Hydrotlio8sa.~\ FIIYTOPILAGA. 319 



Male with the tibiae dilated towards apex, the anterior slightly, and 

 the posterior very slightly, curved, and the tarsi moderately dilated. 

 Female with a longitudinal raised fold at shoulders of elytra. 



Banks of riven and marshy placed, at roots of plants and grass, in flood refuse, Ac. j 

 often found in abundance in spring in Ranunculacea ; common and generally distri- 

 buted throughout the greater part of England, but somewhat local in some districts ; 

 Scotland, Solway and probably several other districts ; Ireland, Dublin, Armagh, 

 Belfast, and most likely general. 



In l:oth this and the preceding species varieties occur rarely in which 

 the reddish-yellow colour of the side margins is very obscure, sometimes 

 almost pitchy, or slightly aeneous. 



H. hannoverana, F. Ovate, or obovate, rather convex, shining, 

 of a bluish or greenish black or nigro-aeneous colour, with the margins 

 of thorax and elytra broadly yellowish -red, and a broad longitudinal 

 band of the same colour on the disc of each elytron, which extends from 

 base to apex, and is curved outwards a little before base ; head finely 

 punctured, antennae black, with the seventh joint slightly produced in a 

 triangular lobe on its upper surface ; thorax transverse, narrowed in 

 front, very diffusely punctured, more finely on disc than at sides ; 

 elytra with strong punctured striae, interstices slightly convex and almost 

 smooth; the elytral bands are somewhat variable, being occasionally 

 interrupted ; legs black. L. 4-4| mm. 



Male with the tibiae dilated towards apex, and the anterior pair slightly 

 curved ; tarsi moderately dilated. 



Female with the filth and seventh interstices raised and subcostate ut 

 bwe. 



In damp meadows on Cahha palustris and other Rnnunculurea? in spring ; rare ; 

 Askhiim Bryan, near York (Preston) ; Fulford, near York (Hey); Hampshire (Mon- 

 creHff) ; I do not know of its occurrence in any other locality in Britain ; \Veise says 

 that it is common in the northern half of Germany, but sparingly distributed in the 

 southern half, and Thomson records it as rather rare in Norway and Sweden. 



PRASOCUB.IS, Latreille. (Helodes, Paykull.) 



The members of this genus may be easily distinguished by their elongate 

 and narrow form and quadrate or oblong thorax, which is margined at 

 base ; the under-side is sparingly pilose ; the elytra are furnished with 

 nine punctured striae, and the prosternum is broad between the coxae, 

 and has tho process not margined ; of the five European species two are 

 found in Britain: 



I. t'pper surface unicolorons blue P. JUNCI, Br,i/n. 



(beccabtmga, II'.) 



II. Upper surface black-bronze, with the sides of thoirx, and 

 elytra, and a longitudinal band on each of the latter, 

 yellow P. PHKLi ANDRII, /.. 



P. junci, Brahm. (beccabunyee, 111.). Elongate, oblong, ratlu-r 



