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. Cassell's natural history. Animals; Animal behavior. TUE CJULOPUJIS. 153 curved, tapering joint, terminated \>y a sharp, })erforated claw, through which tlu? poison secreted hy a gland can be poured into the wounds inflicted Ijy the point. The whole of this apparatus lies flat upon the under surface of the head, usually closing the mouth from beneath entirely. The segments behind the head, which vary in number between sixteen and over a hundred, are formed by separate Jiorny dorsal and \entral plates, joined at the sides by a niendjranous part in which the stigmata are usually situated. E
. Cassell's natural history. Animals; Animal behavior. TUE CJULOPUJIS. 153 curved, tapering joint, terminated \>y a sharp, })erforated claw, through which tlu? poison secreted hy a gland can be poured into the wounds inflicted Ijy the point. The whole of this apparatus lies flat upon the under surface of the head, usually closing the mouth from beneath entirely. The segments behind the head, which vary in number between sixteen and over a hundred, are formed by separate Jiorny dorsal and \entral plates, joined at the sides by a niendjranous part in which the stigmata are usually situated. Each of these plates more or less overlies the one behind it, and in .some forms, the alternate dorsal plates are so large as to cover those between them, causing the number of segments to appear only half what it really is. In these cases, however, the ventral plates indicate tlie'true number of seg- ments. The rudimen- tary condition of the <lorsal plates of th'' first or first and second segments has alread}' lieen mentioned ; and these, and the third segment, are to be regarded as constitut- ing a thoracic region liomologous with that of Each seg- ment of the body, from the third on- wards, bears a pair of jointed legs, which spring from the borders â of the ventral plates and stand out from the sides of the body. They are usually of moderate length, but sometimes very long. The legs attached to scolopemiua , the last segment are generally much longer and stronger than the rest, and differ from them also in being directed back- wards nearly in a line with the body. The antennae are long, composed of many joints, and tajjering in form. The stigmata are usually placed on the alternate segments, and lead into a system of trachea? closely resembling the type seen in insects. The organs of reproduction open at the posterior ex- tremity of the body, and the impregnation of the females is said to be effected by the agency of sper- matophores, which the males
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecta, booksubjectanimals