48 . [July, 1885. 



6 (5) Pubescence on head, thorax, and base of abdomen woolly, close, thick, griseous, 

 pale or yellowish ; wings not marked with fuscous ; head, thorax, and ab- 

 domen for the greater part yellow lutea. 



1. CiMBEX STLYAEFM, Fab. 



= betulce, Br. <fe Zad., = lutea, Thorns. 

 Black, antennae and tarsi luteous ; body covered with a black or fuscous longish 

 pubescence ; wings hyaline ; a fascia along the transverse basal nervure and the 

 outer margin, fuscous. Length, 7 — 13i lin. 



The abdomen may be red in the middle in both sexes (= var. 

 sylvarmn), entirely red in the J* ; the tibisB and tarsi luteous ; the 

 middle segments o£ abdomen pale testaceous (= varians, Lep.), and 

 the fore part of mesopleurae, the middle lobes of mesonotum laterally, 

 scutellum, legs and abdomen reddish-yellow, and the wings yellowish. 



Common and very variable. 



2. CiMBEX coNis^ATA, Schr. 

 = C. violascens, Thoms. 



Fuscous-violaceous, the head, pronotum, pleurae, tibiae, and tarsi brownish- 

 testaceous ; coxae and femora violaceous ; abdomen bright luteous, the two basal 

 segments entirely, the third broadly in the middle, apical segments laterally, and the 

 greater part of the ventral surface, violaceous ; antennae luteous ; head, thorax, and 

 base of abdomen covered with a griseous pubescence, which is darkest on the meta- 

 thorax ; wings hyaline, more or less spotted with fuscous at base. 



The J is violet-black, the apex of abdomen dull fuscous ; antennae and tarsi 

 luteous ; tibiae brownish ; head, pronotum, and pleurae dull brown. The wings are 

 coloured as in the $ , but have a much more clearly defined steel-bluish-violet 

 iridescence. Length, 10 — 12 lin. 



The distinctions between connata and lutea lie in the darker 

 coloured thorax and base of the abdomen in the former, these parts 

 being always, for the greater part, fuscous for the ground colour and 

 most distinctly violaceous, this being also the case wdth the cox^e, 

 trochanters and femora ; the wings are darker at the median cellule 

 and apex, while they have also a more distinctly marked violet irides- 

 cence ; the pubescence on thorax and abdomen is shorter and thinner, 

 the spurs are longer and thinner, and generally it is a larger insect 

 than lutea. 



E/are. 



3. CiMBEX LUTEA, L. 



= Ircvispina, Thorns., = saliceti, Br. & Zad. 

 Luteous ; head and thorax darker coloured than the abdomen and legs ; covered 

 with close silky white or yellowish pubescence ; wings pellucid, sometimes with a 

 yellowish tint. 



The S is covered with longer pubescence, and is fuscous or blackish in colour. 



Length, 7 — 15 lin. 



