into two Classes. clxxxv 



I now proceed to a more detailed account of the contents of the 

 new classes : the divisions are so perfectly natural, that naturalists are 

 already agreed on them, with a single exception ; and they may be 

 briefly expressed by the following formula. 



Divisions of NEUROPTERA. 



Larva and pupa aquatic, carnivorous : — 

 Wings when at rest erect, meeting verti- 

 cally over the back : — 

 dissimilar, fore-wings large, hind wings 



small: tarsi 5-jointed Ephemerina, Newm. 



alike: tarsi 3-jointed Agrionina, Newm. 



Wings when at rest porrected horizontally: 



tarsi 3-jointed Libellulina, Newm. 



Wings lying flat on the back : tarsi 3- 



jointed Perlina, Newm. 



Larva and pupa terrestrial or arboreal, omni- 

 vorous or phytophagous : — 

 Wings lying flat on the back, alike, reticu- 

 lated : tarsi 4-jointed Termetina, Newm. 



Wings deflected over the abdomen, dissi- 

 milar; fore wings large, hind wings 



small : tarsi 3-jointed Psocina, Newm. 



Wings lying flat on the back, alike, frin- 

 ged, without veins : tarsi 2-jointed... Thripsina, Newm. 



Divisions of STEGOPTERA. 

 (Tarsi uniformly h-jointed). 



Larva subcortical or arboreal, supposed to be 

 phytophagous : — 



Mouth prolonged into a beak Panorpina, Newm. 



Mouth of ordinary form : — 



Fore-legs simple Raphidiina, Newm. 



Fore-legs raptorial Mantispina, Newm. 



Larva aquatic, supposed to be phytophagous : — 



living in a case Phryganeina, Newm. 



naked, natatory Corydalina, MacL. 



Larva terrestrial, insectivorous : — 



digging pitfalls for its prey Myrmeleonina, M'L. 



living on leaves and feeding on Aphides Hemerobiina,M«cZ. 



