212 



JOURNAL, R.A.S. (CEYLON). 



rvoL. xi. 



they are very small, numerous, of equal size, cylindrical 

 at the base, but transversely compressed towards the 

 tip, which forms a recurved cutting edge. 



Q = 6 Rhinophis oxyrhyncus. 



As in a, but the teeth are few, and none are fang-like. 



1. —No palatine teeth. 5 to 9, Uropeltidse. 



2, — Palatine teeth. 4 C. maculatus. 



H 1 Typhlops braminus. 



A few feeble teeth in the maxillaries only. 1, 2. 



j = 39 Chrysopelba ornata. 



As in a, but the posterior maxillary teeth are grooved. 



1. — Maxillaries sub-equal, the last three longest and 



grooved ; anterior mandibulary tooth longest. 35 

 D„ ceylonensis ; 36 D. forstenii ; 39 C. ornata, 



2. — As in j 1 ; the last two maxillaries grooved. 40 C 



rhyncops ; 41 G, prevostiana. 



K - 37 Dryophis mycterizans. 



As in j, but one or two of the central maxillary teeth 

 are much enlarged, forming fangs, and followed by an 

 interspace ; the posterior grooved ; the third and fourth 

 mandibulary teeth largest, fang-like. 37 D. mycterizans: 

 38 D. pulverulentus. 



L — 45 Naia tripudians. 



Maxillary teeth few, the first grooved in front forming 

 a fang in connection with a poison gland, the poison 

 canal terminating in a short slit. 



1. — Fang followed by one to three small solid teeth. 43 



B. ceylonicus ; 44 B. cseruleus ; 45 N. tripudians. 



2. No tooth behind fang. 42 C. trimaculatus. 



IVI = 46 Enhydris curtus. 



Maxillary with a pair of large grooved fangs, followed 

 after a considerable interval by small solid teeth. 



