Venoms; venomous animals and antivenomous serum-therapeutics . fulagony less than half an hour after the wound was inflicted. Fowls THE FBINCIPAL SPECIES OF POISONOUS SNAKES 47 ill most cases die in less than two minutes. A horse succumhedin half an hour, and another in eleven hours. It appears that in India many cattle are killed by Daboias whilegrazing {Fayrer). (b) Pseudocerastes. (Fig. 29.) This genus is represented by a single species {Pseudocerastespcrsicus), which appears to be exclusively confined to Persia. The head is very distinct from the neck, and covered with smallimbricate scale
Venoms; venomous animals and antivenomous serum-therapeutics . fulagony less than half an hour after the wound was inflicted. Fowls THE FBINCIPAL SPECIES OF POISONOUS SNAKES 47 ill most cases die in less than two minutes. A horse succumhedin half an hour, and another in eleven hours. It appears that in India many cattle are killed by Daboias whilegrazing {Fayrer). (b) Pseudocerastes. (Fig. 29.) This genus is represented by a single species {Pseudocerastespcrsicus), which appears to be exclusively confined to Persia. The head is very distinct from the neck, and covered with smallimbricate scales ; the eyes, which are small, have vertical pupils;they are separated from the lips bysmall scales. The nostrils aredirected upwards and snout is very short and cylindrical body has 23—25rows of scales ; 151—156 ventrals13—49 subcaudals. The coloration is gray or brown,with four series of large black spots,and the head exhibits two longitu-dinal black streaks behind the eyes,with black. Total length, 890 millimetres; tail 110,. Fig. 29.—Pseudocerastes -persicus.(After Dumeril and Bibron.) The belly is whitish, dotted (c) Cerastes. The vipers belonging to this genus are much more commonin North Africa, and we shall therefore study them in conjunctionwith the African snakes. Cerastes cornutiis alone, the specialhabitat of which is Egypt, is sometimes met with in andon the eastern bank of the Suez Canal. 48 VENOMS (d) Echis. Echis cariiiatus (the Phoorsa). (Fig. 30).—This viper is charac-terised by the subcaudal shields being arranged in a single is savage and very aggressive, being always ready to attack. Itslength does not exceed 600 millimetres at the most. The colourof the body is grey, more or less dark and adorned with streaks,spots, and dots of blackish-brown. The back displays yellowish-
Size: 2038px × 1227px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubject, booksubjectserpents
