254 HYMENOPTERA ACULEATA. 



A. bucephala Sfeph. (longipes, Sv)ifh). — Allied to the 

 preceding in the euormous head of the ^. Black, head 

 and thorax dull, irregularly punctured, clothed with fulvous 

 hairs, paler on the clypeus and the sides of the thorax, 

 cheeks slightly angulated both above and below the base 

 of the mandibles, which are simple, antenna unusually long 

 in both sexes, pale beneath in the ? , third joint in the cj 

 considerably longer than the fourth, in the ? slightly longer 

 than the fourth and fifth together; Tnesonotum finely punc- 

 tured in the ? , wiug-i slightly dusky, nervures and tegulsB 

 pale testaceous, propodeum finely rugose, its basal area 

 very narrow in the ^J ; abdomen shining and remotely punc- 

 tured ill the (J, dull and finely rugulose, and very shallowly 

 punctured in the ? ; elongate elliptic and with the apical 

 margins of the segments testaceous in both sexes, very 

 much narrowed towards the base and apex in the rT; in the 

 ? with the apices of the segments very narrowly fringed 

 with white hairs, apical fimbria golden brown ; segments 

 beneath fringed with pale hairs, apical ventral segment in 

 the cJ enlarged at the apex, and deeply emarginate ; legs 

 black, clothed with pale hairs, the extreme apices of the 

 tibiae and all the tarsi pale in the c?, the posterior tibiiB, and 

 all the tarsi piceous and translucent in the ? ; tibiaj and 

 tarsi narrower than in most of the species, which makes 

 them look unusually long. 



L. 9-12 mm. 



Rare. Hampstead ; Bristol ; Chobham Common ; {Smith). 

 Birmingham; {Mars/tall). Fordlands, near Exeter ; {Ptir- 

 fitt). Boxhill, at flowers of Prunus ; {BUlnps). 



A. Hattorfiana, Fab. {Lathamana, Kirhij, hcemorrhoi- 

 dalls, Klrlnj). — The largest British species of the genus, 

 black, shining, head and thorax punctured, sparingly 

 clothed with pale hairs, which are brownish in the ^ , 

 clypeus in the S white, with its apical margin and two 

 small discal spots black ; wings smoky, propodeum finely 

 rugose ; abdomen finely punctured, shining, the apical 



