378 CLAVICORNIA. [Elmis. 



broad, with very strongly punctured striae, and with the second and fourth 

 interstices slightly raised, the sixth being carinate ; under-side black or 

 reddish-brown; legs pitchy-brown with tarsi lighter. L. lg 1J mm. 



In running streams ; rare in England as far north as Northumberland, and in W;iles ; 

 Ripley, Surrey (Champion); Woking; Hnngay, Suffolk (VV. Carney s) ; Drayton ; 

 Scarborough; Manchester district; Hartlepool ; Northumberland district, local, 

 Tyne, Irtliing, Ouseburn, and Wausbeck ; Scotland, local, Solway and Forth and 

 probably Tweed and Clyde districts. 



E. nitens, Miill. (orichalwus, Gyll. ; Riolus nitens, Mulsant). Very 

 like the preceding, and easily confounded witii it; it is, however, 

 slightly larger, and has the antennae always of a unicolorous red colour, 

 and the thorax very finely and rugosely punctured and dull, with the 

 disc almost even ; the second and fourth interstices are quite even, and the 

 sixth is finely carinate ; this is, however, not a very distinct character, as 

 the second and fourth interstices in E. cupreus are very slightly and often 

 almost imperceptibly raised ; the general shape of the elytra in E. nitens 

 appears to be rather larger, less oval, and more depressed on disc than 

 VD.E. cupreus. L. l|-lf mm. 



In running streams ; rare as a rule, but it has occurred rather plentifully to 

 Dr. Power in the Wansbeck, Northumberland, where it has also been taken iu the 

 Tyne, near Close House, &c. ; Stephens mentions it from near London, and it has 

 also been recorded from Drayton, Hampshire, Glanvilles Wootton, Kxmouth, Bewdley, 

 and Lancaster (River Luue) ; Scotland, very rare, Forth district, taken by Mr.His'.op 

 near Falkirk. 



XiZMNZUS, Muller. 



According to the Munich catalogue only half-a-dozen species belong to 

 this genus, of which three are found in Europe, two in North America, 

 and one in Australia ; several, however, have since been described by Sharp 

 and Fairmaire, and there are now nine species in the European list alone, 

 so that it is probable the numbers of the genus will be largely increased ; 

 the species differ from Elmis in having the scutellum large and somewhat 

 rounded, and in the fact that the thorax is incised before scutellum ; 

 hitherto there has been some confusion as to our species, but Dr. Sharp 

 has lately determined the specimens taken by Dr. Power at Woking to 

 be L. rivularis, Rosenh. 



I. Strise of elytra rather strongly punctured ; central 

 interstices of elytra more strongly rugose. 



i. Size larger ; thorax duller ; general form broader. L. TUBBBCPLATUS, Miill. 

 ii. Size smaller; thorax more .shiny ; general form 



narrower L. BiVULABis, Sosenh. 



II. Strise of elytra finely punctured ; central interstices of 

 elytra more finely and closely rugose L. TBOGLODYTES, Gyll. 



It. tuberculatus, Mull. (Dargelasi, Latr.). Oblong-ovate, convex, 

 brassy black or brownish-bronze, elytra often lighter ; head thickly and 

 finely pubescent, antennae red ; thorax almost as broad as elytra, rather 



