134 MANDIBULATA. — COLEOPTERA. 



sion on each side at the base, on the hinder margin itself, and a slight dorsal 

 channel: elytra as in Am. communis, but with a continuous series of im- 

 pressions on the margin : body beneath, and palpi, pitchy-seneous-black : legs 

 and base of the antennae rufous. 

 Very similar to Am. communis, but discriminated by having the legs entirely 

 ferruginous, and by the thorax; but I conceive it may, nevertheless^ prove to 

 be a mere variety of that insect, and that the two following species are not 

 sufficiently distinct, either from this or from each other, the dissimilarity of 

 size being the principal characteristic. 



Common beneath stones, and in gravel-pits, near London. " Kimp- 

 ton:'—Rev. G. T. Rudd. " Leith-liill."— Jfr. Waterhouse. 



Sp. 22. lucida. Nigra, suprh piceo-ccerulescens, antennarumbasi pedibusque totis 

 rufo-femigineis, thorace postice obsolete foveolato, margine laterali obscure fer- 

 rugineo. (Long. corp. 2j lin.) 



Ca. lucidus. Duftschmid. — -Am. lucida. Sieph. Catal. p- 28. No. 235. 



Closely allied to Am. familiaris, but only half the size, pitchy-black ; above 

 bluish : head smooth, black : thorax smooth, slightly glossy : impunctate, with 

 a very obsolete smooth fovea on each side at the base ; the lateral margins 

 obscurely ferruginous, and the basal margin a little tinted with the same hue : 

 elytra pitchy-blue, with the margin dull ferruginous; striated, the stria? 

 rather faint, the outer one with a few impressed dots at the base, and several 

 closely united at the tip, forming an interrupted series : legs and antennae 

 entirely ferruginous-red. 



Apparently rather scarce : I have seen few specimens only, which 

 were chiefly taken near London. 



Sp. 23. erythropa. Nigra, supra ccsrulescens, antennis pedibusgue rufo-ferrugi- 

 neis, thorace postice lave utrinque obsolete bifoveolato, margine laterali nigro. 

 (Long. corp. 2^ — 3 hn.) 



Ca. erythropus. Marsham MSS. — Am. erythropa. Steph. Catal. p. 28. No. 236. 



Also greatly aUied to the two preceding: deep seneous-black : above various 

 shades of blue, green, black, or violet, glossy : head smooth : thorax mode- 

 rately convex, with a very obsolete dorsal channel, impunctate behind, with 

 two obsolete smoo.th impressions on each side towards the angles, the lateral 

 margins black : elytra delicately striated, the striae impunctate, the marginal 

 one with an interrupted series of deep impressions : legs and antenna rusty- 

 red : the tips of the latter, and the palpi rather dusky. 



Taken on Hampstead-heath, at Hertford, &c. not very uncom- 

 monly. 



Sp. 24. atra. Atra, suhnitida, subconvexa, pedihus elongatis, femoribus aneo- 

 nigris, tibiis tarsisque piceo-rnjis, thorace postice utrinque bifoveolato. ' (Long, 

 corp. 3 lin.) 



Km. atra mihi.— Sieph, Catal. p. 28. No. 237. 



