142 
OK THE PHYSIOOKOMY OF SBllPENTS. 
shining blackish-brown ; the body surrounded with about 
twenty broad white bands ; 17 rows of scales. S. 208 -h 75. 
From Bengal and Java. 
10. Lycodon modestus. Allied by its organization to 
the Lycodon Clelia. Head more than usually conical ; 
scales with a smooth surface, nearly square, and disposed 
in 17 rows. S. 200 + 84. Colour above, deep brown, 
the lower parts and the collar yellowish. Inhabits the 
Isle of Amboina, and also New Guinea, where it acquires 
a very large size, and has then very pale tints. 
11. Lycodon Nympha. Form slender; head thick, and 
muzzle obtuse ; eyes very large; 13 rows of smooth scales ; 
abdomen narrow and angular. S. 220 + 85. Body brown, 
ornamented with pale bands or spots. Inhabits Bengal. 
12. Lycodon audax, of Paraguay, approaches in shape 
to the Dipsas. Form compressed and elongated; tail 
very thin and slender ; head thick behind ; varied with 
brown and yellow, which form large chequered and irre- 
gular spots; plates of the head dark in the centre; 19 
rows of scales. S. 200 4- HO. 
13. Lycodon Petolarius, has a shape like the preceding, 
but its head is a good deal narrower, and the body more 
slender. Teeth of equal size. S. 210 + 100. Body 
dark-brown, marked by numerous pale bands or rings, of 
which the disposition varies in different individuals. In- 
habits Guyana, and is also found in Brazil. 
The Coluber Dione of Pallas, a native of the Tar- 
tarian deserts, should probably be classed in the genus 
Lycodon. Never having examined this reptile, I leave to 
other naturalists the task of comparing it with the Asiatic 
species of the genus Lycodon. (Part II.) 
The fifth genus of Terrestrial Serpents is the 
COLUBER. 
It comprehends all the terrestrial snakes of large size, 
which, holding a middle place among Ophidians, present 
nothing extraordinary in their organization. They ordi- 
narily inhabit dry places, but some prefer the vicinity of 
