154 ADETOAGA. [IlaUplu^- 



ceeding are at once distmgiiished from H. vmcronatvs by having the 

 sides of the thorax strongly contracted in front and the elytra nuich 

 less parallel-sided, and also by the much smaller and narrower head ; 

 from the other species with strongly punctured elytra these may be 

 separated by their superior size. H. ftavicollis is of a lighter colour than 

 either H. mucronaius ov fulvus, and may be separated from the latter by 

 its broader shoulders, and light testaceous unspotted elytra ; the thorax 

 also is less produced in the centre of its anterior margin and the thoracic 

 punctures are blacker, but these distinctions are not very obvious. L. 

 4 mm. 



Pouds and ditches ; somewhat local, but widely distributed throughout England 

 and Wales; not uncommon in the Northumberland district, but very local in Scothmd, 

 and apparently only found in the Solway district, where it is recorded as abundant 

 in some pools by the side of the Nith below Thornhill. Ireland, near Belfast. 



K. fulvus, F. (fermginet/s, Gyll.). Ycry like the preceding, but of 

 a dark ferruginous colour, with darker spots on the elytra (which are 

 very rarely absent) ; the shoulders are narrower than in H. flavicollis, 

 which species hardly ever presents traces of spots on the elytra ; the 

 thorax has the anterior margin slightly produced in the middle. L. 

 4 mm. 



Ponds and ditches ; common and widely distributed throughout England and Wales, 

 although rather local in some districts; Scotland, not common, Lowlands, but some- 

 wliat widely distributed as far north as the Moray district. Ireland, near Belfast and 

 Dublin, and probably common. 



XZ. varieg'atus, Sturm. Ferruginous, ovate ; thorax with anterior 

 margin more or less dark, somewhat strongly contracted in front, 

 strongly punctured in front and behind, with a distinct row of large 

 punctures at base ; elytra convex, with base scarcely broader than base 

 of thorax, sides of thorax and elytra viewed sideways forming a very 

 open obtuse angle ; the dark markings on the elytra are, as a rule, much 

 more marked and more widely spread than in the other species, and 

 the rows of large punctures are very strong, the interstices being fur- 

 nished with rows of rather large punctures set at some distance apart. 

 L. 3^^ mm. 



Ditches, &c., both near the coast and inland ; local ; Wandsworth ; Notting Hill ; 

 Deal; Hastings; Sheerness; Strood and Kainham ; River Coin; Wicken and Burwcll 

 Fens and other localities in the fen districts of Cambridge, Huntingdon, and Norfolk ; 

 New Forest ; Hornsea ; Northumberland district, very rare ; very doubtful as 

 Scottish, there being only one record, " Dollar, J. T. Syme," Murray's Cat. ; Ireland, 

 one specimen, which I received from Mr. C. Donovan, taken near Cork; I can find 

 no other record of the species as Irish, but it wdl probably be found in other 

 places. 



K. cinereus, Aube {affinis, W. C). This species is in general 

 appearance intermediate between H. JiaHcollu and H. ruficollis : from 

 the former it ditFers through its smaller size and more irregular punctua- 

 tion of thorax, and also by the cloudy markings on the elytra, whicli, 

 however, are sometimes absent in light specimens ; the punctures also 



