1. ACKOCHOEDTJS. 2. CHEESTDEITS. 173 



1. ACROCHORDUS. 



Aerochordus, Sornstedt, Abh. Acad. Stockholm, viii. 1787, p. 307 ; 



Baud. Sept. vii. p. 388 (1803) ; Gray, Cat. Sn. p. 61 (1849) ; Dum. 



Sr Bibr. Erp. Gin. vii. p. 34 (1854) ; Giinth. Rept. Brit. Ind. p. 335 



(1864). 

 Acrochordua, part., Schleg. Phys. Serp. ii. p. 424 (1837). 

 Potamophis, part., Schmidt, Abh. Naturio. Hamb. ii. 1852, p. 76. 



Teeth subequal, about 15 in eact maxillary. Head not distinct 

 from neck, small, covered with granular juxtaposed scales ; nostrils 

 close together on the top of the snout ; eye very smaU, with ver- 

 tically subelliptic pnpU. Body stout, slightly compressed ; scales 

 very small, tubercular, spinose ; no ventral shields. -Tail short, 

 snboylindrical, prehensile. 



Malay Peninsula and Archipelago ; New Guinea. 



1. Acrochordus javanicus. 



Acrochordus javanicus, Scyrnstedt, Abh. Acad. Stockh. viii. 1787, 

 p. 307, pi. xii. ; Shaw, Nat. Miseell. v. pi. cxiviii. ( — ■?); Daud. 

 Mept. vii. p. 390, pi. Ixi. fig. 42 (1803) ; Schleg. Phys. Serp. ii. 

 p. 428(1837), and Abbild. pL xvii. figs. 12-14 (1839); Cantor, 

 Cat. Mai. Rept. p. 58 (1847) ; Gray, Cat. p. 62 (1849) ; Dum. §• 

 Bibr. vii. p. 36 (1854) ; Jan, Icon. Gen. 1, pi. iv. (I860) ; Giinth. 

 Rept. Brit. Ind. p. 336 (1864) ; F. Miill. Verh. nat. Ges. Basel, 

 viii. 1887, p. 267. 



dubius, Shaw, Zool. iii. p. 675, pi. cxxix. (1802). 



Potamophis javanioa, Schmidt, Abh. Naturw. Samb. ii. 1852, p. 75. 



Head-scales very small, rough, larger and flat towards the mouth; 

 no shields of any kind. About 120 scales round the body, dorsals 

 largest. Brown or olive above, more or less distinctly spotted, 

 striped, or marbled with black ; lighter beneath. 



Total length 1300 millim. ; tail 180. 



Malay Peninsula, Java, New Guinea. 



a, b. Yg. 



c. Ad., stflFd. 



d, e. Many yg. 

 f,ff- Yg. 



h. d- 

 i. 6- 

 k.-m. 5 , hgr., & yg. 



2. CHERSYDRUS. 



Hydrus, part., Schneid. Hist. Amph. i. p. 233 (1799). 



Chersydrus, Cuv. Regne Anim. n. p. 75 (1817) ; Gray, Cat. Sn. p. 60 



(1849) ; Dum. Sf Bibr. Brp. Gin. vii. p. 40 (1864) ; Giinth. Rept. 



Brit. Ind. p. 336 (1864) ; Bouleng. Faun. Ind., Rept. p. 365 (1890). 



