4. Claws unarmed. Tegmina lobe-like, either perfectly developed or entirely absent. The winged species are all American, the apterous are both African and Australian. Tribe 9. PHASMIDES. 4′. Claws toothed on the inner side. Tegmina spine-like. Wings well developed. The species are Asiatic. Tribe 10. ASCHIPASMIDES. (Fig. 150, _Aschipasma catadromus_.) 2′. Antennae shorter than the anterior femora,[209] formed of not more than 20 joints. Old World species. 3. Body slender. Apterous. Tribe 11. BACILLIDES. 3′. Body very broad, lamina-like. Either wings or tegmina present. Tribe 12. PHYLLIIDES. (Fig. 155, _Phyllium scythe_, male; Fig. 154, _idem._, female.) {279}CHAPTER XII ORTHOPTERA _CONTINUED_—ACRIDIIDAE FAM. VI. ACRIDIIDAE—LOCUSTS AND GRASSHOPPERS. _Orthoptera with the hind legs differing from the others by being more elongate and having their femora broader near the base. Antennae short, with less than 30 joints. No exserted ovipositor in female. Tarsi short, with three distinct joints. The auditory organ placed on the side of the upper part of the first abdominal segment._ [Illustration: FIG. 165.—_Tryxalis nasuta_, female. Natural size. Europe.] We commence the consideration of the saltatorial Orthoptera with the family Acridiidae. It includes the grasshoppers of our native fields as well as the destructive migratory locusts of foreign countries, and is the most numerous in species and individuals of any of the Orthopterous families. Our native grasshoppers, though of small size, give a very good idea of the Acridiidae. Active little Insects, with large head, conspicuous {280}eyes, laterally somewhat compressed body, long hind legs with femur directed upwards and backwards, the knee-joint forming an acute angle, the organs of flight pressed to the sides of the body, our common grasshoppers represent the Acridiidae quite as truly as do the gigantic exotic forms, some of which measure 9 or 10 inches across the expanded wings. [Illustration: FIG. 166.—Front of head of _Porthetis_ sp. Transvaal.]