THE PRIMATES EXCEPT MAN 135 



of the tooth between metaconid and entoconid usually passes in 

 a straight obliquely placed line between the hypoconid and 

 the hypoconulid which is present on all the teeth and tends to 

 lie rather toward the lateral aspect. Balancing the hypoconulid 

 there is sometimes developed from the cingulum a cusp behind 

 the entoconid at the postero-mesial corner of the tooth. The 

 hypoconulid tends to be small most frequently in the Chim- 

 panzee. 



