172 COLtTBEID^. 



Subfam. 1. AGROGHOBDINM. 



HydrophidEe, part., Boie, Isis, 1827, p. 610. 



HydridsB, part. (Aclirochordina, Xenodermina), Oray, Cat. Sn. p. 35, 



1849. 

 Acroeliordiens, SumSril, M4m. Ac. 8c. xxiii. p. 435, 1853 ; Du- 



mfy-il 8f Bibron, Erp. Gin. vii. p. 32, 1854. 

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

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

 AorocliordidaB, Giinther, Sept. Brit, Ind. p. 335, 1864. 

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

 AcrooliordidsB, NotliopidaB, Cope, Proc. Amer. Plilos. Soc. xxiii. 



p. 484, 1886. 

 Aorochordinse, Boulenger, Faun. Ind., Bept. 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 Asiaand Central America. 



Fig. 13. 



Skull of Chersydms granulatus. 



Synopsis of the Genera. 



I. No ventral shields ; head covered with uniform granules. 



Body scarcely compressed 1. Acrochordus, p. 173. 



Body and tail compressed, with a fold below. 



2. Chersydms, p. 173. 



II. Ventral shields well developed ; head covered with uniform 



granules 3. Xenodermus, p. 175. 



III. Ventral shields well developed ; head with symmetrical 

 shields. 



Subcaudals single ; prsefrontal and supraocular shields present. 



4. Stoliczkaia, p. 175. 

 Subcaudals in two rows ; no prsefrontal or supraocular shields. 



5. Nothopsis, p. 176. 



