Vol. 6g.^\ 



THE HUMAN SKULL, ETC. EE05I PILTDOWN. 



135 



and in the probably large size of the face, the mandible appears to 

 be almost precisely that of an ape, with nothing human except the 

 molar teeth. Even these approach the ape-pattern in their well- 

 developed fifth cusp and elongated shape. The specimen, therefore, 

 represents an annectant type, and the question arises as to whether 

 it shall be referred to a new species of Homo itself, or whether it 

 shall be considered as indicating a hitherto unknown genus. The 

 brain-case alone, though specifically distinguished from all known 

 human crania of equally low brain-capacity, by the characters of 

 its supraorbital border, and the upward extension of its temporal 

 muscles, could scarcely be removed from the genus Homo ; the bone 



(Fig. 5 cont,) 



of the mandible so far as preserved, however, is so completely 

 distinct from that of Homo in the shape of the symphysis and the 

 parallelism of the molar-premolar series on the two sides, that 

 the facial parts of the skull almost certainly differed in fundamental 

 ■characters from those of any typically human skull. I therefore 

 propose that the Piltdown specimen be regarded as the type of a 

 new genus of the family Hominidae, to be named Eoanthropus 

 and defined by its ape-like mandibular symphysis, parallel molar- 

 premolar series, and narrow lower molars which do not decrease 

 in size backwards ; to which diagnostic characters may probably 

 be added the steep frontal eminence and slight development of 



