312 



PTERnprs LErroPTERrs. 



longer than broad. Posterior basal ledge well developed in p\ in 

 J)'' and m' more developed on postero-interual than on postero- 

 external side of tooth ; antero-internal base of p' forming a 

 distinctly projecting narrow ledge; a similar but still narrower 

 ledge in p^ and m'. m" larger than usual, about one-third or two- 

 fifths the bulk of m'. 



Fig. Kj.—Ttrrointslcucopiertis, Philijipines. Tj])6 of PL cJiiiiemix. (Outline of 

 occiput and top of coronoid process partly restored from a second 

 skull.B. M. 6-M.14.3.) }. 



i, normal; i., unusually large, about five times the bulk of i,. 

 Lower canines as in Pi. psclaphon. p^ subequal to or slightl}" 

 larger than i, (relatively larger than in I't. jmrjajihon, but not 



