14 Dr. Leach's Classification of the 'Notonectides. 



Spec. 1. Plea minutissima. 

 P. grisea, fronte lined fuscfl., thorace eljtrisque subtilissime 



punctatis. 

 Notonecta cinerea, anelytra. Geoffroy Ins. Par. i. 477- 2. 

 Notonecta minutissima. Fourc. Entom. Paris, i. 220. 2. 



Latr. Gen. Crust, et Ins. iii. 150. 

 Oliv. Encycl. MSth d. viii. 389. 

 Fabr. Ent. Syst. iv. 59- 

 — ■ — Syst. Rliyng. 104. 10. 

 Long. Corp. 1^ lin. 

 Habitat in aquis stagnantibus prope Londinum vulgatissime. 



This species has been considered by GeofFroj,Fabricius, and Oli- 

 vier, as Notonecta minutissima of Linne, which reference undoubt- 

 edly belongs to the following species; viz. to Sigara minutissima. 

 "Whether Notonecta miniitissima o{ FanzcT{F7i. Lis. Ger}7i. In. ii.lA.) 

 be intended for this species, I cannot take upon myself to decide, 

 as his figure indicates a deep notch in the hinder margin of the 

 thorax, which I have not been enabled to detect in any speci- 

 mens ; his figure must therefore be incorrect, or be intended for a 

 distinct species from the one in question. 



Geoffroy has described the larva, never having seen the perfect 

 insect. 



Fam. IL 



Gen. 3. Sigara. 



The characters already given sufficiently distinguish this from 

 the two preceding genera. 



Spec. 1. Sigara minutissima. 

 S. supra cinerea, elytris fusco obsolete maculatis, subtus pedi- 



busque flavis. 



Notonecta 



