1S25.3 Mr. Gra^ on the Genera of ReptikU. 361: 



2. Enhydri s, Merre/Tz. ' . , .. 

 Head shielded ; belly with a row of small shields ; tail beneath 



scaly ; body keeled ; neck simple. 



E. spiralis, Merrem. Hydrus spiralis, Shaw. 



3. DisTERTA, Lacep. 



Head shielded ; belly with a row of shield apparently formed 

 of two rows of scales soldered together ; tail beneath scaly ; 

 neck simple. 



J), dolmta, Lacep, N.H. Capt. P. P. King. [ 



4. Hydro PHIS, Daud, Leioselasma, Lacep. 



Head shielded ; belly and tail, beneath shielded. * 



^ H. nigro anctus, Daiid. Ilussel, Lid. Serp, t. 6. ^^Leiose- 



lasma, striata, Lacep, Ann, Mas, iv, ^^'^ ? H. spiralis, nob. 



H. spiralis, Shaw. 



5. Pelamis, Dand, Hydrophis, Latr. and Daud, 

 Head shielded ; body and tail entirely scaly. 



P. bicolor, Daud, Anguis platm'a, Lin, ^^5'*^' f 



6. Chersydreas, Cuv, Acrocordus, Shaw, 



Head and body entirely covered with small scales ; tail com- 

 pressed. 

 ,; £?• granulatus, Merrem. Hydrus, Schneider, Pelamis, Daud, 



^^*Fa7ig$ none; tail round. , 



7. Acrocordus, IZor;2s^e(/^. 



Head and body entirely covered with small scale ; tail round;) 

 fangs none. 



A. Javanicus, JIor/2s^e(i^. 



Fam, V. CoLUBRiD^. 



Jaws furnished with teeth, and sometimes fangs ; head covered 

 with plates ; abdomen covered with broad ring-hke plates ; tail 

 with two, and sometimes only one series of plates beneath j anus 

 destitute of spurs. 



"^ Mouth with fangs. 



1. Trimeresurtjs, Lacepede, 



Head narrow, shielded ; body with broad smooth scales on 

 the sides, and narrow keeled scales on the back ; tail with ^hole 

 and divided scales. :i-?imi-% »o ^ 



T. leptocephalus, Lacepede, Ann, Mus. 'N. H. 



2. Bungarus, Daudin. 



Head blunt with nine plates ; body scaly with the dorsal 

 scales larger than the rest. Subcaudal scale one rowed, entire. 



B. cseruleuB, Daud. Boa lineata, Shaw. 



