CORIXID2E. 601 



1st 4, m tlie $ tlie 1st 3 segments, black ; the remainder pale 

 ochreous. 



Length, 3J 3* lines. 



Very common in stagnant water, throughout the year. 



Species 8. CORIXA. LINN^I. 



CORISA LINN EI, Fieb. Syn. Coris. No. 11 (1848) ; Spec. Coris, 25, t. 2, 

 fig. 4, pate (1851) ; Fieb. Europ. Hera. 94, 17 (1861). 

 ? COHIXA EEGULARIS, H. Schf. Wanz. ix, 52 & 57, t. 295, fig. 910 (1850). 

 CORISA (COBISA) LINNEI, Flor, Rhyn. Liv. i, 794, 5 (1860). 



Above fuscous-black, dull. Pronotum short, with 6 narrow, trans- 

 verse pale lines. Clavus and corium throughout with very fine, 

 close, parallel, undulating pale lines. 



Head yellow ; Face ; in the <$ very slightly concave, the depres- 

 sion reaching upwards to the lower angle of the eyes. 



Thorax. Pronotum short, with 6 fine, entire, transverse yellowish 

 lines ; the longitudinal middle line only in the least degree raised in 

 front ; side margins very narrowly yellowish. Elytra ; Clavus and 

 Corium with very fine, rather close, parallel, entire, yellowish lines, 

 slightly undulating except on the basal \ of the clavus, where they 

 are straight, the 1st 3 or 4 being also broader ; on the corium they 

 are continued to the apex ; towards the inner side, below the end of 

 the clavus, faintly interrupted ; Corium ; anterior marginal channel 

 pale livid yellowish ; line of the membrane-suture black, indis- 

 tinct ; Membrane shining, the lines on the basal \ very fine, trans- 

 verse, dentate, but on the inner margin straight ; on the posterior 

 the lines are broken, short, and irregular ; anterior and posterior 

 margins broadly blackish, the former without lines, on the latter they 

 are also obsolete, or at most but faintly indicated. Sternum ; black 

 in the middle, sides and xyphus pale yellowish. Legs pale yellowish ; 

 1st pair, palcB cultrate, in the $ nearly of equal breadth through- 

 out, suddenly rounded from above at the apex, in the ? more 

 pointed ; margins beneath, and cilia, brown ; 2nd pair, thighs brown 

 posteriorly ; tibia light brown, with a brown spot at the apex ; 3rd 

 pair, tibia and tarsi with black cilia. 



Abdomen above black ; Connexivum whitish-yellow ; underside pale 

 yellow ; in the $ the 1st 4 or 5 segments blackish in the middle ; 

 Genital segments brown, 



