. Un manuel de zoologie élémentaire . Zoologie. Manuel de zoologie élémentaire 292 lots de 150 œufs, et ce, avec la brièveté de sa vie, l'histoire, il permet, dans des circonstances favorables, pour devenir extrêmement nombreux. La Mouche domestique sont de dangereux parasites, parce qu'ils reprennent, d'excréments, mucus, etc., les bacilles de la typhoïde, diarrhée, bacille, et d'autres maladies, les portent sur leurs jambes et dans leur tube digestif, et d'infecter la nourriture avec eux. Mouches (Calliphora), qui pondent leurs œufs dans la chair en décomposition ou frais, y compris que de blessures ouvertes, ont une histoire de vie similaires. 7. Aphanipter

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. A manual of elementary zoology . Zoology. 292 MANUAL OF ELEMENTARY ZOOLOGY batches of 150 eggs, and this, with the shortness of its life- history, enables it, in favourable circumstances, to become immensely numerous. House flies are dangerous pests, because they pick up, from excrement, sputum, etc., the bacilli of typhoid, diarrhoea, tubercle, and other diseases, carry them on their legs and in their alimentary canal, and infect food with them. Blow flies (Calliphora), which lay their eggs in fresh or decaying flesh, including that of open wounds, have a similar life-history. 7. Aphaniptera.—Jaws for piercing and sucking. No wings. Metamorphosis complete. Fleas. The body of. ABC Fig. 199.—A semi-diagrammatic representation of the way in which bacteria are borne upon the foot of a fly. A, the whole foot, showing pads, hooks, and hairs; B, a single hair more highly magnified ; C and C, bacteria.—From Shipley. these insects is compressed from side to side (thus in the opposite direction from that of the bed bug), their eyes are small or absent, and their legs very long and strong. They spend part of their time on the body of the host and part on the ground, where they lay their eggs. The larvse have long, narrow bodies, without legs but with bristles by which they pull themselves about actively. They have biting mouth-parts and feed on any kind of organic matter which they find in dust, etc. After about twelve days (in the case of the Human Flea, Pulex irritam) they spin a cocoon and pupate. Various species infest different warm-blooded animals, but many can live for a time on other than their proper hosts. The plague is transmitted by rat fleas.. 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 work.. Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton

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