36 THE ENTOMOLOGIST. 



taken place. If this is so, it may account for some of the females, 

 both oi piiziloi &nd japonica, being without this appendage. 



Eecorded from Yesso and the Kurile Islands. There were 

 several specimens in Fryer's collection, which has lately come 

 into my possession. These were taken at Gifu in April, and 

 are probably the examples referred to (E, M. M. xxiv. 66). I 

 also have one example which was taken by my native collector 

 at Bungo, Isle of Kiushiu. 



Luehdorfia piiziloi has been recorded from Eastern Siberia, 

 Vladiwostok, and Isle of Askold. 



Explanation of Plate I. 



LueJidorfia japonica, Leech. — Fig. 1, J. Fig. la, J, under siu'face ; 

 fig. 1 &, ? , poueh, full view ; fig. 1 c, J , pouch, side view. 



Luehdorfia piiziloi, Erschoff. — Fig. 2, $ . Fig. 2 a, $ , under surface ; 

 fig. 2 6,$, pouch, full view ; fig. 2c,?, pouch, side view. 



ON THE VARIATION OF INSECTS. 



By T. D. a. Cockerell. 



(Continued from p. 6.) 



h. Tlie so-called hermaphrodites. 



Colias edusa, Entom. xi. 101. Lyccena icarus, Entom. xi. 101, 

 209 ; XX. 302. L. cegon, Entom. xi. 101. Clostera curtula, 

 Entom. xi. 103. Epione vespertaria, Entom. xi. 104. Satyrus 

 semele, Newman, Brit. Butt. 89. Odonestis potatoria, Entom. 

 xvi. 188.^ Lasiocampa trifolii, Ent. Mo. Mag. 1882, iii. Antho- 

 charis cardamines, Entom. xii. 181 (<?). — In these examples part 

 of the insect has tlie superficial characters of the male, and part 

 of the female, in a similar manner to the forms quoted under 

 "g."' That they are not true hermaphrodites is clear enough, and 

 it is higlilj' probable from analog}^ that the primary sexual organs 

 are aborted, though I am not at present aware of any positive 

 evidence that this is the case. Having in view the fact that in 

 cases of female dimorphism specimens combining the two forms 

 may occur, and further, that the secondary sexual characters of 

 female Lepidoptera have probably arisen in dimorphisms (see 

 under "f"), it seems possible that these examples are cases of 

 partial reversion, tokens that the female was once dimorphic. 



i. One sex assuming the superficial characters of the other. 



Biston hirtaria, ^ , with 5 colouring, Entom. xi. 102. Epione 

 vespertaria, S, with ? colouring, Entom. xi. 170, and coloured 

 fig. Colias edusa 2^seudomas, ? without yellow spots on black 

 marginal bands, Entom. xi. Epinephele ianira pseudomas, 

 Newman, Brit. Butt. 92. Aphycus ceroplastis pseudomas. 



