CRICKETS — CHOPARD 253 



9. Anterior tibiae with auditory foramen on internal face only 10 



Anterior tibiae with foramina on both faces Tairoua Hebard 



10. Male tegmina overlapping in such a way that the dextral dorsal field almost 



wholly covers the sinistral; venation there obsolete but a distinct depres- 

 sion showing the archet; entire dorsal surface strongly hirsute, elytra not 



at all glabrous Gi-yllosoma Hebard 



Male tegmina with dextral dorsal field covering only slightly more than half 

 the sinistral; dorsal exposed field with venation obsolete, smooth, convex, 

 without lateral angle; dorsal surface more or less polished, weakly or not 

 at all hirsute 11 



11. Form more robust; palpi elongate. Female tegmina slightly over- 



lapping Rehniella Hebard 



Form less robust; size small; paipi very ciougaie. Female tegmina repre- 

 sented by small lateral pads Prosthama Hebard 



12. Anterior tibiae with auditory foramen on internal face only 13 



Anterior tibiae with auditory foramina on both faces 15 



13. Palpi simple. Male tegmina with entire shining dorsal surface weekly 



convex 14 



Palpi with 4th and 6th joints expanded and iiattened. Male tegmina entire 

 dorsal surface flat Palpigera Hebard 



14. Palpi moderately elongate. Male tegmina without trace of venation. 



Niquirina Hebard 



Palpi elongate. Male tegmina with impressed archet and mere traces of 



other venation Amusina Hebard 



15. Impressions of prouotai disk feeble, inconspicuous. Antennae annulate . 16 

 Impressions of pronotal disk distinct. Antennae and limbs not annulate. 



Size veiy large Megalamusus Hebard 



16. Form more robust with shorter limbs 17 



Form slender with very elongate limbs for the group . . Amusodts Hebard 



17. Tegmina with venation reduced, delicate but distinct . . Luzarida Hebard 

 Tegmina with venation greatly reduced, almost obliterated . Luzara Walker 



18. Eyes not strongly projecting; palpi not annulate; limbs short 19 



Eyes more strongly projecting; palpi annulate; Uml>s of medium ieugtii. 



Auacusta Hebard 



19. Lateral lobes of pronotum diverging backwards so that the posterior angle 



is distinctly visible from above. Both sexes with short elytra .... 20 

 Lateral lobes of pronotum nearly perpendicular. Female apterous. 



IMiogryllodes Hebard 



20. Limbs very short. Projection formed by fastigium and face moderately 



developed. Dorsal surface of body moderately hirsute . Cophella Hebard 



Limbs short. Projection weak and very broadly rounded. Dorsal surface 



of body shining, hairs exceedingly minute . . . Paracophella Hebard 



21. Last joint of maxillary palpi truncated at apex only. Legs relatively short 



{Heterogrylli group) 22 



Last joint of maxillary palpi strongly and obhqueiy truncated at apex 

 (Amphiacustae group) ^2 



22. Frontal rostrum as wide as fiist anteuuai juini 23 



Frontal rostrum very narrow 24 



23. Maxillary palpi short; very small for the group (10 mm.j. 



Ewgr>'llina Hebard 

 Maxillary palpi long; size larger (15-16 mm.) . . Dyscophogryllus Rehn 



24. Anterior tibiae nonperforated or with scarcely visible auditory tympana . 25 

 Anterior tibiae with auditory tympana on one or both faces 28 



