308 Explanation of Plates. 



No. 2 cJ is a variety of upperside by paleness towards wing 

 margins, and prominence of veins between pale patches. These 

 four specimens are now in B. M., South Kensington. 



Plate LII. Fig. 1 shows the pocket in A. ihersites as well as 

 the one opposite its apex in the following incision, the lateral folds 

 of the membrane, in both incisions, happen to be folded upwards, 

 which demonstrates that they are free from the pupal wall both 

 above and below them. They may be compared with Fig. 2, which 

 shows the same folds in the pupa of A. bellargus {ihetis). The 

 pocket in this specimen hapi^ens to be folded upwards and not 

 well in focus; the lateral folds and those of the following incisions 

 are well seen, x 25. 



Plate LIII is a view of this portion of the pupa of A. ther sites 

 from the inner surface taken stereoscopically, and so viewed shows 

 these structures very clearly. I have numbered the abdominal 

 segments, and have placed a letter (a) pointing to the pupal mem- 

 brane lining the inner wing surface, which might puzzle one not 

 used to these pupal details. 



Though the greater width of these folds in one position than in 

 another, suggests that it must be so, actual observation shows that 

 the opening of the incisions, which occurs on the dorsum of the pupa, 

 already referred to, does not occur ventrally, and that these folds 

 are in no way related to such extension of the segments at dehiscence. 



