AGKIADES CORIDON. 31 



blue, the distribution of colour in this latter case, resembling that of 

 dark forms of Celastrina argiolus. Stephens' insect, therefore, is to 

 be considered an example of calaethis-albiciiicta. 



f. ab. semibrunnea, Mill., " Icon.," p. 84, pi. iv. {red. viii.), fig. 3 

 (1859). — Semibrunnea, which is a ? , appears to me to be new, no author to my 

 knowledge has yet mentioned it. This aberration falls midway between the 

 typical 2 and the ab. mariscolore of authors. In size, semibruimea is as large as 

 the largest 2 s of corydon. Above, the silvery-blue instead of covering the wings 

 almost entirely as in the ab. mentioned, leaves large brown spaces. The fringe is 

 preceded by a brown margin in which the terminal dots appear faintly. The 

 discoidal lunule of the forewings black, small, and resting on a ground of silvery- 

 blue ; that of the hindwing is bluish, striking in appearance on the brown ground 

 colour. Beneath, the wings are typical, unless it be that the fulvous of the 

 marginal chevrons is very pale. This rare aberration, which is in my cabinet, 

 came from la Pape, a locality situated to the north-east of Lyon (Milliere). 



This is a remarkable aberration of A. coridon, the figure depicting a 

 form in which the nervures of the hindwings are whitish (the descrip- 

 tion says _" silvery- blue "), and the interneural spaces between the 

 marginal area and discoidal on both wings similarly scaled, with extra 

 pale scaling along the inner margin of both wings and the base of 

 hindwings ; the central and basal area of the forewings, and the centre 

 ot the hindwings brown. The discoidal of the forewings ringed with 

 white. It is really, therefore, exceedingly different from our semisyn- 

 fjrapha, which has the hindwings scaled with blue from base to margin, 

 and the forewings with blue from base to discoidal, rarely beyond. 

 Chapman notes that the arrangement of the light and dark parts in 

 Milliere's figure has a very curious effect. It would appear from the 

 descriptions that this is a blue form somewiiat similar to that of 

 rudiosa, Gaschet, both having blue nervures, the main differences 

 apparently being that it is less blue just before the margin of the 

 hindwings, and combines with the characters of radiosa that of our 

 caeruleopuncta. Wheeler, Bartel, Eebel, Seitz, and others, refer this 

 to our semuync/rapha ; it is most unfortunate that the original figures 

 and descriptions have not been more carefully studied. De Eougemont 

 cites (Cat., p. 22) it for Neuchatel, Agassiz for the Bernese Jura, 

 Warburg notes it from Cannes. 



7]. ab. rudiosa, Gaschet, "Bull. Soc. Ent. Fr.," ser. 5, vii., p. lxiv (1877). 

 Corydon var., Sladen, "Ent.," xxxv., p. 274 (1902). — As the description of L. 

 adoni* ab. radiata* (op. cit. p. 63) applies exactly to tbis 2 form of corydon, I 

 consider it useless to reproduce it. The only differences are — (1) the blue of the 

 nervures is darker ; (2) the interneural spaces are not of a deep blue but black. 

 The striking similarity that exists between the aberrations of these two species 

 should be noticed, and I feel I cannot do better than give them the same name 

 in a different form. From Charente-Inferieure — St. Georges near Koyan. Less 

 rare than radiata, without being frequent (Gaschet). 



This is a blue form of the 2 , in which the blue is restricted to the 

 nervures, and has the appearance of radiate lines uniting on the outer 

 margin of the hindwings, and strengthened by the blue lunules sur- 

 mounting the orange chevrons. [South's drawing [Ent., xx., pi. i., 



* Lycaena adonis ab. radiata, 2 . The nervures of the hindwings of a 

 brilliant azure blue, the interneural spaces of a deep blue, encroaching on the 

 black, and radiating in the direction of the outer margin ; just before the marginal 

 spots the dark tint is effaced and the azure blue alone remains. The black 

 marginal spots are adorned with fulvous lunules, as in the ab. ceronus. The fore- 

 wings show the same characteristics as the hindwings, but less strikingly ; the 

 tints are a little deeper (Gaschet). 



