16 Dr. LEACirs Classification of the 'Notonectides, 



Spec. 1. Corixa coleoptrata. 

 C. ihorace rufo-griseo, elytris siiblutescentibus : maculis longitu- 



(linalibus nigricantibus. 

 Sigara coleoptrata, elytris totis coriaceis fuscis ; margine exte- 

 rior! flavo. Fabr. Si/st. R/iyng. 105. 4. 

 Habitat in Norfolci* aquis prope Norwich. 



Although the character by Fabricius does not accord with that 

 given above, yet as he drew his description from a museum speci- 

 men (which generally assumes the colour he mentions) I give his 

 synonym without any hesitation; but this insect is distinct from 

 the Siga7'a coleoptrata of Panzer, which is figured with a scutellum, 

 and most probably belongs to the genus Sigara as mentioned 



above. 



** Elytris ad apicem subivtundatis. 



The channel in the fore part of the elytra, at about two-thirds 

 from its commencement, is interrupted by an oblique transverse 

 elevated line, and it terminates abruptly before it reaches to the 

 apex of the elytron, and then it leaves the margin, inclining a 

 little inwards or backwards. 



a. Elytris thoraceqiie rugulosis. 



Spec. 2. Corixa striata. - i^i^H^i p- i^ 



C. thoraceelytrisque fuscis: lineolis flavicantibus transversis stria- 

 tis, dorso nigro, lateribus flavidis. 



Notonecta striata. Linn. Fn. Sv. 244. 904. Syst. Nat. i. 712. 2. 



Habitat in aquis stagnantibus. 



Descr. Elytra striis undulatis flavicantibus, margine exteriore 

 fusco. Thorax perfuscus lineolis transversis numerosissimis fla- 

 vicantibus. 



Spec. 3. Corixa stagnalis. 



C. fusca, thorace lineolis transversis numerosissimis flavicantibus, 



elytris fuscis flavido irroratis. 



Habitat 



