616 CORIXINA. 



large, triangular, remote. Rostnim unarticiilated ; Lahrum cross- 

 wrinkled. 



Thorax. — Pronotum transverse, very short, subtriangular, pointed 

 in front. Scutellum small, triangular. Elytra soft, flexible ; Clavus 

 witli a distinct trapezoidal piece at the base ; Corium ; the anterior 

 margin on the basal ^ incrassated, shining and coloured like the disk. 

 Wings with 1 cell on the anterior margin, with a nerve projecting at 

 the end. Stermom; 'Prosternum short, laterally bilobed, the lobes 

 quadrangular ; Mesosternum short, transverse, anteriorly deeply 

 excised ; Scapulcv linear, oblique ; Iletastenium small, produced into 

 a triangular xyphus ; Pleurcs trapezoidal, without suture ; Para- 

 pleitrce wanting. Legs; 1st pair, coxce oblong, stout, somewhat 

 compressed, as long as the thighs ; tibice ; in the ^ clavate, the base 

 curved ; tarsi ; in the ^ articulated to the tibiae, oblique-oval, com- 

 pressed, ciliated beneath, without apical claw ; in the ? anchylosed 

 with the tibise, rhomboidal, with 1 setaceous claw ; 2nd pair, coxce 

 ■Jrd tlie length of the thighs, compressed ; thigJis smiple, elongate ; 

 tibi(S slender, -Jrd the length of the thighs ; tarsi rather longer than 

 the tibioe, 2-jointed, with 2 straight, setaceous claws ; 3rd pair, coxes 

 ^ shorter than the thighs, compressed; thighs clavate, base and 

 apex narrowed ; tibice and tarsi as in Corixa, the latter dilated ; above 

 on the external margin densely pilose, the 2nd joint |- the length of 

 the 1st, with 1 short claw. 



Abdomen as in Corixa. 



Species 1. — Sigara minutissima. 



NoTONECTA MINUTISSIMA, Lin. F. S. 905 (1761) ; S. N. 713, 3 (1767). 



SiGAEA MINUTA, Fab. S. R. iv, 105, 6 (1803) ; Leach, Lin. Soc, Traus. 

 xii, M (1817); Fall. Hem. Suec. i, 179, 1 (1S29) ; 

 Bum. Handb. ii, 188, 1 (1835) ; Fieb. Eiit. Mon. 13, 

 ], tab. 1 (1845); H.Schf. Wanz. ix, 46, fig. 907 

 (1850); Fieb. Gen. Hyd. 29, 20, tab. 4, d (1851); 

 Flor, Rhyn. Liv. i, 803, 1 (1860) ; Fieb. Europ. Hem. 

 89, 2 (1861). 



CoKlXA MINUTISSIMA, H. Schf. Nom. Eat. i, 63 (1835). 



Grayish-yellow or dark gray. 



Head yellowish-white, with a brown or reddish-brown central 

 streak. 



