= PHRYGANEID/. 
fringe is dense and black. The anal appendages (figure 34) are 
short. 
DESCRIPTION OF THE Eccs.—The eggs have been found by 
Vorhies, who states: “An egg mass taken from vegetation in the 
water of Lake Wingra on July 21 proved to be of this species. It 
consisted of a cylindrical mass of clear jelly 6 mm. in diameter, in 
which the eggs were imbedded; the ends of this mass were bent 
around and united so as to form a perfect circle, with a diameter 
of 3 cm.” 
Figure 31 represents an egg mass of an undetermined species 
of this genus which was collected in a pond at North Fairhaven, 
New York. 
PHRYGANEA VESTITA. 
Hasitat.—The larve have thus far been found in only two 
localities—Michigan Pond and the pools about the Cornell Bio- 
logical Field Station. In these localities they are not uncommon. 
LarvaL Hasits.—From late summer until early spring the 
larvee spend an active life on submerged vegetation. Rarely they 
are found crawling on the bottom. 
In early spring, when time for pupation draws near, the 
larve seek the protection of some soggy submerged stick or log. 
Into this wood they slowly bore, dragging their cases with them, 
until they are completely beneath the surface—sometimes sev- 
eral inches beneath the surface. The work of boring is accom- 
plished very slowly. The only larva observed during the process 
was found in the Field Station pools. When discovered, this 
larva had bored about one-half inch into a piece of soaked wood. 
The front end of the case was fastened firmly within the hole, 
and the hind end protruded from the surface at right angles. 
From day to day it drew farther into the wood until, at the end of 
a week, only the tip of the case remained protruding. During the 
operation the chunk was left in the pool where found. No dust 
or fragments of wood accumulated about the larva, and it was not 
known whether the waste was torn loose and extruded between the 
larva and its case, or whether it passed through the larva’s ali- 
mentary tract. The larva’s case fit so snugly in the hole that 
nothing could have passed outside it. 
All pupz found were beneath the surface of wood, usually in 
35 
