PHRYGANEA. 
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body^ creeping along the bottom of the waters 
they inhabit by means of six short and slender 
legs: on the upper part of the back, in most 
species, is situated an upright papilla or process, 
serving as a kind of prop or stay, preventing the 
case or tube from slipping too forwards during 
the time the animal is feeding. 
Of the European Pliryganem one of the largest 
is the Fhryganea grandis of Linnaeus, usually 
measuring somewhat more than an inch in length, 
and having very much the general aspect of a 
phalaena: the upper wings are grey, marked by 
various darker and lighter streaks and specks, and 
the under wings yellowish brown and semitrans- 
parent. The larva, which measures near an 
inch and three quarters in length, is of a flesh- 
coloured grey, with brown head and legs, and 
inhabits a tube composed of pieces of bark, small 
fragments of grass-stalks, or other substances. 
Like other larvas of this genus, it is knowui by 
the name of Cadew-Worm, and is frequently 
used by anglers as a bait. When arrived at 
full growth it fastens the case or tube by seve- 
ral silken filaments to the stem of some water 
plant or other convenient substance in such a 
manner as to project a little above the surface 
of the water, and casting its skin, changes to a 
chrysalis of a lengthened shape, and displaying 
the immature limbs of the future Phryganea, which 
in the space of about fourteen days emerges from 
its confinement. 
Phryganea rhomhica is a smaller species than 
