128 THE ENTOMOLOGIST. 



collections, or that, so far as I know exists in them, is a very 

 fine specimen which was taken in the New Forest some years ago 

 by E. Morris, and sold by him to the late Mr. T. Maddison ; it is 

 now in the collection of Mr, P. M. Bright. 



There is one noticeable feature in all the ab, degenerana 

 hailing from Continental Europe that I have seen, and that is, 

 that they are much larger than any other form of the species, 

 and this peculiarity applies equally to Morris's specimen, which 

 in general characters closely resembles some examples from 

 Germany which are in the National Collection. 



ab. rosea, n. ab. (PL I, fig. 21.) 

 Sy7ionymy, — Barrett, Brit. Lep. pi. ccli, fig. 3 (1900). 



Description. — The ground-colour of the superiors is a rosy 

 reddish-brown ; this colour is most prominent in the central 

 transverse fascia ; the usual transverse, thick wavy lines are 

 very j)rominent, and the insect has a very distinct variegated 

 appearance. The head, thorax, palpi and antennte are of the 

 same rosy tint as the wings. 



Apart from the ground-colour of the superiors ab. rosea 

 closely resembles ab. alhimaculata. 



I regard this as the nearest approach the British forms are 

 able to make to the true ab. degenerana ; one of my examples, 

 which has a silver-grey ground-colour, I regard as intermediate 

 between the two forms. It is common in the New Forest, but I 

 have not seen it from elsewhere. 



The following aberration was described from non-British 

 specimens, and, so far as is known, it has not been found in the 

 British Islands : 



ab. russiana, Dup. 



Synonymy. — Bussiana, Duponchel, Hist. Nat. Lep. vi, p. 556, 

 and pi. cclxv, fig. 3 (1828) ; Staudinger, Cat. Lep. d'Eur.p. 22 (1861), 

 p. 50 (1871) ; Staudinger, Cat. Pal. Lep. i, p. 361 (1901) ; Favre, Mac. 

 Lep. de Valais, p. 78 (1899) ; Hofmann, Eur. Schmett. ii, p. 124 

 (1908). 



Original description. — '* Var. de revayana. Les premieres ailes 

 sont en-dessus d'un vert d'eau tres pale ou d'un blanc-verdatre, 

 avec, un grand nombre d'ondulations grises sur toute leur surface, 

 et un raie longitudinale d'un noir brun, qui part de la base et 

 s'etend un peu au dela du milieu de I'aile, ou elle se divise en deux 

 branches qui s'inclinent vers i'angle anal. A I'extremite de cette 

 raie, est place un gros point noir, sous lequel on aper9oit une 

 tache reniforme grise." " Eussie Meridionale." 



Favre ('Mac. Lep. du Valais,' p. 78) says: "Very rare with the 

 type at FoUeterres, near Branson, amongst oak." 



