256 NATURAL HISTORY OF AQUATIC INSECTS CH. 



FIG. 82. Cases of various Caddis-worms, i. Phryganea gr.mdis : 2, Limnophilus 

 rhombicus ; 3, 4, 5, L. flavicornis ; 6, L. pellucidus ; 7, Anabolia nervosa ; 8, 

 Limnophilus lunatus ; 9, Stenophylax nigricornis (larval case) ; 10, do. (pupal 

 case); n, Hydroptila MacLachlani ; 12, 13, Molanna angustata ; 14, Serico- 

 stoma ; 15, S. pedemontanum, anterior closing membrane; 16, posterior ditto; 

 17, Micropterna nycterobia, posterior ditto. 1-8, and 14 are from MacLachlan, 

 fi. G0ssi/>, 1868, the rest from Klapalek. 



