2 OKTHOPTERA 



2. Subgenital plate of the male without styles, elongate, incurved and apiially 



tridentatt; African 8. Genus Acilacris. Bolivar. 



— ■ Subgenital plate not as above, with long styles ; European 6. Genus Cyrtaspis, Fischer. 



3. Pronotum posteriorly produced, rounded posteriorly, covering the base of the 



elytra • 



— Pronotum posteriorly truncate or rounded, less produced, the elytra free o. 



4. Elytra longer , usually two or more times as long as the pronotum 5_ 



— - Elytra shorter than, or barely lougei than, the pronotum 2. Genus Thaumaspis, Bolivar. 



5. Elytra three or more times as long as the pronotum 7. Genus Amytta, Karsch. 



— Elytra not over twice as long as the pronotum 4. Genus Nicephora, Bolivar. 



o. Ovipositor smooth; pronotum without distinct humeral sinus. — Plate I, 



F:g. II 5. Genus Meconema, Serville. 



— Ovipositor towards apex tilth strongly serrate margins; pronotum with 



distinct humeral sinus 1. Genus Xiphidiola, Bolivar. 



Unplaced. Based upon a male nymph 3. Genus Orophii.a, Krauss. 



I. Genus XIPHIDIOLA, Bolivar 



Xiphidiola. Bolivar, Mem. Soc. Espan. Hist. Nat., Vol. 1, p. 364(1906). 



Characters. (From original of Bolivar.) — « Statura parva. Fastigium verticis in tuberculum 

 subacuminatum apice ubtuse productum. Frons brevis, transversa, rotundata. Antennae longissimae, 

 annulis fuscis parum distinctis ornatae margines interni scrobum antennarum parum elevati. Oculi 

 globosi prominuli. Pronotum subcylindricum disco postici producto sinu humerali distincto. Elytra 

 apicem femorum longe superiantia angustissima apice angusto rotundata, margine postico recto, vena 

 mediastina explicata, venis radialibus, basi apicque distantibus ante medium sub contiguis, ramo radiali 

 postico ramulos 40 versus inargmem posticum emittente. Alae elytrorum longitudine. Goxae anticae 

 spina; armatae. Tibias anticae utrinque foramine aperta instructs, supra inermes, subtus spinis intus 



4 extus 5 longiusculis armatae. Tibiae intermedia; fere totas incrassatae, subtus extus spinis 6 intus 



5 armatae. Tibiae posticae superne multispinosae in utroque latere 28-3o, subtus tan turn pone medium 

 spinis raris instructae. Ovipositor incurvus marginibus apice valde serrato-denticulatis. » 



Type. — Xiphidiola nigrospinosa, Bolivar. 



Geographical distribution of species. — Spanish Guinea. 



1. X. concolor, Bolivar, Men. Soc. Espan. Hist. Nat. Vol. 1, p. 365 (1906). Spanish Guinea. 



2. X. nigrospinosa, Bolivar, ibidem, p. 365 (1906). Spanish Guinea. 



2. Genus THAUMASPIS, Bolivar 



Thaumaspis. Bolivar, Ann. Soc. Ent. Fr. Vol. 68, p. 768 (1900); Kirby, Syn. Cat. Orth. Vol. 2, 

 p. 373 (1906). 



Characters. (Original, after the autor.) — « Statura parva. Colore pallide-viridi. Fastigium 

 verticis in tuberculum obtusum productum. Frons brevis, transversa. Antennae longissimae, fragiles. 

 Margines interni scrobum antennarum valde elevati. Oculi globosi, prominuli. Pronotum scutatum, 

 antice truncatum vel subsinuatum, postice rutundato-productum, absque sinui humerali. Elytra abbre- 



