BISOHISTUS -- STSTCECHUS. 275 



shanks; feet piceous; wings colourless, dark brown at the has 



"s ve S n g obL S u f ^ I" 6 b rderS J the b rder of this brown 

 ^ery oblique, and it slants towards the hinder base of the 

 wng; its outskirts are confined to the sides of the croL-veins 

 Ming-ribs and veins piceous ; poisers tawny 



y S0f the ""' 



Genus SYSTffiCHUS, Lw. 

 Systaec/tus, Loew, Neue Beitr. iii, p. 34 (1855) 



(Europe); byCoquil - 



This genus differs from Bomlylius chiefly by the two basal cells 

 being practically equal in length, owing to the position of the 

 anterior cross-vein near the base of the discal cell Eyes in rf 

 sometimes separated by a narrow frons. Tip of 3rd antennal 

 joint without the small obvious style present in Bombulius 



^S^JKw** " Sald ^ ^ 10ngei< and m re ragged tha " 



Range. AVorld-wide. 



Fig. 16. Systcechus, Lw., win". 



Life-history. The early stages of S. autumnalis and S. oreas, a 

 European and North American species respectively, have been 

 observed by Portchinsky and by Eiley. The larva? live in the 

 <?gg-cases of locusts ; they are whitish, cylindrical, ampbipneustk-, 

 and 13-segmented, much as in Bomlylius. The pupa? also 

 resemble those of that genus. 



TaUe of Species. 



1 . Legs with at least femora black ; abdomi- 



nal spines black 2. 



Legs wholly or principally yellow 3. 



2. Pubescence pale to bright yellow socius, Walk., p. 276. 



Pubescence nearly white nioalis, Brim., p. 277. 



v>. First and 2nd antennal joints brownish 

 yellow; femora and tibia? wholly bright 

 brownish yellow; abdominal spines [p. 277. 



yellow JlavosptROtut) sp. n., 



Antenna? all black; femora brownish. . . . eupogonatus, Big., p. 278. 



* This is so in many species ; 1 cannot vouch personally for the constancy 

 of the character. 



