196 Mr. E. Saunders' Synopsis of 



(8) 7. Larger ; ^ genitalia with the sagittse very narrow, 

 and fringed with short hairs ; the squama mem- 

 branous and somewhat quadrate, with a thickened 

 semi-lunate central region ; J with the apical 

 dorsal valve wide, slightly reflexed, and shining 

 at the edges piUfrons. 



(7) R. Smaller ; ^ genitalia with the sagittfe much 

 widened at the base ; the squama produced into 

 two processes, of which the lower one is rather 

 the longer ; J apical dorsal valve narrower, dull, 

 and with an impression running parallel to its 

 edge round its apex . . . . . . . . mmilh. 



{{')) 9. Surface of genitalia in ^ finely rugose, not longi- 

 tudinally striate ; 2nd submarginal cell in both 

 sexes, on its lower margin, as wide as long, nar- 

 rowed above . . . . . . . . . . puncticeps. 



(5) 10. Punctures of thorax fine and distant ; genitalia of 

 ^ with the stipites widely grooved ; J with the 

 3rd segment of the abdomen generally with a 

 small spot or fovea on each side near the base ; 

 apical dorsal valve narrow .. .. .. ephippium. 



1. Sphecodes gihhus, Linn. 



Linn., Syst. Nat., ed. x., vol. i., p. 571 ; Smith, Cat. 

 Brit. Hym., 2nd ed., p. 17. 



Black, shining ; thorax largely and remotely punc- 

 tured ; abdomen red, with the base and apex black ; 

 wings brown, 2nd submarginal cell narrow. 



(? . Head dull, rugosely punctured ; face in front of 

 the antennae clothed with silvery white hairs. Antennae 

 with the 2nd and 3rd joints transverse and subequal in 

 length ; the 4th very much longer, more than twice as 

 long as the other two together ; joints of the flagellum, 

 especially near its apex, with a narrow band of pale 

 fine hairs ; vertex very slightly produced behind the 

 eyes, clothed with greyish hairs ; mesothorax sparingly 

 clothed with very short greyish hairs, shining, and very 

 largely punctured ; post-scutellum and metathorax ru- 

 gose, the basal area of the latter longitudinally rugose. 

 Abdomen elongate, shining, remotely punctured, tes- 

 taceous-red ; the 1st segment, except at the apex, occa- 

 sionally a band on the 2nd and 3rd, and the whole of 

 the 4th and following segments, black ; beneath shining, 

 finely punctured; for genitalia see pi. viii., fig. 3; legs 

 black ; extreme apex of the tarsi piceous. 



? . Wider than the <? ; antennae short ; face clothed 

 with grey hairs ; mesothorax more shining than in the <? , 

 very largely and remotely punctured. Abdomen ovate, 



