170 the entomologist's record. 



reaching the 6th abdominal segment in the $ , the 4th in the 2 • 

 Length of body, 18mm. $ , 19mm. -24mm. 2 ; of pronotum, 5-5mm. 

 $ , 6'5mm. 2 ; of elytra, 9mm. $ , 8mm. -9mm. $ ; of ovipositor, 

 7mm. -8mm. ? . 



Discovered in marshy fields among reeds, in the forest of 

 Montauban, near Mail de Criq, and also at Bagneres de Luchon. 



23. Platycleis azami, Finot (Bull. Soc. Ent. Fr., lxi., p. xxxv). 



Resembles 11. roeselii, but larger, and the incision of the subgenital 

 lamina of the male is stronger ; the subgenital lamina of the female 

 has truncate lobes. Length of body, 23mm. -24mm. $ , 20mm. -2Gmm. 

 2 ; of pronotum, 6mm. -7mm. $ 5-5mm.-6-5mm. $ ; of elytra, 

 11mm. -12mm. J , 10mm.-10-5mm. 2 ; of ovipositor, 7mm.-7*5mm. 2 . 



Between Cogolin and le Foux, in August. 



Genus XIII : Decticus, Serville. 

 This genus includes the largest species of the family occurring in 

 western Europe ; it may be recognised by the characters given in the 

 table ; the ovipositor is long and narrow, and gently upcurved ; the 

 elytra and wings are perfectly developed, and marked with black 

 spots. 



Table of Species. 

 1. Anal segment $ broadly ernarginate, with the 

 lobes distant ; cerci j toothed in the middle ; 



subgenital lamina ? triangular; size medium .. 1. verrucivorus, Linn. 

 1.1 Anal segment <? shortly excised, the lobes con- 

 tiguous ; cerci c? toothed at the base ; sub- 

 genital lamina ? transverse . . . . 2. albifeons, Fabr. 



1. Decticus verrucivorus, Linn. 



Stout and large ; brown or green ; elytra and wings generally 

 about as long as abdomen in northern specimens, but somewhat longer in 

 southern examples ; elytra brown or green, with a row of black spots; 

 elytra somewhat narrowed apically ; ovipositor gently and regularly 

 curved upwards, narrow. Length of body, 26mm. -38mm. $ , 30mm.- 

 44mm. 2 ', of pronotum, 8-3mm.-10*5mm, $ , 8mm. -11mm. $ ; of 

 elytra, 25mm. -35mm. $ , 23mm. -30mm. 2 ', of posterior femora, 

 27mm. -35mm. $ , 28mm. -37mm. 2 ; of ovipositor, 17mm. -26mm. 2 • 



Occurs throughout Europe, from Lapland to Greece. 



In Sweden it is common, and in England it is known to occur, but 

 very sparingly ; it seems to have been less rare 60 years ago in Hants, 

 where Bingley and Curtis took it near Christchurch, but since then it 

 has only been taken at St. Margaret's Bay near Dover. In France, it 

 is common throughout the country. In Belgium it is fairly common, 

 especially in the Ardennes ; it formerly occured at Schaerbaeck near 

 Brussels, but has not been found there recently. In the Alps it is 

 found up to an elevation of nearly 7000 feet, and in Spain it seems to 

 be found only in the mountains. 



Azam describes a variety under the name buyssoni, in which the 

 pronotum is more rounded posteriorly, the spot on the side flaps more 

 cleanly marked, the elytra longer, and the points of the supra-anal 

 plate straight, instead of curved, and also the excision of the sub- 

 genital lamina stronger ; this form has been taken at Puy de Crouelle, 

 Clermont Ferrand. 



2. Decticus albifrons, Fabricius. 



Easy to distinguish from the preceding by its much larger size, 



