172 



COLUBRID^. 



Subfam. 1. ACROC HORDING. 



Hydropliidse, part., Boie, Isis, 1827, p. 510. 



Hvdridie, part. (Achrochordina, Xenodermina), Gray, Cat. Sn. p. 35, 



1849. 

 Aerochordiens, DumSril, Mem. Ac. Sc. xxiii. p. 435, 1853 ; Dii- 



mSril ^ Bibron, Erp. Gen. vii. p. 32, 1854. 

 Acrochordidpe, Jan, Elenco sist. Ofid. p. 106, 1863. 

 Acrochordidpe, Cope, Proc. Ac. Philad. 1864, p. 231. 

 Acrochordidse, G'dnther, Rept. Brit. Ind. p. 335, 1864. 

 Nothopidas, Cope, Proc. Ac. Philad. 1871, p. 202. 

 Acrocliordidfe, Nothopidse, Cope, Proc, Ainer. Plilos. Soc. xxiii. 



p. 484, 1886. 

 Acrochordinse, Boulenger, Faun. Ind., Rept. p. 354, 1890. 



Postfrontal bone produced over the supraorbital region. Maxil- 

 lary and dentary bones armed with solid teeth along their whole 

 length ; palatines and pterygoids toothed. Hypapophyses developed 

 throughout the vertebral column. Scales not or but slightly 

 imbricate. 



South-eastern Asia and Central America. 



Skull of Cho-sydrus granulatus. 



Synopsis of the Genera 



I. No ventral shields ; head covered with 



Body scarcely compressed 1. 



Body and tail compressed, with a fold below, ^"f"" '^H^d 



2. CftelrsvATus fu; 1 73. 



II. Ventral shields well developed ; head i 



granules 3. Xeui 



p. 173. 



iikiform 

 .'^175. 



III. Ventral shields well developed ; head 

 shields. 

 Subcaudals single ; prsefrontal and supraocular shi 



4. Stolicz! 

 Subcaudals in two rows ; no praefrontal or supraocu 



5. Nothop 



