50 



DR. W. G. RIDEWOOD ON THE CRANIAL 



[May 3, 



premaxilla alone bounds the gape above ; the premaxillary teeth 

 are crowded, small, and sharply pointed. The maxilla bears no 

 teeth ; the anterior extremity which articulates with the mes- 

 ethmoid is sharply incurved. The surmaxilla is single. 



Mandibular Series (text-fig. 17). — The dentary bears teeth similar 

 to those of the premaxilla. There is a clear distinction between the 



pop wp q ecar-^an, 



Alhida conorhynchus, right side of skull. For explanation of lettering, see p. 81. 



<?F 



pop 



wp 



cut + sar 



pi 



-ecur 



d 



Albula conorliynehws, hyopalatine arch, opercular bones, and mandible, left side, 

 mesial aspect. For explanation of lettering, see p. 81. 



endosteal and ectosteal parts of the articular, and, lying anterior 

 to the former and on the lingual side of the latter, is a sesamoid 

 articular of unusually large size. The angular is not distinct 



