120 LATHRIDIID^. 



C. longicoUis, Zett. (Ins. Lapp., 200). A small, and entirely 

 ferruginous species, which may be easily distinguished by the very thick 

 rugose punctuation of the thorax, and by the convex, oval, and more or 

 less rugose elytra which are coarsely punctured in thick set rows ; the 

 pubescence is very fine and short. The head is narrower than the 

 thorax with short but distinct temples ; the antennae have the fourth 

 joint somewhat longer than broad, the following joints are short, and the 

 two first joints of the club are transverse ; the thorax is much narrower 

 than the elytra, as long as broad or plainly transverse, broader a little 

 before the middle, feebly dentate at the sides, with the hind angles 

 produced into a distinct tooth, very thickly and rugosely punctured, 

 and with a rather large fovea at middle of base ; elytra longish oval, 

 broader in the middle, moderately convex, with rounded shoulders, 

 with strong rows of punctures which become obsolete towards apex, 

 interstices nari-ovv and rugose ; male with the first joint of the anterior 

 tarsi slightly dilated, fifth ventral segment with a somewhat deep 

 transverse fovea. L. l^-lf mm. 



The species was first noticed as British by Mr. Pool, who took it 

 under bark at Epping ; Richmond Park (Rye and Champion) ; Darenth 

 Wood, under bark (Donisthorpe) ; Malvern, in cellar, and Sherwood 

 Forest, under bark (Tomlin) : according to Ganglbauer {I.e. iii. 804) it 

 is not rare in nests of Formica rufa and exsecta. 



C. crenicoUis, Mannh. (Germ. Zeitschi-., v. 37). Entirely yellow 

 or reddish-yellow, rather elongate ; head narrower than thorax, with 

 short but distinct temples behind the eyes, distinctly punctured ; thorax 

 broader than long, at broadest about as wide as the elytra, with the 

 sides strongly rounded and denticulate, thickly and compai-atively 

 strongly punctured, with a deep impression (round or transverse) before 

 the base ; elytra oblong, subparallel, plainly, though finely pubescent, 

 with the sides feebly rounded, and with I'atlier strong rows of punc- 

 tures, the interstices being more or less rugose ; the sculpture becomes 

 more or less obsolete towards apex ; legs yellow-red. Male with 

 the first joint of the anterior tarsi somewhat widened, and the 

 fifth ventral segment of the abdomen with a transverse impression. 

 L, lj-l|^ mm. 



Basildon, Berks, in dead and quite dry oak branches (Joy) ; Farnham 

 (Power) ; Chiddingfold, Surre}^, in moss in company with ants 

 (Donisthorpe) ; Peckham (ex Coll. Chaney) ; Wicken Fen, very 

 abundant in sedge stack refuse (Beare and Donisthorpe). 



It appears to be a scarce species, but has occurred in North Europe, 

 Germany, France, Spain and Madeira. 



The species is most closely allied to C. longicoUis, Zett., from which 

 it differs in having a broader thorax and more parallel elytra, and in its 

 distinctly more conspicuous pubescence ; from C. serrata, Payk., it may 

 be known by its smaller size, lighter colour, and more parallel and less 

 strongly punctured elytra. Superficially it resembles 0. elongata, Gyll., 

 but may be at once known by the shape of the thorax and the fact that 



