Bembidiiim.] adephaga. 105 



more rounded, and the legs are paler, being of a bright reddi.sh-yello\v 

 colour. L. 3 mra. 



Mai'shy places, especially on heaths, at roots of prass, <fec.; local, but often 

 comniou where it occurs. Dartford, Maidstone, Wiinl)ledon, Esher, Weyhriilg-e, 

 Dareiith ; Tonbriilge ; Lancashii'e ; Qostbrth ; also found in the Midlands ; Scotland, 

 commoH Lowlands, and has been found as far north as Tain, Hoss-shire ; Ireland, near 

 Armagh. 



B. big-uttatum, F. Eluish black, occasionally -with a greenish or 

 purplish tinge ; larger, more shiny, and with the elytral spot plainer 

 than in B. guttula, -which it closely resembles : from larger specimens ol 

 the latter species it is difficult sometimes at first sight to distinguish 

 small specimens of B. bigidtatum ; as a rule, the latter insect may be at 

 once distinguished by its size, but it diff"ers further by having the sides 

 of the thorax more strongly rounded, the posterior angles less evident, 

 and the central portion of the base of thorax plainly produced, so that 

 there is a much more distinct emargination between the posterior angles 

 and the produced portion. L. 3-4 mm. 



Common and widely distributed throughout England ; Scotland, Lowlands, Tweed, 

 Forth, and Clyde; Ireland. 



S. riparium, 01. {hinulatum, Fourc). Yery like the preceding, 

 of which it may very probably be, as it has been considered by many 

 authors, merely a variety ; it diflfers, however, in being as a rule larger, 

 in its colour, which is bronze black with the legs and base of antenna 

 reddish brown instead of testaceous, and in the fact that the seventh 

 stria of the elytra is altogether wanting. L. 3^-4| mm. 



Not nearly as common as the preceding, but appt^ars to be widely distributed, and 

 to occur in coni]iany with it; occasionally, as iu Plumstead Marshes, it seems to ba 

 the commoner of the two. 



B. eeneum, (Icrra. This species also has been considered a variety 

 of B. bu/iitfatiim by Dejean and other authors, but whatever may be 

 said of the preceding species, there can be no question that this one is 

 distinct ; its obscure bronze coloiir and quite black antennte and le^s 

 will at once distinguish it from all the allied species ; the thorax is 

 shorter and more transverse than in B. higuttatum, and the posterior 

 angles more evident ; the elytra are narrower in front, the sides more 

 rounded, and the disc has more finely punctured strife, which are less 

 efFaced towards apex : the elytral spot is present, but is almost always 

 more or less obsolete, and in some cases is hardly visible. L. 3^ mm. 



On banks of rivers; also iu brackish muddy places on or near the co.ast, under 

 tidal refuse. Stones, &c. ; local, but widely distributed ; not always common where it 

 occurs, but sometimes abuiidaut : for instance, it is found in great ahundauce on the 

 banks of the William near Lincoln, but on the banks of the Trent at Repton I used 

 1o take it very sparingly. Scotland, local. Forth, Solway, Clyde. Ireland, near 

 IJi'lfast, local near Dublin, and near .Xrniagh, 



Group 111. (Campa, Mdtsdiulsky.) 



I. Klytra with variejrated yellow markiiii^s B. FCMIOATUM, Ditft, 



II. Elytra unicolorous, with the exception of a more or less 

 distinct subapical spot. 



