JIElU'ETOLOaW 803 



Gerakda, Grai/. 



G. mcoLou, Gray. 



Scales smooth, iu 17 rows. A single pra^frnntal. Eye over tlio fourtli laliial. 

 Colour above muddy. Belly pale. Grows to 11 inches. 



Inhabits Pegu. 



Caxtokia, Gerard. 



C. Dayana, Stoliczka. 



Scales smooth, in 19 rows. A sin:;le prefrontal. Eye surrounded by a circle of 

 plates. Body long and slender. Colour above dull yellow, with numerous dark 

 bands. Below pale yellow, with a dusky greenish hue along the centre. Grows to 

 yo inches. 



Inhabits the estuaries of Tegu. 



Eordonia, Gray. 



F. BicoLoK, Theobald. 



Scales smooth, in 25 rows. 5 upper labials, the eye over the fifth. One 

 prefrontal. Colour yellowish grey, dark spotted. Sides and belly white. Colours 

 distinctly separated. 



luhabits Pegu. 



F. uxicoLOE, Gray. 



Scales smooth, in 25 to 29 rows. 5 upper labials, the third entering the orbit. 

 Colour above dark ash. Sides and belly white. Grows to 25 inches. 

 Inhabits Pinang. 



HyrsiRnixA, Wajler. 

 H. rLU.MBEA, Boie. 



Scales smooth, in 19 rows. A single proefrontal. Colour brown, with a dark- 

 edged yellow stripe. A median dotted line down the belly, and a dark line along 

 the ends of the ventrals and along the junction of the subcaudals. Grows to 21 

 inches. 



Inhabits Upper Burma and Pegu. 



H. ENnvDRis, Sohn. 



Scales smooth, in 21 rows. A single proefrontal. Colour variable. Hair-brown 

 above, olive tinted, and with a blue irridescence. A pale stripe down each side, margined 

 above and below with a dark line. Sides and belly whitish. Along each side, above 

 the scuta, a stripe of pale salmon red. Scuta and scutelloe dark-edged. Grows to 28 

 inches. 



Inhabits Pegu and Tenasserira. 



H. MACULATA, W. Blanford. 



Scales smooth, in 25 rows. A single priefrontal. Colour blackish-ashy, with 

 three rows of irregular dark spots down each side, and a blackish band along the 

 margins of the ventrals. 



Inhabits the Bassein River. 



Ferania, Gray. 



F. SlEBOlDII, Schl. 



Scales smooth, in 29 rows. Two very small proefrontals. Thirteen lower labials, 

 the sixth the largest. Colour pale brown, with over 30 large brown black-edged spots 

 down the back, and below a row of alternating triangular brown spots. Belly and 

 sides yellow. Belly black-chequered. Grows to 25 inches. 



Inhabits Pegu, and probably all Burma. 



Hypistes, Gray. 



H. UYDRi.NUs, Cantor. 



Scales smooth, in 39 rows. Loreal large. 7 upper labials, the fourth being below 

 the suture of the prx- and postoculars. Ventrals sharply keeled. Colour greenish 



