58 CLAVIOORNIX. [Choleva. 



II. Posterior angles of thorax blunt or rounded ; size 



smaller. 

 i. Upper surface dull, shagreened or alutaceous be- 



tween punctures - C. WILKINI, Spence. 



ii. Upper surface shining, smooth between punctures C. ANISOTOMOIDES, Spence. 



C. velox, Spence. Oval, dull, ferruginous-red, with the head brown, 

 reddish in front, very finely punctured; antennae long and slender, 

 reddish-testaceous, with the penultimate joints often darker; thorax 

 transverse, as broad behind as elytra, with sides rounded and narrowed 

 in front, posterior angles right angles, pointed a little inwards, very finely 

 punctured ; elytra scarcely widened in middle, very thickly and finely 

 punctured, with very indistinct striae ; legs ferruginous, anterior tibiae 

 somewhat widened at apex. L. 2|-3 mm. 



In dead leaves, haystack refuse, carcases, &c. ; common and generally distributed 

 throughout the greater part of England ; Scotland, not uncommon, Tweed, Solway, 

 Forth and Clyde districts ; I have seen no record from Ireland, but it is probably 

 common in that country. 



C. Wilkinij Spence (prcecox, Er.). Much smaller than the pre- 

 ceding, and of an oblong-oval shape, gradually narrowed behind, and 

 with the elytra considerably narrower in proportion ; colour reddish or 

 brownish; antennae not as long proportionally as in C. velox; thorax 

 transverse, slightly broader than elytra, very finely punctured, with 

 posterior angles obtuse ; elytra rather narrow and almost truncate at 

 extreme apex, with the punctuation fine, but more distinct than on 

 thorax, with obsolete or very feeble striae ; legs reddish j anterior tibiae 

 slightly widened towards apex. L. 2-2| mm. 



In dead leaves, moss, haystack refuse, &c. ; not as common as C. velox, but very 

 generally distributed throughout England ; Scotland, not common, Solway and Forth 

 districts ; it has been taken in Darenth Wood in company with Formica fuliginosa. 



C. anisotomoides, Spence. This species is very easily distin- 

 guished from the preceding by its more shining appearance, and short 

 oval form ; it is very convex, of a ferruginous brown colour, which is 

 somewhat variable ; antennae rather long and slender ; thorax transverse, 

 as broad at base as base of elytra, very thickly punctured, posterior angles 

 obtuse ; elytra oval, convex, with the striae, except the usual sutural 

 stria, quite obsolete, somewhat distinctly punctured, with the spaces 

 between the punctures smooth; legs reddish. L. 1^-2 mm. 



In moss, dead leaves, &c. ; not uncommon, but local ; London district, generally 

 distributed; Essex; Hastings; Glanvilles Wootton; Exeter; Bristol; Knowle, jiear 

 Birmingham ; Stratford-on-Avon ; Hunstanton, Norfolk ; Northumberland district, 

 not uncommon ; Scotland, local, in moss, Tweed and Forth districts. 



(Sub-Gen. Ptomaphagus, Hellwig.) 



The species belonging to this sub-genus are characterized by having 

 the first joint of the intermediate tarsi of the male dilated and by the 



