PHRYGANEID&. 
24. 
Zo 
26. 
27. 
28. 
20. 
30. 
Vorhies speaks only of Elodea as food of the larve. No Elodea 
occurs in some of the situations of our region where the species is 
common. Probably Vorhies would have found his specimens feed- 
ing as readily on the leaves of other plants if opportunity had of- 
fered. 
PHRYGANEA INTERRUPTA. 
Head and thorax. 
Lower mouthparts. 
Front leg. 
Caudal end of abdo- 
men, dorsal. 
Labrum. 
Middle leg. 
Hind leg. 
1. Egg mass. 
. Case of pupa. 
3. Larva. Distribution of gills. 
. Pupa. Caudal end of abdomen, 
ventral side. 
. Larva. Labrum. 
. Larva. Frons. 
. Pupa. Mandible, lateral view. 
