144 



apex, female with the last ventral segment very slightly sinuate on each 

 side at apex. 



On flowers, by sweeping grass, &c. ; local ; London district, not common, Chatham, 

 Leith Hill, Esher, Woking, Birdbrook, Aylsham, Tonbridge, Tilgate Forest ; 

 Hastings ; New Forest ; Glanvilles Wootton ; Devon ; Dean Forest ; Swansea ; 

 Cunnock Chase ; Trench Woods ; Robius Wood, Repton ; Knutsford, Cheshire ; 

 Lf\ liuni, Yorkshire ; Bowdon, Manchester ; not recorded from the Northumberland 

 and Durham district, but probably occurs; Scotland, local, Solway, Tay, Dee, and 

 Moray districts; Ireland, near Dublin, Armagh, Belfast, Larne, &c. 



R. limbata, Thorns, (tesiaceus, var., auct.). Very like the pre- 

 ceding, but easily known by having the femora more or less broadly 

 dark, and the whole of the margins of the thorax testaceous ; the colour, 

 howevnr, is variable to a certain extent, and would not be enough to 

 constitute the insect a separate species; Thomson, however, has 

 pointed out that the sexual characters are different, the male having 

 the seventh ventral segment depressed and subtruncate at apex, and 

 produced into a tooth on each side, and the female having the last 

 ventral segment slightly emarginate at apex. L. 3|-4 mm. 



By sweeping flowers, gross, &c. ; much commoner than the preceding, and gene- 

 rally distributed throughout the country ; it is extremely abundant in the Midlands. 



R. pallida, F. (pallipes, F.). A narrow, elongate, and graceful 

 species ; head, thorax, and under-side black, elytra of a light testaceous 

 colour ; head finely punctured, considerably different in shape in the 

 sexes, antennae long and slender ; thorax about as long as, or a little 

 longer than, broad, extremely finely punctured, narrowed in front, with 

 an obsolete central channel ; scutellum black ; elytra with long and 

 scanty pubescence, sculpture rugose and shallow; legs clear yellow. 

 L. 5-7 mm. 



Male with the head broador than in female, and the eyes very large 

 and prominent, and the third joint of the antennae longer in proportion 

 to the second; the antennae are much longer in the former sex than in 

 the latter. 



By sweeping and beating in woods ; common and widely distributed throughout 

 England and Wales and the greater part of Scotland ; Ireland, Armagh, Belfast, and 

 Dublin, and probably common. 



R. elong-ata, Fall, (pahtdosa, Kedt., nee Fall.). Elongate, entirely 

 black, with the base of the antennae and tibiae, arid, as a rule, the apex 

 of femora and more or less of the tarsi testaceous or obscurely tes- 

 taceous ; head varying in the sexes, antennae longer in male than in 

 female ; thorax subquadrate, slightly narrowed in front, with a more or 

 less obsolete depression or channel in middle of disc, posterior angles 

 well marked; elytra broader than thorax, with rather long and scanty 

 greyish pubescence, rather closely and rugosely punctured, with traces 

 of raised lines ; under-side black, with margins of segments often a little 

 lighter. L. 5-6 mm. 



