sot CLAVicoRNiA, [Silcanus. 



i. Dull ; tliorax mucli longer tlijin broad; anterior angles 

 produced in a very strong sharp point. 

 1. Elytra depressed, about as broad as thorax, antennaj 



shorter and stouter S. BIDENTATUS, F. 



2 Elytra convex, distinctly broader than thorax, autennse 



longer and more slender S. SIMILIS, Er. 



S. surinamensis, L. (frumentarmSjY. ; sexdentatus, F.). Narrow, 

 almost parallel-sided, depressed, fuscous brown, rather thickly clothed 

 with fine greyish-yellow pubescence ; head a little narrower than thorax, 

 rather large, narrowed in front of antennae, very thickly. and deeply punc- 

 tured ; antenniB rather stout ; thorax slightly narrower than elytra, longer 

 than broad, serrate at sides, with three distinct raised keels, very thickly 

 punctured ; the anterior angles project in a more or less strong point, 

 which is however not, or not much, more pronounced than the preceding 

 denticulations ; elytra rounded at apex, with regular punctured striae, 

 alternate interstices elevated ; legs ferruginous. L. 3 mm. 



In sugar, dried figs, rice, &c. ; an introduced and cosmopolitan species; London, 

 Dublin, and other towns, not uncoinmon ; it is, however, occasionally fouud at a dis- 

 tance from habitations. Mr. Bold remarks that in warm seasons it becomes so numerous 

 in many grocers' shops in Newcastle as to be a nuisance, rendering unsightly the 

 sugar and dried fruits among which it lives and breeds. Professor Westwood says 

 that he has specimens from Yorkshire, Eppiug Forest, and Scotland, taken under bark 

 of trees. 



S. unidentatus, F. Rather shining, reddish-yellow or brownish- 

 red, Avith very short and tine yellowish pubescence ; head triangular 

 narrowed before eyes, antennae with a plainer club than in the preceding 

 species ; tliorax a little longer than broad, anterior angles produced in a 

 distinct but not very elongate point, Avith sides not sen-ate and narrowed 

 behind, together with head very thickly punctured, posterior angles den- 

 ticulate ; elytra with very close punctured stiise, interstices very narrow ; 

 legs ferruginous. L. 2f mm. 



Under bark of beech, oak, hornbeam, &c. ; local, but often common where it occurs; 

 London district, widely distributed ; New Forest ; Exeter; Stretford, near Mauclies- 

 ter (flying) ; not recorded from Scotland or Ireland ; the localities known for this 

 species seem to show that it has been introduced, and has to a certain extent natural- 

 ized itself. 



S. bidentatus, r. {laricis, Chevr.). Very like the preceding, but 

 larger and evidently duller ; the anterior angles of thorax are produced 

 into a longer, sharper, and evidently more distinct tooth ; the thorax is 

 longer and narrower, and has two shallow longitudinal grooves ; the joints 

 of the antennae are longer and the club is more marked, and the tibiae 

 are less dilated at apex, L. 3 mm. 



Under bark; very rare; Dunham Park, Jtanchester, under bark of a large branch 

 of oak which had been broken off in a gale (Cliappell) ; Newcastle, very rare (Bold) ; 

 Paisley, one specimen under tir bark (?ilorris Young). 



S. similis, Er. (far/i, Guer.). Allied to >S'. vnulenicdus, but easily 



