﻿50 LÉPIDOPTÉROLOGIE COMPARÉE 



I thought I had got Lycidas since Astragalus exscapjis was 

 abundant at the spot where they occurred and was no doubt 

 their food-plant. 



Thèse spécimens from Pfynwald, those I hâve from Locarno 

 (and Reazzino), from the Lago di Garda, from Bex, and one 

 from Lugano (Monte Bré), ail agrée in having very pale under- 

 sides in some almost white, in having borders white or almost 

 white to the hind-wings, pale but certainly not white, to the 

 fore-wings, thèse spécimens are ail Argus, and seem to be abso- 

 lutely the same as the forrns shown in (both) Courvoisier's 

 figures, except that the artist has given a white border both to 

 the fore-wings and to the hind. That this is a vagary of the 

 artist (or lithographer) there can be little doubt, as the whole 

 plate is of very inferior character, and in his descriptions Cour- 

 voisier refers to the white area inside the marginal spots in the 

 case of var. Nivea (Pfynwald) only, but in neither to one out- 

 side it. 



There is however one very curious point, and if there is any- 

 thing in it, it makes ail that I hâve above said and what any 

 one else, so far as I know, has said, quite beside the point, and 

 that is that the figure is really very like Aegon, and the point 

 I hâve just referred to, is, that the third spot of the basai séries, 

 is out of alignment with the others in a way that is fréquent, 

 though not perhaps normal in Aegon, but is much rarer in Argus. 

 The conclusion is that if it be Aegon, then Aegon and Arg7is 

 hâve in this région forms that are closely alike, and unlike their 

 more typical aspects, if it be Argus, it is Argus and not Aegus. 



The position of the aberrant spot may be due to an error of 

 the draughtsman or it may be correctly delineated, but this does 

 not alter the conclusion that the figure, whatever it is, is not 

 Aeg74S. What it is can only be determined by an examination 

 of the appendages. 



The figures of Argus in the 20th Livraison of the Etudes viz. 

 Figures 52 to 58, and Callïopis, 64 and 65, belong to the Argus 

 and not to the Aegus section. 



