DIPSADOMOHPHINiB, 31 



tt Loreal absent. 



Kostral moderate 184. Homalocranium, p. 212. - 



Rostral very large, prominent . . 185. Ogmius, p. 228. 



** Internasals united with anterior nasals. ^ 



186. StenorMna, p. 229. 



*** Internasals distinct ; a single praefrontal ; 

 vertebrae with shield-like neural expansions. 



187. Xenopholis, p. 231. 



b. Maxillary very short, with 2 to 5 solid teeth ; grooved 

 teeth below or in advance of the eye. ' 



a. No anterior temporal ; parietals in contact with 

 labials. 



* Palate toothed. 



No internasals ; nasal entire, moderate. 



188. Apostolepis, p. 232. 



No internasals • nasal entire, very small. 



191. Amblyodipsas, p. 244. 



Internasals distinct ; nasal divided or semidivided. 



193. Calamelaps, p. 245. 



** Palate toothless. 



Internasals distinct ; no prseooular. 



194. Bhinocalamus, p. 247. 



No internasals ; nasal in contact with an elongate prseocular. 



195. Xenocalamus, p. 247. 



)3. Postocnlar in contact with a temporal, 



* Nasal in contact with the rostral. 



t Nasal single. 



No internasals ; loreal present . . 189. Elapomoius, p. 237. ' 



No loreal ; a prseocular 190. Elapomorphus, p. 238. ~ 



No loreal ; no praeocnlar 196. Micrelaps, p. 248. 



tt Nostril between two nasals. 



192. Elapotinus, p. 244. 



** First labial in contact with the internasal. 

 197. Iliodon, p. 249. 

 2. Subcaudals single. 



a. Maxillary very short, with 2 to 4 solid teeth. 

 a. Pirst labial in contact with the internasal. 



No occipital shield 198. Polemon, p. 253. 



A large aaygous occipital shield . . 199. BrachyopMs, p. 254. 



