8 2 Bulletin American Museum of Natural History. [Vol. XVI, 



BRACHYCEPHALY. DOLICHOCEPHALY. 



Teeth. 



Grinding teeth Shortened and wid- Lengthened and nar- 



ened. rowed. 

 Cingula between 



teeth Suppressed Persistent. 



Canine teeth Rounded and broad- 

 ened Elongate compressed. 



Incisor series Placed transversely. . Converging anteriorly. 



Whole skull . 



Most of the constitu- 

 ent bones. 

 Palate 



Nasals 



Skull. 



Shortened and broad- 

 ened. 



Shortened and broad- 

 ened. 



Broadened and flat- 

 tened. 



Shortenedand spread- 

 ing. 



Lengthened and nar- 

 rowed. 



Lengthened and nar- 

 rowed. 



Narrowed and trans- 

 versely arched. 



Long with incurving 

 or straight sides. 



Malar and maxillary 

 bridge over infra- 

 orbital foramen. 



Infra-orbital fora- 

 men. 



Lachrymal bone .... 



Lachrymal canal . . . . 

 Zygomata 



Narrowed Broadened. 



Areas of insertion of 

 masseteric and 

 temporal muscles. 



Mastoid portion of 

 periotic 



Exoccipital, post- 

 glenoid, and post- 

 tympanic processes. 



Post - glenoid and 

 post-tympanic 

 processes. 



Not seen on side of 



face. 

 Crowded into orbit . . 



Crowded into orbit.. 



Broadened, especially 

 in the "buccal 

 plates " ; in section 

 broad rather than 

 deep. 



Conspicuous on side 



of face. 

 Exposed on side of 



face. 

 Seen on edge of orbit. 

 Elongate and vertically 



deepened; in section 



deep rather than 



broad. 



Increased Balanced or retained. 



Abbreviated . 

 Broadened . 



Approximated, espe- 

 cially below, en- 

 closing the exter- 

 nal auditory mea- 

 tus. 



Exposure persistent. 



Deepened and nar- 

 rowed. 



External auditory 

 meatus not closed 

 below. 



