3. Supra-anal lamina of both male and female transverse, narrow. Wings, when present, furnished with a triangular apical field. Posterior femora unarmed beneath, or armed with two spines on the anterior margin. Egg-capsules furnished with a longitudinal suture. Tribe 1. ECTOBIIDES. [Anaplectinae Saussure.] 3′. Supra-anal lamina of each sex more or less produced, triangular, or emarginate. Wings, when present, without apical field. Posterior femora with both edges spiny. 4. Supra-anal lamina of each sex triangular, not notched. Cerci projecting much beyond this lamina. 5. Pronotum and elytra smooth (_i.e._ without peculiarity of surface other than punctuation). The radial nervure of the wing giving off several parallel branches, pectinate on the anterior margin (except in the genus _Abrodiaeta_). Tarsal joints without pads. Tribe 2. PHYLLODROMIIDES. [Blattinae Saussure.] 5′. Pronotum and elytra holosericeous. Radial nervure of the wings giving off irregular branches on the anterior margin (ulnar vein many-branched). Tarsal joints furnished with pads. Tribe 3. NYCTIBORIDES. 4′. Supra-anal lamina of males more or less four-sided, with obtuse angles, of females broad, rounded, or lobed. Cerci not projecting beyond the lamina. (Tarsal joints with distinct pads.) Ulnar nervure of the wings giving off parallel branches towards the vena dividens. Tribe 4. EPILAMPRIDES. {241}2′. The last ventral plate of the female furnished with valves. Tribe 5. PERIPLANETIDES.[170] (Fig. 119, _Periplaneta australasiae_.) 1′. Femora unarmed beneath. (In the tribe Panesthiides the anterior femora are frequently armed with two spines.) 2. Supra-anal lamina of each sex more or less produced, posterior margin notched. 3. A distinct pad between the claws. Tribe 6. PANCHLORIDES. 3′. No pad between the claws, or only an excessively small one. 4. Wings with a folded fan-like anal field. Pronotum smooth. Tribe 7. BLABERIDES. (Fig. 132, _Blabera_ sp. wings.) 4′. Anal field of the wing with a single fold. Pronotum more or less pilose. Tribe 8. CORYDIIDES. (Fig. 128, _Corydia petiveriana_. Fig. 118, _Heterogamia aegyptiaca_.) 2′. Supra-anal lamina of each sex, short, transverse, posterior margin straight or rounded. 3. Subgenital lamina of the male somewhat produced, furnished with a single style. Tarsal claws with a distinct pad (except in the genus _Paranauphoeta_). 4. Anterior portion of the wings pointed, either the apical field of the wing very much produced, or the wings twice as long as the tegmina, folded in repose. Tribe 9. OXYHALOIDES. [Plectopterinae Saussure.] (Fig. 129, _Hypnorna amoena_.)