. Beginners' Zoology . Fig. 6. — Scarlet Snake yLampropeltis). REPTILIA 147 scarlet, yellow, and black (coloured ) of the same tints,and it is hardly distinguishable from the harlequin. The. Fig. 279. — Gila Monster (Helodert/ia suspecfum), oi Arizona. If poisonous, itis the only instance among lizards. It is heavy-built, orange and black mottled,and about 16 inches long. Compare it with the green lizard (Fig. 280). scarlet snake is said to mimic the harlequin snake. It alsoimitates the quiet inoffensive hab-its of the harlequin snake, whichfortunately does not strike exceptunder the grea
. Beginners' Zoology . Fig. 6. — Scarlet Snake yLampropeltis). REPTILIA 147 scarlet, yellow, and black (coloured ) of the same tints,and it is hardly distinguishable from the harlequin. The. Fig. 279. — Gila Monster (Helodert/ia suspecfum), oi Arizona. If poisonous, itis the only instance among lizards. It is heavy-built, orange and black mottled,and about 16 inches long. Compare it with the green lizard (Fig. 280). scarlet snake is said to mimic the harlequin snake. It alsoimitates the quiet inoffensive hab-its of the harlequin snake, whichfortunately does not strike exceptunder the greatest rattles of the less poisonous but deadly rattlesnake () may be classed as anexample of zvarning sound animals are quick to heedand thus avoid encounters whichmight be destructive to either thesnake or its enemy. Survival of the Fittest. — The twofacts of most far-reaching importancein the history of animals and plantsare: (i) Heredity; animals inheritthe characteristics of their parents,(2) Variation; animals are not ex-actly like their parents. The firstfact gives stability, the second makes
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