7OCLELO2s ae kar Saye. Sl 7Arrica. Causus rhombeatus; Bitis arietans, the puff-adder; Cerastes cornutus, the horned viper; and Hchis carinatus.CoLuBRIDAE. Among the Colubridae, note may be made of the following: America. Micrurus! fulvius, the harlequin snake; M. corallinus, M. frontalis, and M. marcgravit, or coral snakes.Asta. Naja naja, the cobra; N. bungarus, the king cobra, hamadryas or skull-breaker, the largest poisonous snake known, measuring sometimes 5 meters in length; Bungarus candidus, the common krait; B. fasciatus, the banded krait.Arrica. Naja haje, the Egyptian asp, and N. flava.OcrantA. Diemenia textilis, the brown snake; Pseudechis porphyriacus, the black snake; Denisonia superba, the copperhead (of Australia); Notechis scutatus, the tiger snake; Acanthopis antarcticus, the death-adder.Evropre. Vipera berus, the European viper.Besides the above mentioned Colubridae, which are land species, there are the water species (subfamily Hydrophiinae), e. g., Platurus and Enhydrina, which are found in several zones of the Pacific and Indian Ocean and are deserving of notice.Porson GuANpbs. The poison is the secretion from the supra-labial glands of the Ophidians. These glands are found on either side of the head below and back of the orbit, corresponding to the parotid glands of the mammals.The poison gland, properly defined, is classed with the serous glands, although the secretion contains a great deal of mucous substance expelled from cells existing in the excretory canal 'close to its termination, and from more or less abundant alveoli surrounding the same. Its dimensions, which are generally in proportion to the size of the snake, and are relatively larger in the American and Asiatic species than in the European, sometimes reach considerable proportions, as observed, for example, in the species of the genus Doliophis, whose glands extend to the precordial region. The gland is surrounded by a fibrous capsule 1 N.B. Micrurus as the earlier name must replace the more commonly used Elaps. »OSCLELO Te soar AG oe BG ky SNAKE POISONING 5 ' O. Magalhaes. Contr. para o estudo dos ophidios brasileiros. Repr.