50 THE ENTOMOLOGIST, 



by Mr. P. H. Cooper, near Dover, about the middle of July, last 

 year ; the aberration is perfectly parallel on the upper side to 

 that of Argynnis Adippe described above, even to the conspicuous 

 red sj)ot towards the base of the primaries. 



Figs. 2 and 2 a, Plate I. In this aberration of Argynnis 

 Aglaia (female) the melanism is almost confined to the upper side 

 of the secondaries, but the under side of the same wings show — as 

 in Argynnis Adippe, described above — an absence of silvery spots 

 in the middle and margin of the wdngs, and at the base the siDots 

 become confluent in a silvery patch. The specimen was cai)tured 

 last year in the New Forest by Mr. Ashmede. I do not feel quite 

 certain that the insect is not a hybrid between Argynnis Aglaia 

 and Argynnis Adippe ; the red spots on the under side of the 

 secondaries are very much more apparent than usual in the 

 former species. 



Figs. 4 and 4 a, Plate I., represent the upper and under side 

 of a partially-melanic aberration of Argynnis Paphia, captured by 

 Mr. W. J. Argent in the New Forest, on the 12th of July, last year 

 (see p. 52), in company with another similarly but not so strongly 

 marked. In this specimen the partial melanism of all the wings 

 is correlated with the obliteration of the silvery markings on the 

 under side of the secondaries, except a pearly patch at the base 

 of the wings, precisely as described above in the cases of Argynnis 

 Adippe and Argynnis Aglaia. I am not able to offer an expla- 

 nation of this singular correlation. 



Fig. 3, Plate I. For some few years past there have been 

 captured each season in the New Forest specimens of Argynnis 

 Paphia (male) with a nearly white spot on each wing; that 

 figured from the cabinet of Mr. Carrington was taken last year ; 

 I have taken four myself in 1879 and 1880, and in the same 

 locality captured a similar aberration of Argynnis Euphrosyne. 

 I feel quite unable to suggest any explanation of this singular 

 aberration. 



Figs. 5 and 6 a, Plate I., represent a specimen of Argynnis 

 Paphia, both hermaphrodite and dimorphic, captured by Mr. 

 Bernard Cooper in the New Forest on the 12th of July, last year; 

 the left side is the normal form of the species in the male sex, 

 and the right side is that of the dimorphic female coloration of 

 the variety Valezina. 



Whether there is any advantage to Nature derived from the 



