JJl/'Jroporu.-^.] aiiKpiiaoa: 177 



it occurs : it aiipoars to be cliiefiy fr)uiJtl in the Lontlon district (Weybridge, Eslier, 

 Keiijate, Cliobliain, (Jravisoiid, &c.), iiiid tlie New Forest; Devonshire; Anglesea 

 (Wollaston) ; Ireland, near Belfast and elsewhere. 



K. lepidus, 01. Oval, convex, puLcscent, elytra very strongly acu- 

 minate behind ; head and tliorax black ; elytra black with the margins and 

 two or three waved bands and markings on each testaceous, tliose towards 

 base being usually most conspicuous; the basal stria) of thorax are indis- 

 tinct ; in British specimens the colour is fairly constant, and the punc- 

 tuation distinct, although fine, but in Southern Europe it is much more 

 varialjle, and specimens occur which are yellow with the suture, a large, 

 transverse patch on middle, and a humeral dot black ; smooth forms 

 also occur in which the punctuation is obsolete, but these too are not 

 found further north ; the sexes are scarcely distinguishable. Long. 3, 

 lat. 1| mm. 



Ponds, either stagnant or with water rnniiin<^ through them ; somewhat local but 

 widely distributed throughout England and Wales ; Scotland, local. Lowlands, Tweed, 

 Forth, Dee, Clyde; Ireland, Helfast, Dulilin, &c. : I have taken the species in profu- 

 sion in a pond close to the coast at Bournemouth through which a strong stream was 

 running, and also in a quite stagnant pool in the middle of Langworth Wood, Lincoln. 



K. rivalis, Gyll, {fluviafilU, Steph.). Broad oval, rather round, 

 without pul)escence, rather dull, almost impunctate ; underside blackish, 

 S(jmetime3 ferruginous, upper side testaceous, disc of thorax more or less 

 dark, elytra with longitudinal black lines more or less abbreviated and 

 confluent ; striiB at base of thorax very plain ; front and middle tarsi of 

 male rather broader than in female ; antennae, except extreme apex, 

 testaceous. Long. 3, lat, 2 mm. 



Running water; local but widely distributed ; rare in tho London district, Gom- 

 shall, Merton (Surrey) ; Selborne ; R. Tavy, Devonshire ; Yorkshire ; Northumberland 

 and Durham district; Scotland, common in streams, Lowlands, Forth, Tay, Moray. 

 L'eland, Belfast, Loughlinstowii, Waterford, &c. 



The var. Sanmar/di diilers slightly in form, colour, and sculpture from 

 the type, but is hardly a variety, much less a species, as some authors 

 have coi.si lered it to be. 



H. septentrionalls, Oyll. This species rather closelj' resem])les 

 the preceding, iinni whicli it may be at once distinguished by its longer 

 and more oblong form, and longer elytra, the dark lines on which are as 

 a rule much more distinct and less confluent ; the basal striae of thorax 

 are usually al)l)reviateil both in front and Itehind, and the surface of the 

 elytra is plainly and diffusely punctured ; the dark markings on thorax, 

 also, are more distinct, and are separated in the centre by a longitudinal 

 testaceous band ; underside black, sometimes ferruginous ; the sexe.s 

 scarcely difler. Long. 3g, lat. 2 mm. 



Running water ; it is, as its name implies, n northern species, but has been taken ia 

 Bfwdley Forest, Worcestershire, by Mr, Blatch, and has occurred at Studley and 

 ScarhorouLrh, Yorkshii-e ; Dr. Leach's recoril from Devonshire reiiuires confirmation ; 

 Northumberland and Durham district ; Scotland, common in streams both Lowlands 



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