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JOURNAL OF VARIATION. 



No. 12. Vol. II. 



December 1.5th, 1891. 



^fARIATION. 



Variety of Argynnis agl.\ia. 



This beautiful variety of Argytwis aglaia was captured this year 

 (1891) at Bevendean near Brighton, and exhibited by me at the City 

 of London Entomological Society's meeting of November 19th. The 

 specimen differs essentially from the typical male of this species in 

 the great increase of the size of the black spots, and consequent 

 suppression of the ground colour. It will also be noticed that the 

 sides are slightly asymmetrical, the right pair of wings being much 

 darker than the left. The most important points of variation in the 

 fore-wings, compared with the type, are as follows : — (i). The blending 

 of the second and third costal streaks into a black patch, the excessive 

 development of the discoidal blotch (or fourth streak), and the union 

 of the fifth and sixth streaks into another blotch. (2). The union of 

 the lunular black marks parallel to the hind margin with the parallel 

 row of dots, thus forming a transverse series of black patches. (3). The 

 excessive enlargement of the zigzag series of black marks running down 



