CORIXINA. 591 



Species 1. — Plea minutissima. 



NoxoNECiA MINUTISSIMA, Fab. E. S. iv, 59, G (179,i) ; S. R. 140, 10 



(1803) ; Olio. Eiic. viii, 3S9, 12 (17S9) ; 



Laf. Gen. iii, 150 (1807). 

 Plea — Leach, Trans. Liu. Soc. xii, 14, 1 (1817); 



Fieb. Europ. Hem. 101 (1861). 

 Ploa — {Stepk.) Bum. Haudb. ii, 189,' 1 (1835) ; Am. 



etServ. Hem. 449, 1 (1S43) ; Fieb. Eut. 



Mou. 17, 1, t. 1, figs. 27—35 (1844). 



Ciuereous-gray clouded with brown, varying in depth of colour, 

 slightly shining. 



Head oclireous, punctured, with a smooth, brown, longitudinal line 

 in the middle. Eyes brown. Rostrum ochreous, last joint black. 



Thorax. — Pronotum anteriorly ochreous, punctures large, the 

 intervals reticulated. Scutellum brown, smooth, the sides finely 

 creuate. Elytra ; Clavus and Coritim more or less clouded with 

 brown, covered with round black or brown punctures ; Corium; base 

 and 1 or 2 undefined »pot^ on the disk pale, the impressed line 

 widfhin the anterior margin brown. Leys ochreous, base of the thiyhs 

 s-oraetimes dusky ; apes of thighs, tihice, and tarsi, piceous ; claws 

 black. 



Abdomen beneath pitchy black, clothed with close appressed hairs. 



Length, I — IJ line. 



Common amongst the vegetation in stagnant water, in spring and 

 autumn. 



Section h.—CORIXINJ.'^ 

 Family L— CORIXIDiE. 



Genus 1. — Corixa, Geoffr. 



Long-oval, subparallel, convex above, smooth and usually shining. 



Head transverse, scutellate, including the eyes scarcely wider 



than the pronotum ; Crown imperceptibly separated from the face, 



convex, vertical in front; Face; in the $ flat or concave, in the 



$ generally convex. Anteniice concealed, subocular, very short, 



* Pa-e 49. 



