Atomaria."] CLAVICORNIA. 333 



A. nigriventris, Steph. (nana, Er.). Convex, subcylindrical, 

 shining, with somewhat coarse pubescence, fuscous with shoulders and 

 apex of elytra lighter, or with thorax black and elytra entirely or 

 almost entirely reddish-brown ; antenriae rather stout, ferruginous ; 

 thorax not very transverse, with sides slightly rounded, diffusely and 

 deeply punctured, base strongly margined, basal depression not bounded 

 by longitudinal folds; elytra convex, sparingly and rather strongly 

 punctured ; legs ferruginous. L. 1 J mm. 



In haystack and other vegetable refuse ; generally distributed throughout England ; 

 common in the London district; somewhat less common further north; Scotland, not 

 common, Solway and Forth districts; Ireland (Haliday). 



A. umbrina, Er. (fuscicollis, Mannh. ; plicicollis, Makl.). Closely 

 allied to the preceding, but distinguished by the structure of the thorax, 

 which has the basal depression furnished with a raised longitudinal fold 

 or ridge at each side ; the sides and posterior angles are also more evi- 

 dently margined ; the basal folds are sometimes very obscure, but the 

 species may apart from them be distinguished from A. nigriventris by its 

 usually slightly larger size, and less deeply punctured surface ; legs 

 reddish-yellow. L. If mm. 



In moss, dead leaves, vegetable refuse, &c. ; occasionally found in sand-pits ; not 

 uncommon in some places, but local ; London district, generally distributed ; Glan- 

 villes Wootton ; Holm Bush, Brighton ; Gloucestershire ; Market Bosworth, Leicester- 

 shire ; Cransley, Northamptonshire; Birmingham district; Repton; Mablethorpe, 

 Lincolnshire ; Chat Moss ; Northumberland district, very rare ; Scotland, not 

 common, Solway, Tweed, Clyde, Forth, and Tay districts; Ireland, near Dublin, &c. 



A. Wcllastoni, Sharp. At first sight this species bears a very 

 close resemblance to the two preceding ; it may, however, be at once 

 known from them by the very much finer and closer punctuation of the 

 thorax, and the shorter and more delicate pubescence ; in this latter 

 respect it somewhat resembles A. elongatula, but is less elongate, and 

 has the antennae shorter and stouter ; from A. fumata it is distin- 

 guished by its finer punctuation, more delicate pubescence, and longer 

 and thinner antennae ; it appears to be a good and distinct species 

 L. If mm. 



Very rare ; Scotland, Forth district ; found by Dr. Sharp on the banks of a small 

 loch near Edinburgh. 



A. linearis, Steph. Elongate, narrow and linear, parallel- sided, 

 depressed, reddish or reddish-brown, closely and finely but distinctly 

 punctured, and clothed with very short and not very thick greyish 

 pubescence ; antennas and legs ferruginous ; thorax as long as broad, 

 quadrate, as broad as elytra, with the base finely and evenly margined ; 

 the punctuation of elytra is a little less close than that of thorax ; the 

 species may at once be known by its very narrow and parallel form, 

 in conjunction with the fine posterior margin of its quadrate thorax. 

 L. 1 mm. 



