39° Bulletin American Museum of Natural History. [Vol. XIX, 



Fig. I. Inferior view of the skull of a young Asiatic elephant. About \ nat. size. From 

 a forthcoming memoir by Professor Osborn. 



BONES. 



P. mx. — Premaxillary. 



jl/jr.— Maxillary. 



Mx. p. — Maxillary pouch for molars. 



.,1f«.— Malar. 



Po.f. — Postorbital ridge of frontal. 



pal. Mx. — Palatine ledge of maxillary. 



P/.— Palatine. 



Vo. — Vomer. 



Ps. — Presphenoid. 



Bs. — Kasisphenoid. 



Bo. — Basioccipital. 



/. As. — Pterygoid wing of alisphenoid. 



P^.— Pterygoid. 



Sq. — Squamosal. 



Ex. o. — Exoccipital. 



pg. — Postglenoid ledge of squamosal. 



/. ty. — Posttympanic ledge of squamosal, 



which with pg. forms a secondary external 



auditor^' meatus. 

 Ty. — Tympanic bulla. 



ty.p. — Anterior process of tympanic. 



tp. h. — Tympanohyal. 



eu. — Eustachian opening of tympanic. 



^. /.y".— Anterior palatine foramina (canals). 



i. o.f. — Infraorbital foramen. 



/. «. — Posterior nares. 



/. a. s. — Alisphenoid canal. 



FORAMINA, ETC. 



/. I. ?«.— Foramen lacerum medius. 

 /.ov. — Foramen ovale (confluent withy./. ?«.) 

 i. c. c. — Canal for internal carotid artery. 

 f. St. 711. — Stylomastoid foramen. 

 f. I. p. — Foramen lacerum posterius. 

 c.f. — Notch, a vestige of condylar foramen 

 (?) (confluent withy. /./.). 

 TEETH. 

 ^ "^l^- /' {(i)iil). — Third premolar (or second deciduous molar of authors). 



/* ((/;« 3).— Fourth premolar (or third deciduous molar of authors). 



