. Cuvier's animal kingdom : arranged according to its organization. Animals. 560 INSECTA. Mantis siccifolia [or the Walking Leaf], a species peculiar to the Sechelles Islands, Mauritius, &c., of which the female has very short antennae, with the wing-covers as long as the abdomen, but destitute of wings ; the male is much narrower, with long filiform antennae ; short wing-covers, and wings as long as the abdomen. [Latreille, in the Families Naturelles, Saint Fargeau and Serville, in the Encyclopédie méthodique, the latter in his Histoire naturelle des Insectes Orthoptères, and Gray in his
. Cuvier's animal kingdom : arranged according to its organization. Animals. 560 INSECTA. Mantis siccifolia [or the Walking Leaf], a species peculiar to the Sechelles Islands, Mauritius, &c., of which the female has very short antennae, with the wing-covers as long as the abdomen, but destitute of wings ; the male is much narrower, with long filiform antennae ; short wing-covers, and wings as long as the abdomen. [Latreille, in the Families Naturelles, Saint Fargeau and Serville, in the Encyclopédie méthodique, the latter in his Histoire naturelle des Insectes Orthoptères, and Gray in his Synopsis of Phasmida, have constituted a great number of generic groups detached from those given above, and which are founded upon the variations in the developement of the wings in the different sexes ; the proportions of the thoracic segments, antennae, &c. Messrs. Burmeister and BruUé have considerably reduced the number of these groups in their works upon this order.] THE SECOND FAMILY OF THE ORTHOPTERA,— The Saltatoria,— Has the two hind feet remarkable for the size of their thighs, and for the very spined tibiae thus formed for leaping. The males call their females by making a chirping noise, which is sometimes produced by rubbing an inner part of the wing-covers like a talc-like mirror, against each other with rapidity, and sometimes by a similar alternate motion of the hind thighs against the wings and wing-covers, the thighs acting the part of the bow of a violin. The majority of the females lay their eggs in the ground. This family is composed of the genus Gryllus, Linn.,— Which we divide as follows :— Some have the organ of sound in the males consisting of an inner part of the wing-covers in the shape of a mirror ; the ovipositor of the females is very long, exserted, and often sabre-shaped, and the antennae are either very long and slender at the tips, or of equal thickness throughout, but very short. In some of these, the wings and vdng-covers are
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