LÉPIDOPTÉROLOGIE COMPAREE 459 



SECONDARY HYBRIDS 



Hybrids between " Pœcilopsis pomonaria " and " Lycia hybr. pilzii. " 



Pœcïlopsis pomonaria cf x Lycia hybr. pilzii Q = hybr. brooksi. 



In the course of very many attempts to cross thèse forms, about 

 a hundred pairings were obtained. The female pilzii proceeded 

 to lay their ova m the usual manner and did so quite freely. In 

 one batch alone did the larva; hatch, and then only to the number 

 of 14. AU of thèse, however, took readily to their food, which 

 was hawthorn, and fed up well. 



Their habits in ail respects were the same as those of larvae 

 of hunii. Three of them were accidentally killed, but the 

 remainder proved very healthy and pupated safely. In feeduig 

 up they lagged a little behind kunii and pilzii. 



Description of larva. 



As the larvae in their younger stages varied but little from 

 those of hunii, no description was made until the last instar, when 

 direct comparison was made between full grown larvae of the 

 two forms. 



With the exception of a slightly greater development of the 

 black spotting, the heads of the two larvée were exactly the same. 



The ground colour of the body is slate, more or less blackish 

 suftused. In shape, the body is exactly the same as pomonaria. 

 The longitudinal stripes are aJl présent; the edgnig is irregular 

 and much less clear than in hunii. Although the shapes of the 

 stripes are practically the same in the two forms, they are a little 

 broader in the présent form, and the hlling in is paler. As the 

 stripes in the two tend to break at the same places, this makes 

 them in brooksi, much less parallel edged, especially on the last 



