AyDRENID.E. 19 



shining, its jninctiiration very fine 



and remote iFFlNls. 



S. gibbus, lAnn. — Black, sbining, second, third, and 

 fourth segments of the abdomen more or less red in the $ , 

 first, second, and third in the ? . 



c? with the antenute very long and thick, third joint of 

 the flagellum many times longer than the transverse second 

 joint, pubescent bands at the base of the joints produced 

 along the sides towards the apex; mesonotum largely and 

 rugosely punctured, wiugs slightly dusky, second sub- 

 marginal cell not quite so wide at the base as long ; 

 abdomen rather strongly punctured, variable in the extent 

 of its black colour, armature with each lacinia produced 

 into two fringed pi-ocesses, the upper one very elongate, 

 narrow, and curved, the lower one short and concave. 



$ with the mesonotum very shining, very largely and 

 remotely punctured, propodeum rugosely strigose at the 

 sides ; wings darker than iu any of the other species, with 

 a distinct apical baud, second submarginal cell shaped 

 much as in the $; abdomen shiuiug, indistinctly punctured, 

 glabrous, centre of apical dorsal valve very narrow, hairs 

 and spines along the external margin of the posterior tibiae 

 black. 



L. 8-10 mm. 



Probably our commonest species, and generally distri- 

 buted. 



S. reticulatus, Thorns. — Like a rather small gihhus 

 but the punctuiation of the mesonotum less coarse. 



c? with the antennae less elongate and thinner than ia 

 gibbus, joints of the flagellum with the basal pubescent 

 bands much narrower, anterior wings with the second 

 submarginal cell very narrow, its sides subparallel, about 

 twice as long as wide ; abdomen shining, less strongly 

 punctured, armature with the lacinia elongate and rather 

 thick, with a membranous wing along the inner margin. 



5 differs from 'lilibiis in the narrow second submarginal 



