KKY TO GKNERA. CI 



J', Incisors subverticiil, simple. 



k'*. Surface cusp in third ami fouitli 



lower clieek-tooth (p4 ami iiiv) . T!ioiiplerit.t, \> 002. 

 (l\ No surface cusp iu any clieek- 



tooth Cliirututj:, p. (j58. 



f^s 3 upper [and 5 lower! clieek-teeth on each 

 side, 

 (■•'i Length of rostrum (orbit to tip of nasals) 

 much griater than lachrymal breadth 

 (across lower edges of lachrymal 

 loramina). 

 t''. Post dental palate deeply depressed pos- 

 teriorly Epiiimiji/iui-iWi \K oil: 



/•>. Postdental palate flattened posteriorly. 



X''. Outer ridj^e of lower molars simple ... Eputimps, \t. IS7. 

 IJ. Outer ridge of lower molars bilobtd 



or trilobed UjjpsiyiwthaSi \). 'y)l. 



J'', Length of rostrum less than or subequal to 

 lachrymal bre.idtli, 

 jI^ Palate not extending beyond tootli- 



rows ^choanie at level of la^t molar) ... Cuaiiij/'.-lci'i.s, p. 5(i8. 

 /'', Palate extending behind tootli-ro«s. 



m''. Premaxilla; fused anteriorly Dj/acvjitenis, \i. Hoi. 



ii/. l'r( inaxilla; separated by suture ante- 

 riorly. 

 c'*. I'ostzygoniatic palate much nar- 

 rower [losteriorly than anteriorly . Sr(itiiii,i/(ieris, p. o''3. 

 y*. Post/.,\gon!atic jialate subequal in 

 breadtli throughout. 

 c^. Upper tooth - rows extending 

 l)ractically to ventral margin 



of orbital cavity MirrojiternpiiSy p. ooi. 



d'^. Upper toolh-rows not nearly 

 reaching ventral margin of 

 orbital cavity l^'unuiiyclcvie, p. .1.59. 



