14 Dr. Luacn’s Classification of the Notonectides. 
Spec. 1. Plea minutissima. 
P. grisea, fronte lined fuscá, thorace elytrisque 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. Méth d. viii. 389. 
Fabr. Ent. Syst. iv. 59. 
Syst. Rhyng. 104. 10. 
Long. Corp. 14 lin. 
Habitat in aquis stagnantibus prope Londinum vulgatissime. 
This species has been considered by Geoffroy, Fabricius, and Oli- 
vier, as Notonecta minutissima of Linné, whicl reference undoubt- 
to the following “species ; 1 viz. to Sigara minutissima. 
“Whether Notónecta minutissima of Panzer (Fn. Ins. Germ. In.ii.14. ) 
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. Ir. 
Gen..3. SicARA. 
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 
