JHRYGANEA. 479 



The precautions of thefe aquatic larvae, in fecuring 

 themfelves in thefe retreats, are alfo neceflary to prote£t 

 tliem from fifhcs, who are very greedy of them. Some 

 of the phryganeae of flagnated water, fuch as lakes and 

 ponds, cut the water lentil in regular fquares, from 

 ■which they conftruft their edifices. The common trout 

 is one of their greateft enemies ; and many other fifhes 

 covet them fo eagerly, that, when flripped of their cruft, 

 they make excellent bait. 



The phryganea bicauda of Limu^us frequents equally 

 the banks of rivers and of ftanding pools ; the wings arc 

 a third longer than the body, narrow at the top, and 

 broad below, and reticulated with brown veins ; the co- 

 lour of this infeiH: is a dark brown, with a fingle longi- 

 tudinal ftreak pafling acrofs the head and thorax ; the an- 

 tennae are long, filiform, and of the fame colour with the 

 legs and body * ; the appendices of the tail are of equal 

 length with the antennae. 



The phryganea faltatria is one of the fmalleft fpccies of 

 this genus ; the wings are decorated each with a green 

 and white fpot f ; the antennse are longer than the body ; 

 and when examined with a microfcope, appear velvetcd ; 

 the wings are of a bright colour ; the fmall veins by 

 which they are reticulated being white at the bafe, and 

 blackening towards their extremity J. 



* Barbut's Gen. Iiifedt. p. 216. f Fauna Swecica, phrygan. fpec. tl* 

 \ Rcgnc Animale, Tome U. p. XI 7. 



