Trichoni/x.] clavicornia. 99 



widest before middle, scarcely visibly pmrcturcd, with tlircc fovea? at base 

 united by a transverse furrow, elytra much wider at apex than at base, 

 with rather strong reflexed margins, finely and thickly punctured, 

 shoulders prominent, with a deep dorsal stria hardly reaching middle ; 

 abdomen with the first visible dorsal scguient scarcely longer than 

 second, with strongly reflexed margins, finely but distinctly punctured ; 

 legs rather long, reddish-testaceous. L. 3 mm. 



Male with the femora and intermediate tibia? somewhat thiclvcned, the 

 latter with a short strong spur at apex, Gth ventral segment of abdomen 

 emarginate. 



Very rare; under bark of old ehii stumps in company with ants, Lee, Kent 

 (Douglas and Scott); York (Hutchinson, one specimen); Nettlecomb, Somerset, 

 under oak bark, August, 1866 (Power, one specimen). 



THZBZIUM, Aube. 



This genus contains about a dozen European species, and is also 

 represented in India and North America ; it much resembles Euplectut^, 

 but is more convex and less linear, the head and thorax being narrower 

 than the elytra and abdomen ; two species have been described as 

 British, but they have since been proved to be the sexes of one 

 insect. 



T. brevicorne, Reich. ( ? hrevippiine, Chaud. ; latipenne, Tourn. ; 

 Chevrieri, Tourn. ; Eupledus hrevicornis, Denny, &c.) Elongate, rather 

 convex, varying in colour from reddish-chestnut brown to rufous, very 

 finely pubescent ; head hardly as broad as thorax, very finely punctured, 

 with two short converging frontal furrows ; antennae short and robust, 

 with the last joint very large ; thorax longer than broad, cordiform, with 

 three small equally deep fovese at base, which are connected by a fine 

 fuiTOW ; elytra plainly broader than thorax, varying in length according 

 to sex, narrowed in front and widened behind, broadest a little behind 

 middle, with a sutural and dorsal stria, the latter being very short ; 

 abdomen as broad as apex of elytra, parallel-sided, plainly margined, legs 

 moderately long, lighter or darker reddish-testaceous. L. 1^- mm. 



Male usually darker than female, with the thorax and elytra longer, 

 the latter being rather longer taken together than their breadth at apex ; 

 the third ventral segment also of the abdomen is slightly fovcate on each 

 side and the anal segment flatly impressed. 



Female usually lighter with the thorax and elytra shorter, the latter 

 Ijeing not quite so long as together broad {T. breciimnne, Chaud.). 



In moss, dead leaves, &c. ; not a rare species in north and middle Europe generally, 

 but extremely local in Britain ; Stephens records it as having been taken within 

 the metropolitan district, and in Norfolk, Suffolk and Lincolnshire; the only recent 

 locality that I know of is Scarborough, where it has been taken in some numbers by 

 Messrs. Lawson and Wilkinson. 



H 2 



