. Elementary text-book of zoology. Zoology. C1IILOPODA. 519 eyes. There are always two pairs of jaws (fig. 425) ; the mandibles (Md) and one pair of maxillae (Mx1), the latter bearing a short palp. In addition, the first pair of (thoracic) legs (Mx'} forms a kind of tmderlip which often, bears two long palps. The next pair of legs always approaches the head as a kind of maxilliped, and forms by the growing together of its basal parts a consider- able median plate, on the right and left of which great, four-jointed poison claws (Mf} project. The remaining ap- pendages arise from the sides of th
. Elementary text-book of zoology. Zoology. C1IILOPODA. 519 eyes. There are always two pairs of jaws (fig. 425) ; the mandibles (Md) and one pair of maxillae (Mx1), the latter bearing a short palp. In addition, the first pair of (thoracic) legs (Mx'} forms a kind of tmderlip which often, bears two long palps. The next pair of legs always approaches the head as a kind of maxilliped, and forms by the growing together of its basal parts a consider- able median plate, on the right and left of which great, four-jointed poison claws (Mf} project. The remaining ap- pendages arise from the sides of the body segments, the last pair being frequently elon- gated so as to project back- wards far behind the last seg- ment. The generative organs open by a single aperture at the hind end of the body. There is no male copulatory apparatus. The young, when hatched, have seven pairs (Lithobius) or the entire number of appen- dages (Scolopendra}. The Chilopoda feed entirely on animals, which they bite with the poison claws and kill by the secretion of the poison gland which flows into the wound. Certain tropical species of large size are able to inflict wounds which are dangerous even to man. Fam. Scolopendridae. Autennaa long and thin with a, relatively small number of joints, only a few ocelli. The seg- ments of the body are sometimes equal, sometimes unequal. Scolopendra (with nine pairs of stigmata) iji/jnntcn L., found in the East Indies. Si: /»<»:•</- hint, from South Europe. Grojrtiilvs subterraneiis, eli'i-triai* L. Fain. Lithobiidae. With long, many- jointed antennas and numerous ocelli. Some of the tcrga are greatly developed, and partially over-lap those of. FIG. 425.—Oral apparatus of Scolo/H'i>ili-<i niutica (after Stein). Ob, Upper- lip ; Md, mandibles ; Hx', maxilla ; MX', first pair of legs or second maxilla?; Mf, poison claws (maxilliped); Ta, Please note that these images are extracted from scanned page images that may have been digitally enh
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
