APID.E. 311 



of the abdomen transversely carinated, f^with only two ven- 

 tral segments more or less fully exposed, fifth qiiadrately 

 produced on each sideapically, the processes with a row of 

 short spines along the apical margin, genital armature with 

 the stipites long and slender, curved and convergent at the 

 apex. Only one species is recorded from this country, 

 and this has not occurred for very many years. 



H. truncorum, Linn. — Black, head and thorax very 

 largely and rugosely punctured, clothed sparingly with 

 brownish hairs, face rather densely with pale hairs, man- 

 dibles broad at the apex and bidentate, apical joint of the 

 antennae slightly flattened, wings rather clouded, scutellum 

 dentate laterally, propodeum very short dorsally, crenulate 

 at the apex, its apical truncature shining ; abdomen with 

 the first segment truncate at the base, with a sharp curved 

 carina separating the truncature from the dorsal surface, 

 truncature shining, dorsal surface of the abdomen very 

 largely and deeply punctured and dull, first and second 

 segments in the c? and all the segments in the ? with an 

 apical Une of white hairs, seventh segment in the $ inferior, 

 second ventral segment densely hairy, third and fourth 

 slightly emarginate, fifth denticulate or spinose at the 

 sides, the centre submembranous apically, sixth pointed, 

 seventh nearly entirely membranous, eighth hairy, long and 

 tongue-like ; ? with the scopa dense and reddish yellow ; 

 legs clothed with silvery hairs. 



L. 6-7 mm. 



Brentford; [Kirby). Dulwich ; (Ingall). This latter 

 locality, however, seems to me to be doubtful, as although 

 F. Smith gives it in the second edition (1870) of his Cat. 

 Brit. Hym., &c., in the first (1855), he says, " Three or four 

 specimens were detected in Mr. Ingall's collection of his 

 own capturing, but he does not remember the precise 

 locality." 



