1889.] 453 



1. — SCHISTOCERCA PEEEGRINA, OHv. 



Acrydiwm peregrinum, Olivier, Voyage Emp. Ottoman, ii, p. 424. 

 Acridium (Schistocerca) peregrinum, Stal, Bee. Orth., i, p. 65. 

 Schistocerca peregrina, Brunner, Prod, der Eur. Orth., p. 215, fig. 50. 



Yellow or greenish-yellow, with fuscous markings. Head with the vertex broad, 

 depressed in the middle, with raised edges ; frons with a depression around the 

 central ocellus, otherwise not sulcate, occiput with a dark streak on each side. Pro- 

 notum constricted anteriorly, suddenly widening out behind the third transverse 

 furrow ; anterior margin not angled, posterior margin bluntly angled with a thickened 

 edge ; median ridge not elevated, crossed by three deep furrows, behind which it 

 is more clearly defined. Elytra with the mediastinal and scapular areas, and the 

 basal part as far back as the dividing vein, yellowish, the rest of the elytra subhyaline, 

 transverse veins pale, except at the fuscous spots. Fuscous mottlings all over the 

 elytra formed by one or a number of adjoining cells being bordered with fuscous. 

 Wings hyaline, with the veins ferruginous, sometimes rosy towards the base. Pro- 

 sternum produced into a long, straight, central projection. Supra-anal- plate S 

 sulcate in the middle, pointed posteriorly. Subgenital lamina S produced far back- 

 wards, curved upwards, with a triangular notch at the apex. Length, 65 — 70 mm. 



In 1869 this species was found in considerable numbers in the 

 Midland and Southern Counties of England, also near "Waterford, in 

 Ireland (Proc. Ent. Soc. Lond , 1869, xxviii). The most northerly- 

 locality reached seems to have been Burton-on-Trent, unless two 

 unnamed specimens from Yorkshire, referred to by Mr. W. D. Roebuck 

 in his paper "Locusts in Yorkshire" (loc. cit., p. 145), were of this 

 species. Since 1869 there seems to be no record of its capture here. 

 Brunner tells us that its proper home is North Africa, as far south as 

 the river Senegal and the Bed Sea, and that it has also occurred in 

 Corfu, the Balearic Islands, Portugal and Syria. In my collection are 

 several specimens from the collection of the late Sir Sidney Saunders, 

 taken in 1845 in Albania. 



vi.— TETTIX, Charp. 



This genus may be at once distinguished from the rest of the 

 Acridiidce by the small size of the species, by their having the pro- 

 notum produced posteriorly into a long process, and by the absence 

 of pulvilli or cushions between the claws. Brunner describes six 

 species as European, of which we have two in this country. 



Table of Species. 



1 (2) Pronotum tectiform, with the median ridge considerably elevated ; process 



not reaching back beyond the posterior knee-joints... 



1. bipunctatus, Linne. 



2 (1) Pronotum more flat, with the median ridge not so much elevated ; process 



reaching beyond the posterior knee-joints 2. subulatus, Linne". 



