( xxiii ) 



to HeiT Th. Becker in Silesia, in the hope that the species 

 would have received ere now a distinctive name. 



jNIr. L. B. Prout exhibited three male specimens of Proutia 

 hetidma, Z., and two of P. epjniKjella, Tutt, bred from larvse. 

 taken this season in Epping Forest. He remarked that both 

 species occurred in the same part of the forest, and the larva? 

 appeared to be attached chiefly to old hawthorns. Excepting 

 in the smaller size of P. eppingella, no superficial difference 

 was observable between the two species. The specimens of 

 P. betidina, however, emerged about ten days earlier, the dates 

 being July 5th, 8th and 9th, while P. eppingeJki appeared 

 between July 14th and 21st. 



Dr. Chapman said that, accepting provisionally ]Mr. Tutt's 

 name of ejjpingella for the last species, as a way of avoiding 

 the difficulty of determining whether it be the salicohlla of 

 Bruand or his anicanella, which seems more probable, or a 

 distinct species, he might call attention to the fact that he 

 knew of no other British males of the species, except one 

 previously bred by Mr. Prout and one of unknown locality in 

 Dr. Mason's collection. It is at once distinguishable from 

 P. het'i'lwa by the numerous joints to the antenna? (27 instead 

 of 21-24, 24 instead of 18-21, if only the joints visible by 

 their pectination outside the head clothing be counted), which 

 are nevertheless shorter, and by the shortness of the anterior 

 tibiae ("21 mm. instead of -29 mm.), as well as by the less difficult 

 characters of the colour, size, foi-m of wing, etc. 



Dr. Chapman said that Mr. Merrifield had called attention 

 at a recent meeting of the society to the difference in the 

 wing markings in the pupa and in the iniago of Ajwria cratpegi^ 

 and exhibited some specimens of considerable interest in I'e- 

 lation to the question of correspondence or otherwise of pupal 

 and imaginal wings, viz. the imaginal wings of Aporia 

 cratsegi removed from the pupa at a certain stage of their 

 development. 



The specimens showed that at this particular stage the ima- 

 ginal wings presented the markings of the pupal wing, a set 

 of markings which are in a way the reverse of those of the 

 matui'e imago. The specimens also showed that this stage was 

 one when the imaginal w'ing was still so immature that it was 



