236 HKlTISIl OimiOFTERA. 



forma vulgari, glabri, iiigri, anteriores picei, posticorum femori- 

 bns subtus flavis tibiisque annulo ad basin albo. (Zett. 'Orth. 

 Suec." p. 89, 1821.)] 



MALI; IMA<;<> (PL XXIII, fig. 6). --General colour 

 dark brown with a ruddy tint in places. Small. 

 Length 12-1-3 mm. Apex of palpi strikingly pale, 

 against the dark jaws. Vertex produced in a triangle 

 between the eyes ; foveolae oblong, rather shallow but 

 well marked, median sulcus of frons moderately deep 

 below the ocellus. Pronotum with cross furrow very 

 nearly in the centre, but perhaps a little nearer the 

 front ; a black interrupted streak on each side ; lateral 

 carinae angled abqut the middle of the prozona ; in 

 front of the angle carinae nearly parallel ; hind margin 

 rather angled than rounded. Elytra- (PI. XX, fig. 5) 

 longer than abdomen ; pale brown, somewhat spotted ; 

 region between medius and cubitus narrow, cross 

 nervures sub-regular. Wings smoky towards the tip. 

 Legs somewhat ruddy. Abdomen dark, yellow below, 

 bright ruddy at the apex. 



EMALE IMAGO (PL XXIII, fig. 6). --Colour similar to 

 that of the male, except that the mid-dorsal region is 

 usually green, causing this sex to closely resemble that 

 of 0. viridulus ; but the palpi are very distinctive. 

 Bulk much more considerable than that of the male. 

 Lengtii- 18-19 mm. Antennas rather shorter than 

 in the male. Elytra as long as, or longer than, the 

 abdomen; anal area green. Abdomen and legs not so 



brioiitlv coloured as in the male. Valves of the on- 



* ^ 



positov without an external tooth, lower ones with 

 inner margin produced into a rather sharp point. 



DISTINCTION FROM 0. viridulus. (1) The darker colour 

 of 0. rufipe*. (2) The distinctly pale palpi. (3) The 

 elytra spotted in the area between media and cubitus. 

 (4) The brightly ruddy abdomen. 



Sometimes 8. bicolor has a reddish apex to the 

 abdomen in the male, so the structure should be 

 examined with the table of genera on page 231 to 



