LEPIDOPTERA. 



275 



belly dark -green. Length 12 mm. Viewed with a lens, the colour 

 very much resembles a healthy young ash stem. 



Pupa dark - brown in fore part, and latter part of a very light 

 greyish-yellow, enclosed in silken threads. 



As regards the life-history of this species, I find there is a great 

 difference between the account given by Judeich and Nitsche, as seen 

 from fig. 263, and what I have found in Northumberland, inasmuch 

 as the species is double-brooded in Germany, and only a single gener- 





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Fig. 2(53 Prays curtisellus. 

 a, moth ; 6, bud injured in autumn by young larva ; c, the young larva has left the bud in 

 spring and spun a protection for itself; d and e, the young shoots destroyed by spring 

 larva; /, g, and h, leaves eaten by summer larva; i.e., larva? of second brood. Copied 

 from Judeich and Nitsche. 



ation in a year in the north of England. It is, however, possible that 

 the species may be double-brooded in the south of England, and it 

 will be well, therefore, for students in forest entomology to verify 

 this. Hence the illustration from Nitsche may be very helpful. In 

 the accompanying illustration it will be seen that the spring brood 

 destroys the leading shoots and the leaf-stalks, as seen in d and e. 

 The larvae of the second brood eat the leaves, as seen in /, g, and h, 

 and then deposit eggs in the leading buds. 



"With regard to remedies, it is scarcely possible to do anything 

 except collect the larvae when they are feeding in the leaf-stalks. 



