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Genus XLVIII. PHRYGANEA. 



GENERIC CHARACTER. 



Antenna setaceous, longer than the thorax. 

 Mouth without teeth, but furnished with a 

 horny, short, arched, acute mandible. Palpi 

 four. Stemmata three. Wings incumbent, 

 or laid horizontally on the body, the hinder 

 ones folded. 



General Observations. 

 This genus is divided into two sections : 



1. With two setae or threads in the tail. 

 £. With the abdomen simple, or without 

 setae. 



The larvae of the Phryganeae live in fresh 

 water ; they are of a lengthened shape, with 

 six legs and a ringed body, and inhabit tubu- 

 lar cases, formed by themselves of pieces of 

 wood, shells, particles of sand, 8cc. These cases, 

 though rough without, are smooth within, be- 

 ing lined by the insect throughout with silk. 

 There is one species in particular deserving of 



