. Cassell's natural history. Animals; Animal behavior. KATUKAL MLVTVJil lieing thus pushed out of sight, and the lalnum appearing to be two-lobed in front; in those with a slender galea, the four lobes of the labium are visible. The legs of the first pair are sometimes converted into fossorial organs, sometimes adapted only for walking or running ; and tliose of the hind pair are generally less elongated than in the succeeding families ; the tarsi are generally of three joints, sometimes fewer. The fore wings, or tegmina, lie horizontally upon the back of the abdomen, covering each other more
. Cassell's natural history. Animals; Animal behavior. KATUKAL MLVTVJil lieing thus pushed out of sight, and the lalnum appearing to be two-lobed in front; in those with a slender galea, the four lobes of the labium are visible. The legs of the first pair are sometimes converted into fossorial organs, sometimes adapted only for walking or running ; and tliose of the hind pair are generally less elongated than in the succeeding families ; the tarsi are generally of three joints, sometimes fewer. The fore wings, or tegmina, lie horizontally upon the back of the abdomen, covering each other more or less towards the base, and usually have a sort of fold at the outer margin, by which they embrace the sides of the abdomen; the wings, which are ample, can be folded into a very small compass, but the extremity of the anterior part of them, which is often marked off from the" rest of the wing, is gathered or twisted into a sort of tail, which projects beyond the tegmina and the end of the abdomen. The wmgs are rarely wanting. The abdomen itself shows nine distinct dorsal and eight ventral half segments, and at its extremity a pair of long, many-jointed cerci. The females of some genera also possess a long, slender, cylindrical ovipositor, which has a slight swelling at its extremitv. A curious fact relating to these insects is that the fecundation of the females is effected by tlie agency of spermatophores of peculiar construction. As most people are aware, by their experience of the common House Cricket, the males of these animals are endowed with an uncommon power of noise-making. The stridulation in the case of all the musical species of this family is effected by the rubbing of the tegmina over one another, in a manner so well desciilied )iy Professor Westwood, that we cannot do better than borrow his words. He says—" In the males (if the House and Field Crickets, on the internal maigin, about one-third of its length from the base, a thickened point IS observ
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecta, booksubjectanimals
