South African GrassJioppfr.f. 101 



part ; median krcl well developed, cut by all three sulci ; no 

 lateral keels ; the fore margin rounded ; hind margin with 

 a broad, but not deep, obtusangular emargination in its 

 middle. Lateral lobes of the pronotum much longer than 

 higli, htrongly narrowed downwards; their fore margin 

 oblique, feelily sinuate, forming a right augU; with the 

 straight lower margin ; the hind margin more oblicpie tliau 

 the fore margin, slightly concave in its lower part; tlie hind 

 angle a little more than 90". The whole surface of the 

 pronotum, except a callous stripe along the lower margin 

 of the lateral lobes, is very coarsely punctured. Prosternal 

 spine very strongly laterally compressed, short, bent back- 

 wards, with the apex, as seen in profile, angulate. Sternum 

 strongly laterally compressed ; sternal 'plate nearly three 

 times as long as broad, coarsely punctured throughout. 

 Mesosternal lobes elongato-rhomboidal ; their length nearly 

 equal to their joint width ; their inner margins touching 

 each other along the straight median line ; the fore mar- 

 gins forming a very obtuse rounded angle, the hind 

 margins forming a slightly less obtuse angle. ]\Ietastcrnal 

 lobes a little shorter than their joint width at the fore 

 margin, distinctly narrowed posteriorly, touching each other 

 along the median line. Elytra reaching to the middle of 

 the abdomen and almost reaching the hind knees, narrowed 

 towards the lanceolate apex. Wings distinctly shoitcr than 

 the elytra, two and a halt' times as long as they arc broad. 

 The legs as in the genns Ischnacrida. 



Genotype : Pretoriana klerki, sp. n. 



This curious genus is closely related to the genera Ischna- 

 crida and lihamphao'ida, hut is very easily recogniz.d by 

 the quite peculiar shape of the head, as well as of the 

 antennae. 



1. Pretoriana klerki, sp. n. 



? . Antennae reaching to the middle of the mctazona, 

 brown. General coloration buff. Face brown. Sides of 

 the fiistigiura of vertex brown, its middle part paler, with a 

 blackish longitudinal fascia fading gradually towards the 

 occiput, where it becomes greyish white, bordered with buff 

 lateral fasciae ; the rest of tlie occiput greyish white : cheeks 

 somewhat brownish, with a pale longitudinal fascia along the 

 lower margin, which extends also across the lower margins 

 of the pronotal lobes and into the pleurae, gradually fading 

 backwards. Disc of the pronotum buff, with a not sh:irply- 

 detiued reddish-brown fascia along the median keel, which is 



