LÉPIDOPTÉROLOGIE COMPARÉE 43 I 



in the head, this larva imitated pomonaria except that it was 

 larger. 



Body. This, too, in a most contradictory way, seems to 

 reverse the tendency seen in the last instar. The texture of the 

 skin does not seem so fine. The longitudinal stripes, instead 

 of growing markedly stronger, appear to remain exactly as they 

 were at the end of the last instar and, especially the two medio- 

 dorsal ones, are much fainter than in kelenœ. 



The two spots before the anal plate, which are broad and 

 almost coalesce to form a V in hclenœ, in langei are very like 

 those of pomonaria. The spiracular stripe, whilst definitely 

 approaching that of zonaria, but to a less degree than Jielenœ, 

 seems to exaggerate the yellow spots actually on it and those 

 below it at the expense of the line itself. The spots of both 

 parents are included in this exaggeration so that the yellow spots 

 on the ist Eve abdominal segments are very well developed. 



Ventrally, the larva is very like that of kelenœ. 



3rd INSTAR. 



Length at end : 11,7 mm. 

 Now, the larva seems to hurry forward the zouarïa characte- 

 ristics and once again approaches that species. Even in shape, 

 it is closer to zonaria than is hclenœ. 



Head. The head now is distinctly shaped likc that of zouarïa. 

 It is blackish in colour, marbled with paler markings. 



Body. The body is slightly stouter and considerably darker 

 than in helenœ, although this is due to a development, slightly 

 more marked in this form, of the suff usions after the yellow bars. 

 The longitudinal lines of both are nearly alike and so are the 

 fairly well marked collars. The arrangement of the yellow 

 spotting, too, is not greatly différent in the two, although, in 

 langei, the original transverse bars are somewhat broader. The 

 two warts appear on the eighth abdominal segment. The spira- 

 cular stripe becomes very zonaria like and is almost primrose 



