SYNOPSIS OF THE ORTHOPTERA OF WESTERN EUROPE. 151 



Synopsis of the Orthoptera of Western Europe. 



By MALCOLM BUIUI, B.A., F.L.S., F.Z.S., F.E.S. 



[Continued from p. 129.) 



Genus XI : Gomphocerus, Thunb. 



This genus is allied to the four preceding genera, but easily 



distinguished by the clubbed antenn;E ; the thickening is especially 



notable in the males. 



Table of Species. 

 1. Caiinaj of pronotum straight. (Elytra very abbre- 

 viated ; wings abortive) .. .. .. ..1. brevipennis, Bris. 



1.1. Carinffi of pronotum sinuate ; organs of tiiglit 

 generally well developed. 

 2. Typical sulcus behind middle ; pronotum gib- 

 bous ; anterior tibiai of g strongly inflated . . 2. sibiricus, L. 

 2.2. Typical sulcus in middle or a little in front. 

 3. Elytra as long as abdomen in s , much 



shorter in ? ; wings shorter than elytra. . 3. livoni, Azam. 

 3.3. Elytra and wings well developed in both 

 sexes. 

 4. Mediastinal area of elytra dilated at 

 base, with an adventitious vein. 

 (Size medium ; colour brown, un- 

 spotted ; antennas tipped with white) 4. rufus, L. 

 4.4. Mediastinal area of elytra not dilated, 

 with no adventitious vein. (Ulnar 

 veins diverging from base.) 

 5. Frontal costa entirely sulcate ; an- 

 tennas almost as long as body, 



very broadly clubbed at apex . . 5. antennatus, Fieb. 

 5.5. Frontal costa smooth ; antennae 

 hardly exceeding half length of 

 body ; antennas moderately 

 clubbed at apex. . .. ..6. iiaculatus, Thunb. 



1. Gomphocerus brevipennis, Brisout. 



Recognisable by the abbreviated organs of flight, and straight keels 

 of pronotum ; it superficially resembles Chorthijipus parallelus, but the 

 clubbed antennte, of course, distinguish it. Length of body, 15mm. 

 S , 15-5mm.-20mm. 2 ; of pronotum, 3-3mm. <? , 3-2mm.-4mm. 2 ; 

 of elytra, G-5mm. J , 3-5mm.-5mm. $ . 



A rare species confined to the Pyrenees, where it occurs in a few 

 grassy places, at an elevation of 5000ft. -6000ft. ; Pic du Midi de 

 Bigorre, Le Vernet near Canigou, Pic du Midi d'Ossau ; on the road 

 from Bareges to Bigorre, Bagneres de Bigorre, Bareges. On the 

 Spanish side it is recorded from Puigdalp and Nuria, in northern 

 Catalonia. 



2. Gomphocerus sibiricus, Linn. 



This species is easy to recognise by the tumid pronotum, and the 

 tibiaB of the male, which are swollen into a large pear-shaped globule. 

 Length of body, 19mm.-20mra. S , 19mm. -22mm. 2 ; of pronotum, 

 4-5mm.-5'2mm. S, 4-5mm.-5mm. 2 ; of elytra, 13mm. -15mm. J, 

 11mm. -13mm. 2 • 



This species occurs in the higher mountains of Europe, but rarely 

 or never below an elevation of 4000ft. It is not a British species, 

 though an undoubted specimen is recorded from Netley by Stephens. 

 In France, it occurs in the Pyrenees, Haut-Rhin, Cauterets, Bareges, 

 Canigou, Chanrousse (Isere), J)ic, Drome in the spring and summer. 

 In Germany it is doubtfully recorded from the Harz mountains and 



