200 



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



[Vol. XI. 



J = 58 ECHXS CA TUN ATA. 



Body robust ; head scarcely distinct from neck, thick 

 and high, with a very short snout ; tail short. 58 E. 

 carinata, 



K = 16 Lycodon carinatus. 



Body much compressed posteriorly ; belly keeled ; 

 head with short and blunt snout ; tail compressed. 15 L. 

 aulicus. 



L = 34 Chbrsydrus granulatus. 



Body much compressed ; belly compressed to a central 

 keel ; head scarcely distinct, with high square snout ;.. 

 tail strongly compressed, tapering to a point. 34 CL 

 granulatus. 



fVf = 47 Hydrus platurus. 



Tail strongly compressed ; oar-shaped. 



1. — Body short. 47 H. platurus. 



2. — Body short and stout. 46 E. curtus. 



3. — Head moderate ; body stout. 52 D. stokesii. 



4. — Head rather small ; body moderately elongate. 48 H. 



spiralis. 



5. — Head short with a declivous pointed snout ; body 



moderately elongate. 53 D, jerdonii. 



6. — Head moderate ; body moderately elongate. 54 D. 



robusta ; 56 D. ornata. 



7. — Head moderate ; body elongate. 55 D. cyanocincta. 



8. — Head very small ; body long, with an extremely slender 



neck. 49 H. fasciatus ; 50 H. gracilis ; 51 H. 

 cantoris. 



N — 42 Callophis trxmaculattjs. 



Body worm-like, being cylindrical, of nearly equal 

 thickness throughout ; very slender ; tail not distinct,, 

 ending in a blunt point. 



