3o8 HYMENOPTERA ACULEATA. 



wings with a brownish tinge, propodeum finely rugose at 

 the base ; abdomen closely and largely punctured; sixth 

 segment at the apex carinated down the middle, the carina 

 less marked in the ? , $ with the seventh segment inflected, 

 hidden from above, its apex bidentate ; ventral segments 

 one to five visible in the c?, the apex only of the sixth 

 apparent, this is produced and sharply bidentate in the 

 centre, its disc with a deep shining fovea, in the ? the ventral 

 segments are simple, and clothed with a few long hairs ; 

 legs pitchy black, clothed with silvery hairs, the extreme 

 base of the tibiae in the $ with a white spot. 

 L. 6-7 mm. 



Folkestone ; (Lewis). Charlton, Birch and Darenth 

 Woods, Kent ; Weybridge ; South Devon ; Budleigh 

 Salterton; (Smith). Croydon; {Itotlmey). Colchester; 

 (Earwood). Bristol; (Dn?e). Bevfdlej ; {Marshall). Ni- 

 dificates in bramble stems. 



CHELOSTOMA, Latr. 



Elongate, subparallel-sided, labial palpi four-jointed, the 

 second exceedingly long, the fourth deflected and cylindri- 

 cal, paraglossfB blunt, sheath-like, maxillary palpi three- 

 jointed, labrum elongate, subparallel-sided ; wings with two 

 submarginal cells ; abdomen with the first segment without 

 a transverse basal carina, five ventral segments exposed in 

 the (J, the second tuberculated or carinated, fifth with an 

 apical fringe of long curved hairs, stipites of (J armature 

 without any definite lacinia, ? with a dense ventral pollen 

 brush composed of hairs with very fine filamentary 

 branches. 



The habits of this genus are interesting. The (^ usually 

 spends its nights curled up in flowers, but Smith says 

 that at other times he has observed them hanging to blades 

 of grass by their mandibles, " suspending themselves in a 

 horizontal position with their hind legs stretched out in a 



