MIOCENE PORPOISES — KELLOGG 



105 



s.or.pr. 



zyg. 



Figure 1. — Dorsal view of skull of Lophocetus pappus, with restored posterior end of brain- 

 case. Abbreviations: ant. n., antorbltal maxillary notch; c, occipital condyle; Fr. 

 frontal; Max., maxillary; Na., nasal; np., nasal passage; Pmx, premaxlllary; Sq., squamosal; 

 S.oc, supraoccipltal; s.or.pr., supraorbital process of frontal; zyg., zygomatic process. 



