Dr. Leach's Classification of the Notonectides. 15 



Notonecta minutissiiiia. Linn. Fn. Sv. 244. 905. 



Syst. Nat. i. 713. 3. 



Habitat in rJvis, lacubus vulgatissime. 

 Long. Corp. 1 lin. 



Linne has described this species so minutely as to leave no doubt 

 with respect to the above reference; in the twelfth edition of his 

 Sijstema Naturce, and in the last edition of his Fauna Suecica, he 

 has given the following characters: " N. elytris cinereis ; muculis 

 fuscis lougitudinalibus. Magnitude minima arenulce ; depressa est. 

 Pedes posteriores longiores; primum par minimum. Habet alas, ely- 

 tra, scutellum." 



Sigara minutissima is found in every part of Great Britain ; I 

 have observed it in the Lake of Killarney, and in othtr lakes in 

 the south of Ireland ; in the north of England, near Carlisle, and 

 in Derwentwater; in Loch Lomond and Loch Katerine in Scot- 

 land ; in the river Tavy in Devon ; and I have frequently received 

 it from the Norfolk collectors : whence we may infer that it occurs 

 in that country. 



To this genus probably belongs the Sigara coleoptrata of Panzer, 

 Faun. Ins. Germ. In. 50. 24. 



Gen. 4. Corixa. 

 The thorax is more or less produced behind in all the species 

 of this genus ; but it is not evident in the first division of the ge- 

 nus until the elytra have been elevated. The front, the under 

 parts of the body, and the legs, in all the British species, are yel- 

 lowish. 



* Elytris ad apicem subgradatim acuminatis. 



The channel on the anterior margin of the elytra in this divi- 

 sion is uninterrupted, and gradually disappears before it reaches 

 to the extremity of the elytra. 



Spec. 



