PLATE XLIX 
TYPHA LATIFOLIA 
84, A cat-tail patch in July, showing the large number of fluffy heads which are infested 
with the larvae of Lymnaecia phragmitella. 85, Laboratory cat-tail head on which adults 
of L. phragmitella are resting. 86, Nearly mature head of cat-tail, showing evidence of work 
of young larvae of L. phragmitella and Dicymolomia julianalis 
530 
