensions (in centimetres) are : — 



Length from condyle to tip of symphysis 64 



„ from angle to tip of symphysis 60 



„ of symphysis 22-6 



,, of posterior end of m. 3 to tip of symphysis .... 47-5 



Width of sympbysial region at narrowest 5-.5 



The dimensions (in centimetres) of the teeth are : — 



Length. Width. 



JSTO. 3 2-9 1-4 



jpTO. 4 3-5 2 



TO. 1 3-8 2-5 



TO. 2 5-4 s-x 



TO. 3 6-6 3-5 



M. 8384. Mandible of small individual. The angular region is imperfect, and the symphysis is 

 much broken. The dimensions (in centimetres) are : — 



Approximate length from condyle to tip of symphysis ... 64 

 » ,, of symphysis 22 



