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 

 aquaticaj, and the sedge ( Car ex divisaj. 



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. 



NONAGRIA HELLMANNI. 

 Plate XLV. 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. 



