272 PHYTOPHAGA. [Dtmacia. 



thickly pubescent, and the under-side is densely clothed with bright 

 golden pubescence ; head thickly sculptured with a short and deep 

 central furrow, antennae with the basal joints pubescent ; thorax a little 

 longer than broad, strongly punctured on disc, and rugose at sides, with 

 distinct central furrow ; elytra with shoulders strongly marked, much 

 narrowed from posterior third, truncate at apex, with a strong impression 

 just before middle near suture, and moderately strong rows of punc- 

 tures which are confused at base and finer at apex, interstices finely 

 rugose ; posterior femora long, reaching apex of elytra. L. 6-8 mm. 



Male with the last ventral segment of abdomen truncate and broadly 

 impressed before apex, posterior femora with one sharp tooth. 



Female with the last ventral segment of abdomen rounded at apex 

 and even, posterior femora with a smaller tooth. 



On aquatic plants ; local ; London district, rare, Battersea (Stephens) ; Ayleham 

 (T. Wood); Hastings; Eastbourne; Arundel ; Salisbury; Devon; Ciimbridge j Red- 

 grave Feu; Potter Heigham, Norfolk ; Bewdley; Repton; Scarborough ; Hale Moss, 

 and near B^wdon, Manchester district ; Mabberley, Cheshire ; Northumberland 

 district, Meldon Park ; Scotland, scarce, Solway, Tweed, Clyde, and Forth districts ; 

 Ireland, Armagh. 



D. limbata, Panz. (lemnce, F.). Rather depressed, female broader and 

 more parallel-sided than male, aeneous, often greenish, each elytron with 

 a reddish or purple band reaching along the margin, and a patch at base 

 near suture ; this patch is sometimes absent, and occasionally the elytra 

 are'unicolorous ; the under-side is thickly clothed with ashy silvery pubes- 

 cence ; head closely sculptured with a well-marked central furrow, antennae 

 black with the first five joints metallic; thorax quadrate, feebly narrowed 

 behind, with the anterior callosity obsolete, coarsely punctured on disc 

 and more or less strigose ; elytra distinctly impressed, with comparatively 

 fine rows of punctures, which become almost obsolete at apex, interstices 

 finely strigose, apex truncate legs unicolorous, metallic. L. 8-11 mm. 



Male with the elytra more pointed at apex, the last ventral segment 

 of the abdomen truncate and impressed at apex, and the posterior 

 femora armed with a small blunt tooth. 



Female with the elytra broader and less pointed at apex, the fifth 

 segment of the abdomen somewhat produced at apex, and the posterior 

 femora armed with a smaller tooth, which is sometimes almost obsolete. 



On aquatic plants ; local, but not uncommon in many districts ; Lee, Aylsham, 

 Belvedere, Maidstoue ; Bircliington ; Pegwell Bay ; Deal ; Hustings ; New Forest ; 

 Smuhsea; Glauvilles Wootton ; Devon; Gloucester; Swansea; Bewdley; Cannock 

 Chase; Repton; Ely; Cambridge Fens; Askham Bog, York ; Bowdon, near .Man- 

 chester; Manchester district, general on Sparganium (Chappell) ; not recorded from 

 the Northumberland district ; it is said to have been taken in the Forth district of 

 Scotland, but Dr. Slurp says that he bus not seen an individual t'ikeu in this 

 country. Ireland, near Dublin, and Armagh. 



D. bicolora, Zsch. (sagittarice, F.; aquatica, Schrank.). Allied 

 to the preceding, from which it may be distinguished by its colour, 



