SYNOPSIS OF" THE ORTHOPTERA OF WESTERN EUROPE. 



117 



Table of Species. 

 1. Hinder femora with transverse parallel lines ; cerei 



<? incurved ; ovipositor straight 

 1.1. Hinder femora plain ; cerci i quite straight; ovi- 

 positor slightly curved 



1. striolatus, Fieb. 



2. gracilis, Br. 



1. Pachytrachelus striolatus, Fieber. 

 Reddish-testaceous, marked with black. Length of body, 18mm. 



$ , 23mm. $ ; of pronotum, 6mm. $ , 6-5mm. ? ; of elytra, 3mm. 

 $ , 2mm. 5 ; of posterior femora, 22mm. $ , 23mm. ? ; of ovipositor, 

 20mm. ? . 



A south-eastern species that occurs in long grass in the Tirol ; also 

 at Lago Maggiore. 



2. Pachytrachelus gracilis, Brunner. 



Chestnut ; femora plain. Length of body, 13mm. $ , 15mm.- 

 18mm. ? ; of pronotum, 4mm. $ , 5mm. -6mm. $ ; of elytra, 3mm. 

 3 , 1mm. -2mm. 2 ; of posterior femora, 17mm. $ , 18mm. -19mm. 

 $ ; of ovipositor, 16mm. -17mm. ? . 



Occurs with the preceding ; recorded from Recoaro in the south 

 Tirol ; also in Steiermark and Krain, etc. 



Genus XI : Olynthoscelis, Fischer de Waldheim 

 ( = Thamnotrizon, Fischer, Brunner et auctorum). 

 This is an important genus, containing about twenty species ; they 

 are powerful and active insects, and live often in the densest thickets and 

 jungles. It is characterised by the unarmed prosternum, three spines 

 on the upperside of the anterior tibiae, squamiform elytra, abortive 

 wings, short plantulae, which do not exceed the first tarsal segment, 

 four terminal spines on the posterior tibias beneath, and more or less 

 incurved ovipositor, pointed at the apex. 



Table of Species. 

 1. Pronotum in both sexes produced far backwards over 

 abdomen ; elytra <? scarcely surpassing pronotum ; 

 hinder femora with inner margin of underside spined. 

 2. Subgenital lamina i with lobes set with inner 

 angle acute, the lateral band black right up to 

 the margin 

 2.2. Lamina subgenital <f with lobes set with 

 inner angle obtuse ; the lateral band separated 

 from margin by a pale line 

 1.1. Pronotum truncate behind ; elytra i almost entire- 

 ly free; posterior femora unarmed beneath. 

 (Subgenital lamina <? scarely emarginate, of ? 

 transverse.) 

 2. Side flaps of pronotum with broad white border 

 on hinder margin. 

 3. Pronotum with side flaps bordered with white 

 at hinder edge alone ; irons i black, of ? , 

 pale, with black markings; elytra i straw- 

 coloured above 

 3.3. Pronotum with side flaps bordered with 

 white behind and on lower margin, a pale 

 band including the dark stripe ; frons 

 marbled with dark reddish ; elytra cf dark 

 above. 

 4. Large; (21mm. -30mm.) 

 4.4. Smaller ; (14mm. -21mm.) 

 2.2. Side flaps of pronotum with a very narrow 



1. chabrieri, Charp. 



2. brdnneri, Targ. 



3. apteros, Fabr. 



I. i kmokatus, Fieb. 

 ■3. pallax, Fischer. 



white border 



6. griseo-aptera, Linn. 



