324 STAPHYLiNiDj;. \_EvcestJietince. 



EV^STHETIN^. 



This group is usually classed with the Steninoe, but is very clistiRCt hy 

 reason of the posterior coxae being contiguous, and the different mode of 

 the insertion of the antennae, as well as by the structure of the trophi ; 

 in some points it is allied with the broader forms of Sanias, and in others 

 it bears a relation to Trogophloeus ; if placed anywhere it must come 

 under the Paederinae, but from this group it is distinguished by the 

 totally different structure of the front coxte, and by haviug the antennae 

 inserted inside the base of the mandibles and terminated by an evident 

 club, whereas in the Paederinae the antennae are inserted outside the base 

 of the mandibles and are not clubbed ; in the latter group, moreover, 

 the tarsi are always five-jointed, whereas in the Eoce.sthetincB they are 

 composed of either three or four joints ; the latter character alone is not 

 perhaps sufficient to warrant their separation, but it may be taken into 

 consideration to a certain extent ; the group contains five European 

 genera, Lej}toty2Mus, Mayetia, Octavius, EiJaphus, and Eixbsthetus, of 

 which the last only occurs in Britain, 



EVHISTHBTUS, Gravenhorst. 

 This genus comprises about six or seven species, which are found in 

 Europe, Central Asia, and North America ; one has lately been described 

 from Japan ; they are very small and rather robust insects, and very 

 inconspicuous, and so closely resemble one another that several of the 

 described species have been sunk as synonymous with others ; they live 

 imder stones and in moss in damp places, and often occur in numbers in 

 vegetable refuse at the sides of ponds, &c. ; they are very slow in their 

 movements ; we possess all the European species, if we go by the cata- 

 logue of Heyden, Reitter, and Weise, in which E. hipuncfatus and one or 

 two others are sunk as synonyms ; the species of the genus have all the 

 tarsi four-jointed. 



I. Head, thorax, and elytra rugosely punctured, dull ; 



sutural stria not or scarcely marked E. SCABEE, Grav. 



II. Thorax and elytra not rugosely punctured, rather 



sinning ; sutural stria plainly majrked. 

 i. Elytra evidently more finely punctured than thorax; 



thorax more closely punctured, with basal furrows 



longer and deeper E. RUFICAPIILUS, Lac. 



ii. Elytra scarcely more finely punctured than thorax ; 



thorax less closely punctured, with basal furrows 



shorter and shallower E. L^VIUSCULUS, Mannh. 



E. scaber, Thoms. Oblong, parallel-sided, broad in proportion to 

 its length, reddish-black, with the head usually lighter, dull, hind body 

 rather more shining ; head transverse, somewhat triangular, as broad as 

 thorax, together with thorax and elytra rather strongly, thickly, and 

 rugosely punctured ; antennae hardly longer than the head, with a three- 

 jointed club, red, with the club darker ; thorax rather transverse, and some- 

 what cordiform, broad in front, and strongly narrowed behind, with two 



