2C4 CLAVICORXtA. [Rh 



i. Colour testaceous or ferruginous, sometimes with 

 indications of a darker shade on disc of thorax 

 and elytra. 



1. Punctuation of thornx close and fine .... R. DEPRESSES, F. 



2. Punctuation of thorax more or leas coarse, but 



varying in degree. 



A. Elytra depressed. 



n. Stria) on elytra finely punctured ; average 



length 3 mm R. PEBFOEATITS, Er. 



h. Striee on tlytra coarsely punctured ; average 



length 4 mm R. PARALLELOCOLLTS, Er. 



B. Elytra convex, cylindrical R. FERETJGUNEUS, Payk. 



ii. Prevailing colour pitchy or blackish.; base and apex 



of elytra to a greater or less extent light. 



1. Last segment of abdomen with a plain impres- 

 sion in both sexes, terminated on each bide by a 



small prominence R. NITIDULTTS. F. 



2. Last segment of abdomen simple R. DISPAB, Gyll. 



iii. Flytra black or brownish-black, with a plainly 



dt fined yellow spot on each a little before apex . . R. BIPUSTUIATUS, F. 



iv. Colour unicolorous black R. POLITUS, Hellw. 



v. Elytra blue or bluish-green ; head, thorax, and 



scutelluni shining black R CCERTJLEIPENNIS, Salill. 



It. cribratus, Gyll. Of a dark ferruginous colour, depressed, rather 

 shining ; head rather shorter than in most of the other species, thickly and 

 strongly punctured, antennae with the club truncate, a character which 

 Avill at once distinguish the species ; thorax about as long as broad, 

 gradually narrowed behind, very coarsely and diffusely punctured ; elytra 

 somewhat widened in the middle with rows of strong punctures ; under- 

 side of head and sides of body strongly punctured. L. 3-g- mm. 



Under bark and at roots of trees, especially oaks; not common ; Weybridge, Esher, 

 Richmond Park, lleigate, Tilgate Forest, Birch Wood, Dulwich, New Forest ; Mount 

 Etlgecumbe, Plymouth (Wollaston) ; Knowle; Robin's Wood, Ropton ; Sherwood 

 Forest ; Studley Park, Kipon, in fungus (Waterhouse) ; Scarborough ; Stretford ; 

 on decayed roots of lime trees, Withington Common, near Manchester (Chappell) ; 

 Hartlcpool ; Northumberland district, rare, Houshel and Hartford Bridge ; Scotland, 

 very rare, Solway district ; it is not recorded in Dr. Sharp's list, but I have lately 

 received a specimen taken by Mr. W. D. R. Douglas at Orcbardton near Castle 

 Douglas under fir bark ; Ireland, Gal way, locally common, and Westport (co. Mayo) 

 (J. J. Walker). 



XI. depressus, F. Light rust-red, with suture of elytra usually 

 darker ; body depressed ; head of male large, about as broad as thorax, 

 of female narrower ; thorax longer than broad, widest in front, thickly 

 and very finely punctured; elytra with very finely punctured stria?, first 

 interstice with a row of widely separated fine punctures (which is found 

 also in other species), second interstice widened and irregularly punctured 

 at base. L. 2-4 mm. 



Under bark of oak, fir, &c. ; somewhat local, but not uncommon, and apparently 

 generally distributed throughout the greater part of the kingdom. 



JR.. pcrforatus, Er. Of a light rust-red or testaceous colour with the 



