5. Antennae inserted at the edge of the eyes. Pronotum unarmed. Tegmina present in each sex. Anterior tibiae furnished on the outer side with an apical spine. Posterior tibiae furnished beneath with four apical spines. Tribe 12. EPHIPPIGERIDES. 5′. Antennae inserted distinctly below the eyes. Pronotum spinous. Elytra in the females wanting. Anterior tibiae without apical spine on either side. Posterior tibiae beneath with two apical spines or with none. Tribe 13. HETRODIDES. 2′. Anterior tibiae without auditory cavities. Tegmina with no tympanum. Tribe 14. GRYLLACRIDES. (Fig. 201, _Schizodactylus monstrosus_.) 1′. Tarsi distinctly compressed (most of the species apterous.) Tribe 15. STENOPELMATIDES. (Fig. 202, _Anostostoma australasiae_; Fig. 197, _Dolichopoda palpata_.) {330}CHAPTER XIV ORTHOPTERA _CONTINUED_—GRYLLIDAE, CRICKETS FAM. VIII. GRYLLIDAE—CRICKETS. _Antennae very slender, generally long and setaceous; hind legs long, saltatorial. Tegmina with the outer portion deflexed on to the side of the body, and with the inner part lying flat on the body. Tarsi usually three-jointed (rarely two- or four-jointed). Female with a long ovipositor (except in Gryllotalpides). Apterous forms numerous._ The Gryllidae are closely connected with the Locustidae, the musical and auditory organs being in both similarly situate, and the female in both possessing, in most of the tribes, an elongate exserted ovipositor. The two families differ in the number of joints of the tarsi, in the form of the tegmina, and in the fact that in Gryllidae the portion of the wing modified for musical purposes consists of a larger portion of the organ—according to de Saussure, the discoidal as well as the anal area. [Illustration: FIG. 204.—House-cricket, _Gryllus_ (_Acheta_) _domesticus_, male.] The family would be a very natural one if we were to exclude from it the mole-crickets which have fossorial front legs and no ovipositor, and the Tridactylides, which also are {331}destitute of ovipositor, and have short antennae, consisting of about ten joints. The head is generally very large; ocelli are present, though usually imperfect; the extremity of the body bears a pair of remarkably long cerci. The hind tibiae are usually armed with very strong spines; the first joint of the hind tarsus is elongate, and terminates in two spines, between which the small second joint is often almost completely concealed; the feet are not provided beneath with pads, but only bear remote setae.