89 
The date of the appearance of the caterpillar is in 
May and June. 
It feeds in the stems of the reed meadow-grass (Poa 
aquatica ), and the sedge (Carex divisa). 
The chrysalis is found in the stem of the plant on 
which the caterpillar has fed 
NONAGRIA CONCOLOR. 
Plate XLV. Figure 2. 
Localities for this species are Folkestone, Worcester, 
Whittlesea Mere, and the Fens of Cambridgeshire. 
The situations where it is found are marshy places 
and fens. 
The perfect insect appears in June. 
The chrysalis is found within the stem of the plant 
on which the caterpillar has fed. 
UONAGRIA HELLMANNI. 
Plate XLY. Figure 3. 
Localities for this species are Yaxley Fen and Whittle¬ 
sea Mere. 
The situations where it is found are fenny districts. 
The perfect insect appears in June. 
VOL. II. 
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