372 HYMENOPTERA ACULEATA. 



form of the face shows that they belong to this species ; 

 tibife with red hairs. 



L. 12-18 mm. 



Common and generally distributed. 



The ? closely resembles that of lajndarius in colour, but 

 its short abdomen and red-haired tibiaa will easily distin- 

 guish it. 



B. pomorum, Panz. — Head clothed with black hairs, 

 face very long, the cheeks much longer than their apical 

 width, third joint of the antennae in the ^ about once and 

 a half as long as the fourth, fourth about half as long as the 

 fifth ; thorax clothed with black hairs, which anteriorly 

 and posteriorly are subject to be replaced by pale ones ; in 

 some of the Continental varieties there is only a band of 

 black hairs between the wings, those of the rest of the 

 thorax being pale grey ; in typical pomorum, which is the 

 only form that has occurred in Britain, the hairs of thorax 

 in the cJ are grey with a black interalar band, and those 

 in the $ are black ; abdomen in the <? clothed with grey 

 hairs on the basal segment, and with red on the rest, the 

 apical fringes being slightly paler, in the ? and 5 the 

 hairs are black on the first segment and then gradually 

 shade off into red, the whole of the apical segments being 

 clothed with hairs of the latter colour, but in some Conti- 

 nental varieties the abdominal hairs are grey, underside 

 clothed with red or pale hairs ; armature of the (J with the 

 sagittis dentate in the centre of their inferior margin, 

 curved downwards at the apex, which is dilated, obliquely 

 truncate, and hamate beneath, lacinia elongate, bent almost 

 at right angles at the apex, which bears a small slightly 

 reflexed tooth, at the base of the lacinia is a transverse 

 lamina, and between this and the apical process an obliquely 

 projecting tooth; legs clothed with black hairs, intermixed 

 with reddish or grey ones. 

 L. 12-18 mm. 

 Exceedingly rare in this country, where the c? and ? 



