COSMOTRICHE POTATORIA. 161 



of two of them are nearly as dark as those of the $ s." Adkin 

 says that, in Sutherlandshire, the coloration of the females is 

 intermediate between the tints considered normal for the two sexes, 

 whilst such intermediate females are noted as occasionally occur- 

 ring at St. Leonard's (Hollis) and elsewhere. Lovett states (E?it., 

 xiv., p. 17) that he bred a 2 from Croydon that nearly 

 approached the colouring of the male, the wings being of a very 

 dark shade, and the general markings resembling the usual 

 decided character of those of the male insect. Mrs. Mathew {I.e., 

 p. 68) bred a ? from Brittany having all the colouring and mark- 

 ings of the male, and Wellman records (/.<:., p. 227) a specimen 

 from Sheffield with the wings of male coloration, but with the 

 antennae and body of the 2 , although the body is not quite so 

 large as that of an ordinary 2 . Christy exhibited (P?ve. Essex 

 Field Club, hi., p. lxxxiii) a female, bred from a Wicken larva, 

 the colouring of which, in many respects, approached that of a 

 male. Ullyett notes 2 s from Folkestone, of the colour of the males, 

 but less red; Barrett, females from Pembroke, in 1876, of a rich 

 dark chocolate-brown, whilst those bred in 1877 were not so dark, 

 but resembled the well-marked forms found in the Norfolk and 

 Cambridge fens. Weir notes a 2 from Lady Cross of the red colour of 

 the $ , with very little of the yellow usually characteristic of the sex ; 

 Fenn observes the occurrence of a 2 with $ coloration at Deal in 1891 ; 

 Gregson, from the Liverpool district, describes {Entom., iv., p. 12) 

 a large 2 with the head and front of thorax dark black-brown, 

 and the whole insect rich ochreous-brown ; Whittle bred a long 

 series from the Southend district in 1897, which showed much colour 

 variation in the 2 s, among others one with slightly flushed forewings, 

 and another with male coloration ; Johnson records a 2 , bred July 

 6th, 1894, at Brighton, as dark as the $ s ; Robson a $ clouded 

 and marked with reddish-brown, exactly like the males, at Hartlepool ; 

 Selys notes females with male coloration as occurring in Belgium ; 

 and Ochsenheimer {Die Schmett., hi., p. 258) observes that the 2 is 

 pale yellow, but sometimes ochreous-brown, and at other times of 

 the same colour as the male. This dark 2 form is Berce's var. A, of 

 which he says : " ? , colour of wings nearly the same tone as 

 that of the male." On the other side, Bowyer states (Eul., xiii., 

 p. 310) that he has a $ with the light colour of the 2 , from 

 Haileybury ; Porritt notes (Enl., xiv., p. 17) that males of the pale 

 yellow colour of the 2 are of rather frequent occurrence in Wicken 

 Fen, and that the majority of 2 s bred from larvae found there 

 are of a much paler and duller yellow than in the ordinary type 

 of the species." Of interesting aberrations in Webb's collection we 

 note: 1. $ , yellow with all the ordinary purplish markings of fore- 

 and hindwings pale slaty-grey. 2. $ s. Two other males almost 

 unicolorous pale buff. 3. 2 , yellow with suffused dark grey 

 outer areas to all four wings. 4. Pale and dark ochreous 2 s 

 uniformly suffused, the former looking quite dirty grey, the latter, 

 brown. 5. 2 > with no transverse lines. 6. 2 s, very small and 

 almost exactly like males in shape. Quedenfeldt notes (Berl. Ent. 

 Zeils., xliv., p. 14) some thirty males bred from Finkenkrug, near 

 Berlin, with a sprinkling of yellow colour, which look very 

 similar to the Amurland specimens. Nolcken states that, in the 



