SYNOPSIS OF THE ORTIIOPTERA OF WESTERN EUROPE. 207 



It is a mountain insect, occurring in many places in central 

 Europe. It is known in Sweden and Norway and the north of 

 Germany ; in Belgium it is rare, being recorded from Lanaeken. In 

 France it occurs in nearly every mountain in the country ; it is found 

 in all south Germany and Switzerland, in the Upper Engadine, and 

 the Jura of Solothurn, Gysliflnh near Arau, Albis, Schnebeihorn, 

 Bachtel, Glarus, Disentis, but not below S-900 metres. South of the 

 Alps it has been taken near Turin. In Spain it is found in the north 

 and east. 



Genus 2 : Quirogesia, Bolivar. 



The single species is known by the dense venation of the basal half 

 of the elytra and by the bright red wings with black band, outside 

 which the apical half is hyaline, and the apex tipped with black. 



1. Quirogesia brullei, Sauss. 



Length of body, 23mm. J , 30-32mm. ? : of pronotum, 4*8mm. 

 (? , 6-5mm. ? ; of elytra, 24mm, <? , 20nim. ? . 



This handsome insect is rare ; it is recorded from the south of 

 Spain, at Seville ; it also is found in Algeria and the Canary Islands. 



Genus 3 : CEdaleus, Fieber. 

 This genus includes a number of species, all with yellow wings 

 banded with black, that are widely distributed throughout the Old 

 World. Only one species occurs in Europe. 



1. QiIdaleus nigrofasciatus, de Geer {=flavus, Linn.). 



Testaceous or green, varied with black ; pronotum with four crossed 



yellow bands ; wings yellow in basal half, with a broad arched black 



band. Exceedingly variable in size. Length of body, 18mm. -24mm. 



(J , 80mm. -38mm. $ ; of pronotum, 4mm.-5-6mm. 3' , 5-5mm.-8mm. 



? ; of elytra, 16mm. -27mm. S" , 25ram.-34mm. $ , 



Common in central and southern Europe. In France it is common, 

 occasionally occurring as far north as Paris ; it is quite common 

 throughout the west, centre and south. In Switzerland, it is found in 

 Valais, and in Germany, Rudow records it as far north as Mecklenburg. 

 In Austria it is found commonly at Oberweiden, also at Laierling, 

 Briick, Neusiedlersee; also in the south Tirol. In Italy it is common, 

 as well as throughout Spain and Portugal. 



Genus 4 : Pachytylus, Fieber. 

 I'his genus includes the true migratory locusts of the Old World 

 (with the exception of Scltistocerca perenrina , Oliv., vid. sub. Acridiidae). 

 It is characterised by the compressed pronotum, with a blackish stripe 

 on each side, and hyaline wings, faintly tinted with yellowish or greenish 

 near the base. Two species occur in Europe, but one is practically 

 confined to the eastern countries. 



Table of Species. 

 1. Pronotum obtuse on fore border; the crest but little 

 raised; i about equal to ? in size; pronotum, 

 seen from side, straight above, not tumid in 

 prozona ; hind tibite yellowish ; larvfe with very 

 broad black bands oil pronotum .. .. .. I. migratobius, L. 



1.1. Pronotum acute-angled in front; the crest strongly 

 elevated ; j much smaller than ? ; prono- 



