342 FOUR NEW SEA SNAKES. 



lI'J Id '■)■< scale;; ruiiiiil llif iierk, ■j-j to \- ru\iiiil tlin tinckcit |i;u'l, 

 ut tlie bufly, iuibiieate anteriorly, he.xaguiial ami suijiinbiicate poaleriui- 

 ly, willi a central t uben-le or short lieel- Veiitrals distinct tlirougliout. 

 271 toolo. 



CIrevisli ur <'reeiusli-i;re\- above, ^ireenitli or vellowibli white 

 below, witli 55 to 08 dark <^vey aiinuli. Head greyish or blackish with 

 3 cUow markings along the side ot" the head and across tlie snout. 



Total length, KjUU ; tail !25 mm. 



Ilabital. Uulf ot'iSiam. Tyi't; locality, mouth ol the i'hanta- 

 biin river. 



Nearest [)erha[)s to H. ••ij'iaiKuidus Uaudin, but diileriiig in the 

 umeh smaller size, smaller tiontal shield, larger eye, single anterior 

 temporal, and in colouration. 



JdlK.N. NAT. HIeT. SOC. SlA^^ 



