180 Psyche [Sept.-Dee. 
surprising. The tangle of branches on the bottom of deeper 
parts of the lake made dredging impossible. 
On a return trip to the lake, almost every dead pitcher and 
every open living pitcher was inspected. Cases were found in 
dead pitchers two feet above the high lake level, and in living 
pitchers at all levels. None of the cases contained larvae, a few 
retaining a small number of sclerites. In two dead leaves, one 
remote from the water, one close to it, sets of wings of Ptilo- 
stomis sp. (Phryganeidae; probably postica Wlk.) were found. 
One green pitcher close to the water contained a partially di- 
gested caddis adult Limnephilidae ; (Platy centro pus indicans 
(Wlk.) 9 ), while another green pitcher remote from the water 
contained a freshly dead Ptilostomis postica (Wlk.). The latter 
pitcher, and several other green leaves devoid of caddis cases 
and adults, contained fresh masses of living, partially devel- 
oped, caddis eggs. Judging from the size of the masses and 
their form, they were believed to be limnephilids. 
The cases were small, and of two types, usually not more than 
two cases being found in any one pitcher. Often where two 
occurred, they were unlike in type. The cases were all con- 
structed of laurel and cranberry leaf pieces, many of which fall 
into the water of the pitchers and remain there for a long while 
with little disintegration. The shorter type of case was cylin- 
drical, as much as a centimeter long, and about the same in 
outside diameter. The leaves were arranged with one edge tan- 
gential to the central tube, the leaves or pieces being very nu- 
merous, cemented together by their flat surfaces. The outside 
of this type of case was quite rough due to the irregular shape, 
size and position of the leaves composing it. The longer type 
of case was roughly triangular in cross section, formed of fewer 
pieces of leaf, these with their flat surfaces tangential to the 
central tube. One or more larger pieces of leaf formed the base 
of the case, and to the edges of this base a low peaked roof was 
produced by two sheets of narrower, smaller leaf pieces ce- 
mented together along the three corners. These cases were as 
much as seventeen millimeters in length, eight wide, four high, 
and of rather flimsy construction. Both cases were thought to 
be limnephilid structures, but of species smaller than any found 
dead in the pitchers. The triangular case type might be lepto- 
cerid in origin. Several cases were closed at one end as is com- 
monly done for pupation. 
