. The animal creation: a popular introduction to zoology. Zoology. 380 SERPENTS. siognomy are so peculiar, and the impression wliicli their look creates is so vivid, that they may, for the most part, be immediately recognised by any one who has ever attentively examined a single species. " Their jaws are generally weak; the under one is provided with a series of sharp-pointed teeth, but the upper jaw is destitute of any, except the moveable poison fangs. The head is extremely broad, flattened on the crown, and heart-shaped or triangular. In- stead of being covered by plates, as in the har
. The animal creation: a popular introduction to zoology. Zoology. 380 SERPENTS. siognomy are so peculiar, and the impression wliicli their look creates is so vivid, that they may, for the most part, be immediately recognised by any one who has ever attentively examined a single species. " Their jaws are generally weak; the under one is provided with a series of sharp-pointed teeth, but the upper jaw is destitute of any, except the moveable poison fangs. The head is extremely broad, flattened on the crown, and heart-shaped or triangular. In- stead of being covered by plates, as in the harmless races, it is clothed in scales similar to those of the. Fig. 311.—heads of poisonous snakes of different genera. back. Their eyes are small, have a vertical puiDil, are deep sunk in the sides of the head, and over- shadowed by the projecting plates of the eyebrow. The upper lip is swollen, and hangs down in order to conceal the long fangs. In form they are heavy and squat, the body being pretty thick in the middle, somewhat compressed; the back slightly keeled, covered with rough keeled scales, while the belly is covered with broad band-like shields or scuta. The tail is short, conical, and thick, but never blunt at the tip. " Their manners, habits, and method of killing their prey are very characteristic. Their dull, heavy dis-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jones, Thomas Rymer, 1810-1880. London : Society for Promoting Knowledge
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Keywords: ., bookauthorjo, bookcentury1800, bookdecade1860, booksubjectzoology
