7(3 ' [September, 



than broad, widest ill front, thickly and very finely punctured; elytra with very 

 finely punctured striae, first interstice with a row of fine punctures, second interstice 

 widened and irregularly punctured. Length, 1 — 2 lin. 



Not uncommon under bark of pine and Scotch fir ; widely dis- 

 tributed. 



2. Punctuation of thorax more or less coarse, but varying in degree. 



A. Elytra depressed. 



a. Average length, \\ lin. ; striae on elytra finely punctured. 



i2. perforatux, Er. — Light rust-red or testaceous ; thorax longer than broad, 

 widest in front, very slightly contracted behind, with anterior angles plainly marked, 

 rather coarsely punctured ; club of antennae oval ; elytra depressed, parallel to 

 middle and thence gradually narrowed, with rather weak finely punctured striae. 



Local ; under bark and at sap ; C^batbam, Sbeerness, Dareuth, 

 Micklebam, Sbirley, Earnham, Esber, Buddon Wood (Leicestershire). 

 This species is very liable to be confused with others, but its small 

 size, depressed form, and the finely punctured stride of the elytra, will 

 serve to distinguish it. 



h. Average length, 2 lin. ; stri* on elytra coarsely punctured. 



R. parallelocoUis, Er. — Ferruginous, with disc of thorax and hinder half of 

 elytra often clouded with a darker colour ; head nearly as broad as thorax ; thorax 

 longer than broad, widest in front, very slightly nari'owed behind, coarsely punc- 

 tured ; elytra depressed, especially in the middle, with rather strong plainly 

 punctured striae. 



Xot common under bark and at sap, althouojh found in some 

 numbers where it occurs ; the late Archdeacon Hey once took it in 

 numbers near York in fungus in company with Atomaria Jlmetarii ; 

 Darenth, Mickleham, Forest Hill, Esher, Shirley, &c. 



This species is very variable as to colour ; the prevailing colour 

 is as given in the above descriptions, but many individuals are uni- 

 colorous rust-red, and some species are nearly as dark as B. dispar, 

 from which they may be distinguished by their depressed form and 

 broader and squarer thorax ; from B.ferrugineus, which it most closely 

 resembles, it may be separated by its depressed form and larger head. 



B. Elytra convex, cylindrical. 



R. ferrugineus, Payk.— Eather dark rust-red, unicolorous ; head small, con- 

 siderably narrower than thorax ; thorax longer than broad, scarcely narrowed 

 behind, very strongly punctured ; elytra convex, with strongly punctured strise ; 

 under-side deeply punctured, especially on the sides. Length, If— 2 lin. 



Found under bark of pine ; also under bark of oak near the 

 burrows of Cossus ligniperda ; local, but widely distributed. 



