370 HYMENOPTERA ACULEATA. 



this and the apex of the stipes the lacinia is produced in- 

 wardly into a transverse process ; legs clothed with black 

 or pale hairs, metatarsi of the $ with very short hairs. 



L. 15-20 mm. 



Generally distributed and not rare, though probably often 

 overlooked. The var. disfingueiidus is rare,but has occurred at 

 Mount E Jgecumbe, near Plymouth ; (Bignell) . Hampstead ; 

 Shirley ; Noi-wood ; Lowestoft; Yorkshire; (Smith). Nor- 

 folk ; (B ridyman) . Eugby ; (Morice). Gloucestershire ; 

 {Perkins). Lancashire ; [Gardner). Perth; (McGregor). 

 Dumfries; [Service). N. Uist. ; Isle of Man ; [Dale). 



Mr. Sladen says that the cocoons of this species are 

 often blotched with masses of wax, and the nests have 

 a characteristic disagreeable odour. 



B. sylvarum, Linn. — Head and thorax clothed with 

 greyish hairs, more or less intermixed with black, especi- 

 ally on the vertex and across the mesonotum, where the 

 black hairs form a distinct band, those of the sides of the 

 thorax and of the propodeum entirely pale. Fifth joint of 

 the antennse in the ^ as long as the two preceding together, 

 cheeks in both sexes about as long as their apical width ; 

 abdomen in both sexes clothed with greyish hairs, those at 

 the base of the second segment tinged with orange, and 

 those at its sides black, third segment clothed with black 

 hairs, but with a grey apical band, remaining segments 

 clothed with orange coloured hairs, each with an apical band 

 of grey, beneath and legs clothed with grey hairs, the 

 anterior and intermediate tibia3 with black, intermediate 

 metatarsi in the ? and $ produced at the outer apex into 

 a distinct spine, armature of the S with the sagittse hamate 

 at the apex, the lacinia terminating in a sharp point, and 

 produced below it on its inner margin into a short truncate 

 process, on a lower level to which is a second rounded hairy 

 process ; nearer the base than these, just at its union with 

 the stipes, is emitted a long sharp spine-like process ; the 

 inferior margin of the lacinia is densely fringed with hairs. 



