SYNOPSIS OF THE ORTHOPTERA OF WESTERN EUROPE. 



in 



majority of genera the wings are rudimentary, 

 only as stridulating organs in the male, and 

 female; the ovipositor is usually long and sword 

 or gently curved. But the most characteristic 

 of a pair of free lobes, called plantulse, on the 

 segment of the posterior tarsi. 



Table of Genera. 

 1. Presternum with two spines (except in the single 

 species, Anonconotus apenninigenus) . 

 2. Hinder tibiae with four terminal spines beneath, 

 of which the two outer ones are the longer. 

 3. Plantulas short and inferior, much shorter 

 than first tarsal segment (all femora un- 

 spined beneath ; pronotum rugose, with 

 central keel) 

 3.3. Plantula? longer, nearly as long as first 

 tarsal segment, lateral. 

 4. Elytra and wings perfectly developed or 

 abbreviated ; cerci of s conical, pointed ; 

 ovipositor curved downwards, the apex 

 obliquely truncate 

 4.4. Elytra rudimentary; ovipositor curved 

 upwards, pointed 

 2.2. Hinder tibiae with two terminal spines. (Elytra 

 always squamiform, wings abortive.) 

 3. Plantulse as long as, or longer than, first tarsal 

 segment. 

 4. Cerci 3 conical 



4.4. Cerci s conical but toothed on inner side 

 at base 

 3.3. Plantulse much shorter than first tarsal 

 segment (cerci j laminate). 

 4. Pronotum strongly produced backwards, 

 almost entirely covering elytra in both 

 sexes 

 4.4. Pronotum truncated posteriorly, elytra 

 almost entirely free 

 1.1. Presternum unarmed (posterior tibia? with four 

 terminal spines, except in Ctenodecticus pupulus, 

 Bol., and in the genus Asterastes, Br.). 

 2. Anterior tibia? with three spines above. 



3. Elytra and wings squamiform ; pronotum 

 convex above or plane, with central keel 

 absent or almost obsolete. 

 4. Plantula? surpassing first two tarsal seg- 

 ments 

 4.4. Plantulse not surpassing first tarsal seg- 

 ment. 

 5. Posterior tibia? with two terminal spines 

 (all femora unarmed beneath ; ovipositor 

 curved) 

 5.-5. Posterior tibia? with four terminal spines 

 beneath. 

 (>. Ovipositor straight, obliquely truncate 



at apex 

 6.6. Ovipositor more or less curved up- 

 wards, pointed 

 3.3. Elytra and wings perfectly developed, or 

 abbreviated ; pronotum plane above with 

 median carina in the posterior portion . . 

 2.2. Anterior tibiie with four spines above. (Pro- 

 notum plane, with distinct median carina.) 

 Elytra and wings perfectly developed 



and the elytra present 

 mere side flaps in the 

 -shaped, either straight 

 feature is the presence 

 underside of the first 



1. Anonconotus, Cam. 



2. Gampsocleis, Fischer. 



3. Pterolepis, Ramb. 



4. Scirtob.enus, Pant. 



5. Bhacocleis, Fieb. 



6. Thvreonotus, Serv. 



7. Antaxics, Brunner. 



8. CTENonECTicrs, Bol. 



9. Anterastes, Brunner. 



10. Pachytrachf.lus, 



Fieb. 



11. Olynthosckijs, 



F. do W. 



12. Platyci.ei8, Fieb. 



13. Df.ctii ds, Serv. 



