150 CLAVICOttNIA. [Phalacrns. 



towards sides ; elytra finely striate, with a rather close and regular row 

 of very fine punctures near each stria, and each interstice furnished with 

 a longitudinal row of punctures which are somewhat obsolete, although 

 hardly smaller than those near strise ; the sutural stria is rather deep 

 behind ; under-side with short and thin greyish pubescence ; legs dark 

 pitchy-brown ; the shape and sculpture will distinguish this from the 

 allied species. Size variable. L. l|-2j mm. 



By sweeping in marshy places, on Carex. &c. ; local ; Norwood ; Cowley ; Shipley, 

 near Horsham ; Brandon, Suffolk ; Norwich; Glauvilles Wootton ; Devon; Swansea; 

 Horning, Wickcu and Burwell Fens ; Coleshill and Knowle, near Birmingham ; not 

 recorded from further north. 



OXiXBRUS, Erichson. 



This genus, taken in its widest sense, as including Stillus, comprises 

 about fifty species, which are very widely distributed, representatives 

 being found in North and South America, South Africa, Ceylon, &c. ; 

 they are usually taken in flowers or at the roots of plants ; thirteen 

 species of the genus Olibrns proper occur in Europe, of which seven are 

 found in Britain ; the genus is distinguished from Stilbus by having 

 the metasternum prolonged between the intermediate coxse, and the 

 posterior femora emarginate and not widened on their inferior margin. 



I. Head and thorax brown ; elytra reddish or brownish- 

 yellow, with the suture and outer margin brown . . 0. COKTICALIS, Panz. 



II. Upper surface b'ack or brownish with or without a 

 more or less distinct metallic reflection. 



i. Length 2-2 mm. 



1. Antennae black with basal joints reddish ; upper 



surface black with a metallic green tinge ... 0. .ENETTS, F. 



2. Antenna? yellow or yellowish-red 



A . Colour brownish, gradually lighter towards apex ; 



posterior angles of thorax obtuse O. LIQUIDUS, Er. 



B. Colour deep bronze black ; posterior angles of 



thorax sharp right angles, slightly produced. 



a. Form longer and narrower O. PARTI CEPS, Muls. 



b. Form shorter and broader O. HELVETICUS, Tourn. 



\\. Length loss than 2 mm. 



1. Form broader and more convex ; upper surface 

 not lighter towards apex ; posterior angles of thorax 



right angles 0. MiLLEFOLii, Taylc. 



2. Form narrower and less convex ; upper surface 

 lighter towards apex ; posterior angles of thorax 



obtuse 0. PYGMJEUS, Sturm. 



O. ccrticalis, Panz. Oval, convex, shining ; elytra testaceous with 

 tlio suture and margins irowu, head and thorax brownish; head very 

 finely and obsoletely punctured ; antennae reddish-yellow ; thorax im- 

 punctate, rather lighter at sides, posterior margin sinuate near scutellum ; 

 elytra with two distinct striie near suture, and with very feeble traces of 

 other striae, interstices irregularly and very finely and delicately punc- 



