80 



Duvau thus obtained eleven generations in seven months, and 

 Kyber even observed that a colony of Aphis Dianthi, brought into 

 a constantly heated room, continued to propagate for four years, 

 with a single impregnation of a female by a male, the young being 

 constantly produced of the female sex. The males, of which 

 some are winged, and others apterous in the same society, are 

 not born until the end of the summer or autumn. They fecundate 

 the last generation, produced by the previously born specimens, 

 consisting of wingless females, which then deposit fecundated eggs, 

 which remain through the winter and produce young in the spring 

 capable of reproduction without fresh impregnation." 



It is fortunate for owners of orchards that the Carpocapsa has 

 not the same powers of reproduction as the Aphidie. Westwood 

 quotes from the Entomological iVfaf/a.rme that " troops of Aphides 

 were found in the pips of large sound codling apples." Hop- 

 growers are, I suspect, the chief sufferers in the colony from this 

 tribe of insects, and they may f)robably gain some useful infor- 

 mation from the Portugal report when published, though I believe 

 the Aphis Humuli or hop-aphis attacks the leaves and young 

 shoots, whereas the Phylloxera attacks the roots, and therefore the 

 method pursued for the destruction of the latter may not be suitable 

 for the former. 



I shall be much obliged by any one kindly sending me some of 

 the pupae of the Carpocapsa, or of any other similar insects. These 

 I will endeavour to bring to the imago state, and properly mount 

 for the Museum. It will be best to send the small pieces of bark 

 to which they may be attached, or at any rate to send the whole 

 cocoon, which may be placed in a matchbox with some cotton-wool. 



