212 ON THE EXTERNAL MORPHOLOGY OF THE LEPIDOPTEROUS PUPA. 



the eighth abdominal. The raised anterior border of the ventral (anal) part of the tenth abdo- 

 minal (x) is very like that of Papilio and Ornithoptera, and exhibits traces of median division 

 as in certain species of these genera (compare figs. 26 and 27). 



The interpretation of the appearances in this species (N. lucina) presented great difficulty, but I 

 believe that the solution suggested in figs. 31-33 is correct. 



Fig. 34. The Terminal Abdominal Segments of some Rhopalocerous Pupa, probably 



that of Arge galathea. 



Fig. 34. X 14 - 5. The median ventral area of the last three segments of a male pupa. The anus (A) is 

 distinct. The male organ is typical in form and position, except that it is twisted into an 

 oblique direction. The object of the figure is to show the lack of symmetry in this structure 

 in a pupa which was otherwise well formed. The uncertainty as to the species represented is 

 therefore of comparatively small importance. 



