Horrell ; .4 new British Beetle {Chaetocnema condueta). 83 



its large head without keel, and its large labrum, and with the 

 latter in its regularly punctured elytra. It would appear that 

 the introduction of this species into the British list will necessi- 

 tate the dropping of the genus Plectroscelis and the including 

 of our species P. concinna Marsh, under Chaetocnema, as is 

 done in most modern continental woi^ks. 

 Chaetocnema conducta Motsch : — 



Ovali-subcylindrica, sat convexa, subtus nigra, antennarum 

 basi tibiis tarsisque testaceis, capite prothoraceque aeneo-vel 

 aurichalceo-viridibus, illo carina faciali lata, deplanata, fronte 

 punctata linea media laevi, hoc brevi, apicem versus parum 

 angustato, subtilissime coriaceo, sat crebre et subtilius punctato, 

 elytris stramineis, profunde punctato-striatis, callo humerali 

 subprominulo limboque suturali et laterali nigris. — Long. 

 1.5-2.5 mm. 



Motsch. Bull. Mosc. i838.i8o.t.3.f.d.D. (Haltica).— Foudr. 

 Mon. 104. — All. Mon. 278. — Kutsch. Wien. Monat. 1864/ 320 

 (326). — Redtb. Faun. A. 2. 511 (PlectrosceHs). — Weise, Fauna 

 Austr. 6. 761. 



Oval-cylindric, moderate^ convex. 



Head and thorax dark metallic green, frequently with brassy 

 reflection, elytra straw coloured, with a band at the suture, 

 the lateral margins and the projecting shoulders black. The 

 dark sutural band extends to the first row of punctures ; and 

 the marginal band in front extends to the outermost row of 

 punctures ; and is narrower behind the middle and is joined to 

 the sutural band. 



Antennae reddish-brownish with the last four or five joints 

 more or less brown. 



Underside black ; apex of anterior and intermediate femora, 

 all the tibiae ind tarsi reddish-yellowish-brown. 



Head and thorax finely shagreened, shining, forehead 

 between the antennae wide and not keeled, moderately thickly 

 punctured with a longitudinal band above the middle im- 

 punctate. 



Thorax about twice as wide as long, with slightly rounded 

 sides, slightly narrowed towards front, somewhat thickly and 

 finely punctured, with punctures stronger at sides, and with a 

 row of strong punctures at the basal margin. 



Elytra somewhat wider than thorax, rounded behind, 

 deeply punctured in rows with the interstices slightly raised, 

 and very finely punctured ; shoulders somewhat prominent. 

 Winged. 



Male with slightly widened first tarsal joint. 

 In Alpine regions of Switzerland, South Tirol. Rare in 

 Austria in damp places on the margin of ditches and streams. 

 Commoner in Spain and South France to South Russia and the 

 Caucasus. North Africa. Syria. 



igi2 Mar. i. 



