338 CLAVICORNIA. [Atomarut. 



verse impression rather deep without a fold on each side ; elytra rather 

 strongly widened hefore middle, sparingly and finely punctured, black 

 with extreme apex and shoulders obscurely yellowish- brown ; legs 

 testaceous. L. l^-lf mm. 



In haystack refuse, &c. ; also in fungus in cellars ; very local and not common ; 

 London district, rare, Forest Hill; Knowle; Birmingham ; Gloucester, taken in 

 some numbers by Professor Allen Harker in fungus in a wine cellar in company with 

 Cryptophagus and Orthoperus atomus ; Burton-on-Trent ; Stretford, near Man- 

 chester ; Northumberland district ; Scotland, rare, " Dalmeny Woods, near Edin- 

 burgh," Murray's Cat. 



A. divisa, Rye. This species somewhat closely resembles A. nigri- 

 pennis at first sight, but is very distinct from it ; the general form is 

 shorter and more oblong, and much less narrowed in front ; the antennae 

 are shorter ; the thorax is longer with the sides more parallel and more 

 evenly rounded, with the transverse basal depression scarcely visible ; 

 the punctuation, especially of elytra, is distinctly stronger, and the 

 femora are darker ; the same characters will also distinguish it from A . 

 munda-; it is most closely allied to A. rubricollis, Bris., from which it 

 differs in its much shorter build, the much stronger punctuation of its 

 elytra, which are less contracted behind, its black scutellum, almost 

 quadrate thorax, and darker femora. L. 1| mm. 



This species rests on a single specimen in Mr. Rye's collection, locality 

 unknown ; it is certainly very distinct from all our other species. 



A. munda, Er. Closely allied to A. nigripennis, but with the 

 elytra usually not so deeply coloured, sometimes almost reddish ; it is 

 also longer and not so broad in form ; the thorax is more closely punc- 

 tured, and has the sides very slightly less straight before base ; the 

 transverse impression at base is bounded by a fold on each side ; the 

 elytra are a little more plainly punctured and the breast is darker. L. 

 IJ-l^ mm. 



In haystack refuse, rubbish-heaps, cow-houses, cellars, &c. ; local ; London district, 

 local but common, Sheerness, Lee, Eghani, Forest Hill, Esher, Croydon, Cowley, 

 Baling; Staines ; Knowle; Scarborough; Stretford, near Manchester (by sweeping); 

 Lancaster; Northumberland district, very rare, Gosforth and Cullercoates ; not re- 

 corded from Scotland ; Ireland, near Waterford (Power). 



The thorax of this species appears sometimes to be somewhat 

 darkened ; this is chiefly, however, the case with old specimens that have 

 not been set when fresh ; the general colour, however, is certainly not so 

 bright as in A. nigripennis. 



A. impressa, Er. One of our larger species ; oblong-oval, not very 

 convex, shining, of a lighter or darker fuscous-brown colour, thorax 

 usually darker, upper surface clothed with fine and scanty ashy pubes- 

 cence ; antenna? rather long, reddish or reddish-brown ; thorax only 

 slightly transverse, narrowed in front, very feebly rounded at sides, base 



