196 THE ENTOMOLOGIST. 



by Edwards in the work above referred to, — Lyccena, ii., fig. 19, 

 vol. ii. 



It thus appears that the female of the spring emergence of 

 L. argiolus in England resembles that of one of the varieties of 

 L. pseudargiolus, which appears at that time of the year in 

 America ; and in a similar manner the second-generation female 

 is exceedingly like one of the varieties of the American species, 

 which appears later in the year as a second generation. 



The parallel between the two species does not end in these 

 resemblances only. In Edwards' 'Butterflies of North America,' 

 second series, a form of the female of L. pseudargiolus is figured, 

 — Lyccena, plate ii., fig. 9. In this beautiful insect the blue gives 

 place on the upper side of the wings to a lovely silvery colour, 

 somewhat like that of L. corydon ; the black edging on the costa 

 and hind margin of the fore wings is very broad, and the discoidal 

 spot is much more marked than in the blue form. This variety 

 was also figured, but without the discoidal spot, in the first 

 volume of the ' Butterflies of North America,' — Lyccena, plate ii., 

 fig. 3, — as L. pseudargiolus, and a similarly coloured insect as 

 L. neglecta, fig. 6, unaccompanied by any figure of the blue form. 

 I have taken an insect, coloured exactly in every respect like 

 that figured by Edwards in the second series, at Brenchley in 

 Kent, in summer, and was struck with the strong resemblance it 

 bore to the butterflies figured in the first volume, above adverted 

 to ; the only difference being the presence of the discoidal spot 

 in the Kentish specimen. I may remark that Edwards does not 

 figure a male of this silvery colour, so that it is probable the 

 insect is dimorphic in the female sex only. 



I have received specimens of the American insect from 

 Mr. Walter Haydon, who captured them at Moose, lat. 51°. It 

 is there double-brooded ; the females exhibit the horeomorphic 

 variation, and are apparently L. lucia, Kirby. Mr. Haydon 

 found the species on the wing from June to September. 



Specimens of the Eussian female L. argiolus, received from 

 the late Mr. Field, of St. Petersburg, are exceedingly dark 

 both on the fore and hind wings on the upper side ; the discoidal 

 spot, absent in the American L. lucia, is well defined in these 

 northern specimens ; the fore wings have but little blue, and the 

 hind wings are merely shot with that colour. They most nearly 

 resemble the American L. cinerea of Edwards, ' North American 



