150 ON THE PHYSIOGNOMY OP SERPENTS. 



the head and dorsal ray of a lively brown ; a black stripe 

 behind the eye; abdomen convex. S. 178 + 95. From 

 Brazil and Surinam, where it forms a variety distinguislied 

 by a nearly uniform green colour. 



5. Herpetodryas maugaritiferus. Size and form 

 those of Her. Olfersii ; but it has a rather larger head ; 

 nineteen rows of scales, feebly carinated, black, with the 

 centre blue, and the tip yellow ; summit of the head a 

 bright brown; temporal region black. S. 154+115. 

 From New Orleans. 



6. Herpetodryas Bodd\ertii. Nearly allied to Herp. 

 Olfersii : but the alxlomen is a little angular, the head more 

 depressed, the labial plates more narrow, colour of a 

 greenish-grey, or uniform olive. S. 170+102. From 

 Suriuam. 



7. Herpetodryas ^stivus. Distinguished from the 

 three preceding species by seventeen rows of lanceolate and 

 strongly carinated scales, by a more thin make, and by its 

 fine grass-gi'een colour. S. 175+130. Inhabits both 

 Americas. 



8. Herpetodryas tricolor. Habit of Herp, viridis- 

 simus, but of less size ; its head also is shorter, thick at 

 the base, and very conical ; the trunk is less high, and the 

 fi-enal plate is wanting ; fifteen rows of square smooth 

 scales ; occipital plates much developed ; above of an olive 

 or bro\Miish green ; a black list passes from the eye to the 

 sides of the neck. S. 150 + 115. Very rare in Java. 



9. Herpetodryas Goudotii. Form very slender ; tail 

 extremely delicate ; above yellowish-brown ; on the flanks 

 numerous black oblique streaks, produced by the borders 

 of the scales ; sides of the abdomen spotted with black, 

 which forms a ray on the sides of the tail ; twenty-one 

 rows of scales, lanceolate and smooth. S. 186 + 158. 

 Country, Isle of Madagascar. 



10. Herpetodryas oxycephalus. Of a very vigorous 

 make, and has the habit of a Coluber ; trunk very com- 

 pressed and deep ; abdomen strongly angular ; tail long 

 and strong ; head acuminated, especially the muzzle ; 

 frenal plate small, and very much elongated ; twenty-five 

 rows of lanceolate and smooth scales ; green, below yellow, 



