128 THE entomologist's record. 



the British list. Its nearness to L. aei/oii is so remarkahle, that one 

 would not be surprised to hear that a large number of the specimens 

 going under the latter name in our collections were, in reality, the 

 allied species. A slightly bluer tint, a less pronoimced dark margin, 

 narrower fringes, the absence of the small spines on the front tibiae, 

 and the slightly straighter row of black spots just outside the central 

 spot on the underside of the hind-wings are all characters so slight, that 

 it is not surprising that the best of lepidopterists express their 

 inability to separate the species with any degree of certainty. "When we 

 add that Anglia is the only country in Europe in which L. an/ux 

 does not occur, we need scarcely be surprised that Staudinger, in his 

 <'at(il<i(/uc, p. 10, questions his own record that L. an/us does not occur 

 in this country. 



When, therefore, I captured a long series of a fjj/caoia in West- 

 moreland, the males of which Avere distinctly bluer, the dark margin 

 comparatively narrower, and the females all shot most exquisitely 

 with the male coloration, I had doubt whether L. an/u.s had not 

 come into my possession. 



This has ultimately proved not to be so, but still the possibility of 

 the species occurring in this country is so great that it is perhaps a 

 sufficient excuse for the above notes. 



The males which I have captured vary in colour from those having a 

 distinct rt'v/''» tint (with just a trace of red in it), to the blue which charac- 

 terises a )yus. The dark marginal border is narrow, and in some specimens 

 restricted to a fine line, with dark nervures showing on the outside of 

 the wing. The hind-wings in all the specimens present a more or less 

 complete row of marginal black dots, separated by the fine black 

 nervures, and, in some specimens, edged externally with paler 

 — one specimen shows a pale coloration along the costa, and at 

 the upper part of the outer margin of the hind-wing. The undersides 

 of the fore-wings of the males may be described as pale grey with blue 

 bases, with but little orange on the marginal border, and with slight 

 variation in the size of the spots forming the transverse angulated 

 row crossing the fore-wings. The hind-wings are characterised by a 

 white band between the marginal row of orange spots and the trans- 

 verse row of black spots, the latter of which in the antepenultimate 

 spot shows some tendency to vary, in some specimens being much 

 higher, in others more in a line with the remainder. 



The upper side of the females is most remarkable, the fore-wings 

 being blue at the base, the colour extending to the centre of the wing, and 

 reappearing again as a transverse shade reaching from the costa to the 

 inner margin, leaving the broad brown outer marginal band, which 

 is so characteristic of the maleL. aei/on. Faint traces of orange spots 

 are sometimes present in this outer marginal band. The hind- wings 

 are shaded entirely with blue, which is of two tints, as in the males, 

 the more purple at'j/oji tint and the bhxer arj/Hs tint, the latter very 

 bright and characteristic ; a series of marginal spots is present in all 

 the specimens, but the quantity of orange present is distinctly limited. 



The undersides of the hind-wings of the females are characterised 

 by the distinct white band which traverses all the wings between the 

 orange marginal band and the transverse rows of black spots, and also 

 by the strong development of the silver studs in the orange bands. 

 There is also some variation in the transverse band of spots on the 



