INNOCUOUS SEKPENTS. lol 



tail brown. S. 250 + 140. Countiy, Island of Java. 

 Celebes produces a cliniatal variety, distinguished by brown 

 tints, which pass to black on the posterior parts. 



11. Herpetodryas lineatus. a small species from 

 Surinam, where it is very common. Whitish-grey, above 

 brownish, with three dark rays ; nineteen rows of smootii 

 scales; eye large; vertical plate narrow. S. 170 + 70. 

 Brazil produces an Ophidian perfectly analogous ; but ail 

 its scales are bordered Ayith black, and the interrupted 

 dorsal rays are composed of black spots. 



12. Herpetodryas Helena. A very beautiful species 

 from Bengal, where it is very rare; scales small, smooth, 

 and disposed in tw^enty-seven row^s; form very slender. 

 S. 230 + 90. Below of a pearly colour; above of a rosy 

 purple, passing to brown tov/ards the posterior parts ; sum- 

 mit of the head of this last tint ; a yellowish-green dorsal 

 ray ; on the nape a pair of blue claviform streaks, includ- 

 ing a zig-zag line which is prolonged on the back. 



13. Herpetodryas Rhodogaster. Colours above as 

 in Herp. lineatus ; below red ; form much more slender 

 than in the Herp. lineatus ; but the head is rather large, 

 massive, and covered with plates not well developed ; frenal 

 small; the niunber of abdominal plates 186, the caudal 

 above 70 ; seventeen rows of smooth scales. Inhabits the 

 Island of Madagascar. 



14. Herpetodryas geminatus of Java. — Size small ; 

 form very slender ; trunk cylindrical, every^vhere of equal 

 thickness ; head small, of the same diameter as the neck, 

 depressed, obtuse at the extremity ; fifteen row^s of smooth 

 lozenge- shaped scales. S. 166 + 105. Marbled with 

 dark greyish-brow n. Tw^o dorsal rays of a silvery grey ; a 

 yellowish half-collar on the nape. 



15. Herpetodryas Psammophis. — Resembles the Colu- 

 ber viridiflavus in habit and system of colours ; but its 

 form is more slender ; the abdomen a little angular, and 

 the head more lengthened ; the physiognomy recalls that 

 of the Psammophis ; vertical plate elongated. S. 196 + 114. 

 Seventeen rows of scales, which are lanceolate and smooth. 

 Country, New Orleans. 



16. Herpetodryas Dendrophis. — Fifteen rows of 



