Douacia.] rnvTurHAOA. 277 



having the antennae comparatively short and stout, with the third joint 

 less elongate and only a little longer than the second, and especially 

 by the fact that the anterior angles of the thorax are rounded and 

 deflexed, and the lateral callosities are much less marked and are con- 

 founded anteriorly with the margin ; the antennae and legs are some- 

 times partially ferruginous. L. 6|-9 mm. 



On aquatic plants ; it was first recognized aa taken in Perthshire by Mr. 

 Foxcroft in May, 1854, but has since been fonnd in several localities in England ; it 

 appears to prefer rather high boggy districts ; local ; London district not uncommon, 

 Lfwisham, Wimbledon, \Vokin_r, E^her, Chobham ; Deal ; Sutton P. irk ; Canuock 

 Chase; Manchester district, rare; Northumberland and Durham district, not un- 

 common, especially in mossy holes on the moors ; Scotland, common in bogs on the 

 moors, Solway, Tay, Dee, Moray, and probably other district*. 



D. braccata, Scop, (m'gra, F.). A large and conspicuous species, 

 elongate, subparallel, rather convex, black, with a more or les-s distinct 

 purple reflection, thorax greenish, under-side thickly clothed with 

 greyish or golden-yellowish pubescence, antennae, legs, and last four 

 segments of abdomen red, scarcely pubescent ; head finely and thickly 

 punctured, with the central furrow long and deep, antennae long ; thorax 

 subcordate, strongly narrowed behind, impressed, at base, not strongly 

 punctured, with central furrow oiten obsolete, anterior angles small and 

 blunt ; elytra parallel-sided, separately rounded at apex, with rather 

 strong punctured striae, interstices coarsely rugose ; posterior femora 

 with a strong tooth in male, and a feeble or almost obsolete tooth in 

 female. L. ( J-11 mm. 



Male with the metasternum and first ventral segment of abdomen 

 broadly impressed and the fifth segment slightly emarginate at apex, 

 thorax sparingly punctured and smooth in the middle. 



Female with the fifth ventral segment subtruncate at apex, and the 

 disc of thorax rather closely punctured. 



On aquatic plants, Phragmites, &c., in June; local, and as a rule rare, but 

 occasionally found in abundance, especially near the coast; Batt>rsea (Stephens , 

 Greenwich, Woolwich, Gravenend, Southern), Whitstnble ; Bearsted ; Pegwell Bay; 

 Deal; Hasting*; Swuusea; Cambridge; Whittlesea Mere. 



D. affinis, Kunze. Oblong, subparallel, rather convex, upper side 

 metallic, especially in female, under-side silvery, except the last four 

 segments of the abdomen, which, together with the antennas and legs, are 

 red ; head closely punctured, with deep central furrow, antennae com- 

 paratively short ; thorax subquadrate, gradually and slightly narrowed 

 behind, rather finely punctured, with the anterior angles slightly pro- 

 minent and callose ; legs short. L. 5-8 mm. 



Male with the upper side black with a purple reflection, or violaceous, 

 the thorax sparingly punctured, the metasternum and first ventral 

 segment broadly impressed, and the last segment slightly emarginate, 

 tin- posterior femora thickened and armed with a strong sharp tooth, and 

 the dytia puiictatt-.-triato, with the interstices finely coriaceous. 



