336 [July, 1889. 



On flowers ; local, and not uncommon in some districts ; London 

 district, rather common, Darenth Wood, Mickleham, Penge, Ripley, 

 Forest Hill, Dulwicb, Chingford, West Wickham, Chatham, Sheer- 

 ness, &c. ; Dover ; Hastings ; Portsea ; New Forest ; GHanvilles 

 Wootton ; Bristol ; Swansea ; Hertford ; Cambridge ; Norfolk ; Suf- 

 folk ; Midland districts, generally distributed ; Lincoln ; Whitby ; 

 Manchester ; Northumberland and Durham district, rare, but widely 

 distributed; Scotland, not common, Solway, Tweed, Forth, and probably 

 other districts. 



A. RUFICOLLIS, F. 



Black, thickly clothed with silky, greyish pubescence, with the mouth parts, 

 base of antennae, thorax, and the greater part of the legs reddish-testaceous ; the 

 tarsi, apex of tibia?, and sometimes part of femora, are infuscate ; thorax broader 

 than long, very finely strigose transversely ; elytra subparallel, bluntly rounded at 

 apex, rather more strongly strigose than thorax ; the antenna? are longer in the male 

 than in the female, and in both sexes are comparatively long ; in the latter the 

 penultimate joints are as long as broad, and in the former they are evidently longer 

 than broad ; the head is said to be occasionally rufous, but I have not observed this 

 in any British specimen. Length, 2J — 3| mm. 



Male with the third ventral segment of the abdomen strongly and broadly 

 produced and narrowly emarginate at apex, with the appendages reaching the fifth 

 segment and curved internally, fourth segment with two smaller appendages ; an- 

 terior tarsi scarcely dilated. 



On flowers of whitethorn ; common and generally distributed 

 throughout England and Wales, but probably less common towards 

 the north, as it appears to be only occasional in Scotland, where it 

 has hitherto occurred solely in the Solway and Forth districts ; Ireland, 

 Dublin, Armagh, Belfast, and probably general. 



A. flava, L., v. thoracica, L. (Jlava, Thorns., s. g. Nasipa, Emery). 



Elongate, yellow or yellow-testaceous, with the apical portion of the antennse, 

 and the breast and abdomen, blackish or pitchy-black ; elytra variable (in our British 

 specimens pitchy-black or pitchy yellow-brown) ; in the type form they are yellow, 

 or yellow with the apex broadly or narrowly fuscous ; the legs also are valuable in 

 colour, being usually entirely yellow, but sometimes more or less fuscous, espeoially 

 the posterior pair ; the antenna? are short, thickened towards apex, and with the 

 penultimate joints distinctly moniliform ; the thorax is nearly as long as broad, very 

 finely sculptured, with the posterior angles slightly obtuse ; the elytra are very finely, 

 but distinctly, strigose transversely ; the upper surface is clothed with rather strong 

 silky pubescence. Length, 2j — 3£ mm. 



Male with the abdomen without appendages, the fifth segment cleft, and the 

 anterior tarsi dilated. 



