4. First two joints of the tarsi laterally smooth. (Posterior tibiae furnished on each side with an apical spine.) Tribe 1. PHANEROPTERIDES. (Fig. 196, _Microcentrum_; Fig. 199, _Myrmecophana_. Fig. 101, _Poecilimon affinis_.) 4′. First two joints of the tarsi laterally, longitudinally sulcate. 5. Foramina of the anterior tibiae normally open. (Fig. 193, A.) 6. Posterior tibiae furnished on each side with apical spines. 7. Prosternum unarmed. Tribe 2. MECONEMIDES. 7′. Prosternum bispinose or bituberculate. Tribe 3. MECOPODIDES. 6′. Posterior tibiae with no apical spines. (Head prognathous.) Tribe 4. PROCHILIDES. (Fig. 200, _Phasmodes_.) 5′. Foramina of the anterior tibiae forming a chink, or protected by a scale. (Fig. 193, B.) 6. Anterior tibiae with no apical spines. 7. Margins of the scrobes[257] of the antennae prominent. Tribe 5. PSEUDOPHYLLIDES. (Fig. 187, _Cyrtophyllus crepitans_; Fig. 198, _Pterochroza ocellata_.) 7′. Margins of the scrobes of the antennae not prominent. 8. Posterior tibiae furnished above on each side with apical spines, or with a single spine on the side. 9. Posterior tibiae either furnished with apical spines on each side, or only on the inner side. Tribe 6. CONOCEPHALIDES. (Fig. 189, _Copiophora cornuta_.) 9′. Posterior tibiae furnished above with an apical spine placed only on the outer side. Tribe 7. TYMPANOPHORIDES. 8′. Posterior tibiae without apical spines. Tribe 8. SAGIDES. 6′. Anterior tibiae furnished with an apical spine on the inner side.[258] {329}7. The first joint of the posterior tarsi destitute of a free sole-lobe. Tribe 9. LOCUSTIDES. 7′. The first joint of the posterior tarsi furnished with a free sole-lobe. Tribe 10. DECTICIDES. 3′. Antennae more distant from the summit of the occiput than from the labrum, inserted either beneath the eyes or on their inferior border. Tegmina and wings greatly abbreviate, scale-like; when tegmina are present they are furnished in each sex with a tympanum. 4. Third joint of the posterior tarsi shorter than the second. Both anterior and posterior tibiae furnished on each side with a spine. Tribe 11. CALLIMENIDES. 4′. Third joint of posterior tarsi longer than the second joint. Anterior tibiae with no apical spine on the inner side, and posterior tibiae with no apical spine on the outer side.