SPIIEGID.-E. 105 



are petiolated; abdomen not petiolated and not deeply 

 constricted between tlie segments ; its puuctnration not 

 large and coarse, ? witli a distinct pecten on tbe anterior 

 tarsi, the pulvilli large and inflated. The British species, 

 with the exception of tumidus, which has a red and black 

 abdomen, are black -with yellow bauds. Handlirsch 

 describes 121 species of this genus, which aj^pears to occur 

 in all the regions of the globe; there are about forty 

 Palcearctic species, of which six occur in Britain. 



(i2) 1. Abdomen reel at the base. (S>xx\>g. Arpacius, 



Panz.) TUMIDUS. 



(1) 2. Abdomen not red at tlie base. 

 (6) 3. Second segment of abdomen much pro- 

 duced ventrally and angnlated at the 



base. Cnbital nervure of anterior wings 



not nearly reaching to the apex. 



(Siibg. Goiytes, Latr.). 

 Second segment ventrally very largely 



punctured at the base .... mtstaceus. 

 Second segment ventrally not largely 



punctured at the base .... campesteis. 

 Second segment of abdomen not angulated 



at the base ventrally, cubital nervure of 



anterior wing extending to the apex. 



(Subg. Ilopnsus, Lep.). 

 Basal segment of abdomen not constricted 



at the apex, its sides nearly straight. 

 Band of the second abdominal segment 



not wider than that of the first . . 4-fasciaTUS. 

 Band of the second abdominal segment 



much wider than that of the first . . laticinctus. 

 Basal segment of abdomen constricted at 



the apex, its sides much rounded . . bicikctus. 



(Subg. AEPACTUS.) 

 G. tumidus, Fam. {Arpactus tumidus, Auct.) — Black, 

 shining, first and second abdominal segments red ; sides of 

 the face, scape of the antennte in front, clypeus, mandibles, 

 centre of the scutellum, a spot on each side of the second 

 abdominal segment near the apex, and a transverse spot or 

 line across the fifth, milky white; these spots are all liable 

 to variation, and one or more are often absent ; antenna) 

 in the S and legs in both sexes testaceous, posterior 



