594 CORIXINA. 



punctures j and many close, narrow, short, angulated, or twisted 

 yellow streaks, somewhat transverse but not forming lines, rather 

 stronger at the base of the clavus, but otherwise alike on it, the 

 corium and membrane ; Emholiicm dull pale livid whitish, the 

 marginal channel beyond it inwardly darker livid, outwardly with 

 black and yellow streaks. Sternum yellow, black in the middle. 

 Legs brown-yellow or yellow ; 1st pair, tihice, in the (^ , with a stout 

 spine outwardly at the apex ; pcilce, cultrate, in the ^ , gradually a 

 little widened from the base, the apex broad, obtuse, suddenly 

 rounded from above ; in the ? curved scarcely widened beyond the 

 base and gradually rounded to a point ; 2nd pair, tlngJis, in the 

 cJ J a little widened posteriorly, finely dentate beneath near the apex ; 

 tihice, in the (J, on the inner side at the base with a very narrow, 

 thin enlargement ; 3rd pair, cilia black. 



Abdomen above black, yellow on the sides ; underside yellow, the 

 first 2 or 3 segments black in the middle. 



Length, 5|- lines. 



Common in stagnant waters in spring and autumn. 



Sjoecies 2. — Corixa Panzeri. 



SiGAEA STRIATA, Tunz. F. G. 50, 23, noil Lin. 



CoEiSA Panzeei, lieh. Spec. Coris. 15, 3, t. ], fig. 3, palse (1851); 

 Europ. Hera. 92, 7 (1861). 



Puscous-black. Fronotum with 12 — 13 fine transverse yellow lines, 

 the first 1 or 5 mostly entire. 



Head pale yellow ; Croion at the base blackish ; Face ; towards the 

 sides with a few long subprominent hairs ; in the ($ with a large 

 oval depression, the broadest part occupying the whole space between 

 the eyes. Eyes black. 



Thorax. — Pronotum with 12 — 13 fine, transverse yellow lines, the 

 first 4 or 5 mostly entire, the rest irregular and interrupted 5 pos- 

 terior margin very narrowly yellow. Elytra with fine, undulating, 

 angulated, interrupted, transverse yellow streaks, in places slightly 

 narrower, so that the elytra appear shaded ; the streaks on the base 

 of the clavus distinctly broader, on the inner and posterior margins of 

 the membrane directly transverse ; Clavus and corium almost imper- 

 ceptibly punctured ; Corium with very fine, long, distant, sub- 

 appressed, yellowish hairs ; anterior marginal channel livid whitish 



