THE PRINCIPAL SPECIES OF POISONOUS SNAKES 
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or 
Habitat : Sumatra, Java, Borneo, Natuna Islands. 
(17) L. borneensis.—Scales in 19—21 rows; 10—11 series of 
scales between the supraocular shields ; 152—168 ventrals ; 43—65 
subcaudals. 
Total length, 770 millimetres ; tail 105. 
Habitat : Borneo, Sumatra. 
C. (18) L. waglert.—Scales in 19—27 rows, 127—154 ventrals ; 
45—55 subcaudals ; tail prehensile. 
Colour green, with darker or hghter markings, black and yellow, 
or nearly entirely black. 
Total length, 980 millimetres ; tail 150. 
Habitat: Malay Peninsula and Archipelago. 
C.—AF RICA. 
In Africa, poisonous snakes abound throughout the whole of the 
tropical and sub-tropical zones. The fatal accidents to human 
beings caused by them in this continent are fewer than in India, 
since the population of Africa is less dense, but several species 
occur, the venom of which is especially dangerous to life. 
These species belong in nearly equal numbers to the Families 
COLUBRID and VIPERIDÆ. 
I.—CoLuUBRIDA. 
The poisonous COLUBRIDÆ of Africa are all included in the 
Subfamily Hlapine, of which the following are the eight principal 
genera :— 
(a) Boulengerina. 
(b) Hlapechis. 
(c) Naja. 
(d) Sepedon. 
(e) Aspidelaps. 
(f) Walterinnesia. 
(g) Homorelaps. 
(h) Dendraspis. 
