Bemlidium.] ADErnAOA. • 103 



3. Bluo, or prrcniisli, or l)l:ick, unicolonnis (hirfjcr sppoics) : 7?. d'cnnim, monticnhi, 

 qffine, nitidvlum, quhiqiifstria/itm.sfumuide.i (with lif:;lit Icjis) ;* Ji. lihiale, ulrocaru- 

 lexim, prasinum (witli bluck Icijs or black witli liijlitcr tiliise and tarsi). 



4. Dark l)liu' or black, unicolorous (very small species) : B. jiusillum, normannum, 

 Schuppeli, f/i/vipex, Mannerheimi. 



5. Daik blue or black with yellow spot near apex of elytra (very small species): B. 

 guttula, assimile, Clarki, dorin. 



6. Dark blue with distinct yellow spot near apex of elytra (larger species) : 

 B. biffuffalum, riparhun ; or obscurely luueous, with spot vi^-ible but indistinct: 

 B. cEtieum. 



7- Elytra with four light yellow, straw-coloured, spots, two at shoulder and two 

 towards apex : B. quadrimaculahun (very small), B. quadripustulatiun (intermediate), 

 B. quddrlgultatinn (lar<^er). 



8. Klytra with four orange spots or patches, two at shoulder and two at apex 

 (sometimes confluent) : B. saxatile, femoratum, ano//can>i.m, brvxellense, concinnum, 

 litlorale, JIuviatile, testaceum (in the last species the markings are often indistinct 

 and sutfused). 



9. Klytra with two distinct crescent-shaped patches at apes, and no other markings 

 (one of the largest species) : B. Innafur.i. 



10. Elytra testaceous either with distinct dark markings across middle : B. pallidi- 

 penne ; or with more or less suffused and indistinct dark markings towards sides and 

 apex : B. ephippium. 



11. Elytra with irregular yellow or testaceous markings on a dark ground : B. 

 articulatum, Sturmi, fumigahim, adustum, obliquvm {small species) ; B.Jlainmulaiuin, 

 varinm (larger species). 



12. Elytra brown or reddish brown, thorax rufous : B. riifescens. 



Group I. (Ocys, Stephens.) 



1. Elytra brown or reddish brown, thora.x rufous 

 (sometimes concolorous with elytra) ; lateral border 



of thorax widened B. UUFESCENS, Gucr. 



2. Upper surface entirely of a metallic blue colour ; 



lateral border of thorax not widened IJ. QUIXQUESTKIATUm, Gyll. 



B. rufescens, Guer. {7nela?iorephal'is, Stepli., tempest ivus, Stepli., 

 Iiarjialo'ulcs, Scrv.). Colour as above, occasionally unicolorous reddisli- 

 l)ro\vu ; antennae and palpi testaceous ; thorax short, transverse, about 

 as wide behind as in front, broadly margined, dorsal furrow distinct, 

 posterior angles acute, somewhat projecting, with depressions at angles 

 liiit without longitudinal fold; elytra oval, rather convex, with plain 

 punctured striae on disc, the apex and sides smooth ; third interstice 

 with one pore ; legs testaceous. L. 4-5 mm. 



Marshy places, at roots of grass, (tc, also hibernating under bark. RuMier local, 

 but widely distributed, and common where it occurs. Scotland, local, Lowlands, 

 Forth, Solway, Clyde. Ireland local, and not so common as in England. 



B. quinquestriatum, Gyll. ('■?//-?v?/.s-, Stejih.). Upper side liluish 

 or dark metallic green ; antennae and palpi reddish testaceous, penultimate 

 joint of the latter dusky ; thorax shaped much as in the precetling species, 

 except that the margins are not so wide, nor the posterior angles so acute ; 

 elytra ol)long-ovate, disc with plaiidy punctured striae, the two next the 

 suture entire, the three next alibreviated, the rest rudimentary or nearly 



* In B. nil'idnlum and often in B. affine the femora are more or less dusky, but never 

 entirely deep black as iu B. libiale. 



