196 CLAVICOHNIA. [Cc'/-t/1<m. 



Under bark of all kinds of deciduous trees, especially beeches ; very local, but, oc- 

 casionally abundant; Clmthiim ; Cobham Park, Kent ; New Forest; Dean Forest; 

 Cannock Chase ; Sherwood Forest ; Witbington, Cheshire, in decayed root of lime 

 tree; Scotland, rare, Tay district, Aviemore. 



C. deplanatum, Gyll. Closely allied to the preceding, but rather 

 smaller and more depressed, being the flattest of all the European 

 species ; in the male.the thorax is evidently, although gradually, narrowed 

 towards base, in the female the sides are almost straight, in both sexes 

 it is longer than broad ; the basal impressions are very small, and often 

 only indicated by a very narrow fovea at base, which sometimes is almost 

 absent ; this point will distinguish it from the preceding, and also from 

 the continental species C. impressum, which it much resembles ; the 

 striae of the elytra are moderate and reach apex ; the sutural stria is, 

 however, not deeper at apex. L. If -2 mm. 



Very rare in Britain ; I only know of two or three examples, taken, I believe, by 

 Mr. Gorhain in the New Forest ; Dr. Sharp's specimens from Scotland, that stmul 

 under the name, appear to be only small varieties of C.ferrugineum ; the species is 

 found rarely iu Central Europe, under bark of beech, aspen, poplar, and probably 

 other deciduous trees. 



MTTRMIDIINA. 



In some respects this tribe appears to be related to the Histcridre, but 

 it differs in having the tarsi 4-jointed ; unless, therefore, we can raise the 

 tribe to the rank of a family, it seems the best course to class it with the 

 Colydiidae ; it must be admitted, however, that it appears to be a some- 

 what abnormal member of the family, and that as regards the develop- 

 ment of the prosternal lobe it much resembles Hister and its allies ; its 

 present position must, perhaps, be regarded as merely provisional. 



SXURXKXDXUS, Leach. 



This genus contains two species, which are found in Europe and 

 America ; one of these occurs very rarely in Britain. 



T/l. ovalis, Beck (ferrugineus, Leach). Short oval, rather convex, 

 shining, lighter or darker castaneous ; head narrower than thorax ; 

 antennae very short, ferruginous, with a subglobose, apparently one- 

 jointed, club; thorax very slightly narrower at base than elytra, very 

 transverse, obsoletely punctured, with two abbreviated striae on each 

 side, posterior angles right angles; elytra rounded at sides and apex, 

 with rows of rather large punctures, which become evanescent towards 

 apex ; legs ferruginous, tibiae somewhat arcuate. L. 1 mm. 



Iu dead leaves, cut grass &c. ; mostly found, however, in old rice, hay, <fcc. ; Mad- 

 ingley Wood, Cambridgeshire, Dec. 1831 (Power) ; Shirley, near Croydon (Champion) ; 

 London, in an old truss of hay bought for packing purposes (Jansou). 



