AGRIADES CORIDON AND A. ARAGONENSIS. 239 
aragonensis the pale reddish is only found in the summer brood, when 
it is always very pale, its characteristic is to have the anterior and 
posterior wings of the same grey tint, or at most the anterior pale grey, 
and the posterior of a darker grey. The upper surface in coridon 3 is 
‘a beautiful electric-blue, approaching thetis (especially in var. cau- 
casica). Aragonensis is of a more dead and greenish tint. As regards 
all this, I find it very difficult to draw any line between coridon (Knglish) 
and meridionalis. By meridionalis I mean the Riviera form, 2.e., arago- 
nensis minus arragenensts. 
Aragonensis is said to have very often a discal line, coridon never 
- to have it ; this is correct except that in so far that some trace of a discal 
line does occur in coridon, but very rarely, and never in the pronounced 
form it often has in meridionalis. The underside markings differ chiefly 
in the large size and sharp angular form of the marginal black and 
orange chevrons, and the effect of approximating them to the discal 
row, and of the black spots generally being larger and more pronounced 
in aragonensis. This, as Dr. Verity says, is not an absolute distinction, 
as there is much individual variation, but in the mass my material fully 
confirms it as regards meridionalis and coridon. There are, however, 
some non-Rivieran specimens that are not-readily placed, and some 
Hnelish specimens that would not be very easily separated from 
meridionalis. 
My Spanish arragonensis are rather coridon than meridionalis, except 
as to the possession very frequently of a discal line. 
The upper surface is of course very pale, but the difference in this 
point is not so great between meridionalis and coridon, as to make these 
necessarily identical with the former, and the pale underside, small 
spots, and weaker chevrons, all suggest coridon rather than meridionalis. 
The chevrons in hispana and arragonensis are almost alike in size, and 
vary in both from having their basal margins in some flat and rounded 
‘and in other specimens sharply angular. The distance between the 
chevrons and the post-discal row of spots is great, and about equal in 
both forms. In one hispana at least there is a discal line. In both 
forms there is frequently a variation that is very rare elsewhere, viz., 
the row of white arches in the black margins of the forewings, often 
absent or ill-developed in most races, are here completed into white 
circles with black centres. 
So far as the androconia are concerned there is not any very definite 
conclusion to be formed, they vary very much in form and size and 
number of rows of dots in almost every specimen; though I say, very 
much, I nevertheless mean between rather narrow limits, I ought per- 
haps rather to say that most of the various forms seen may be found in 
any specimen. Still examples in coridon, and to some degree in his- 
pana, with the sides rather parallel and the near and distal ends very 
similar, are frequent, whilst in meridionalis and arragonensis the body 
of the scale is rather wider basally and the basal end shorter and 
blunter than the distal, in a certain number of specimens. It is quite 
possible, however, that examination of a larger number of specimens 
would show this amount of distinction not to hold. 
There is, however, one important and interesting fact which Dr. 
Verity notes, that is that the spring and summer forms of aragonensis 
have androconia differing in a manner precisely similar to that which I 
found to occur between the first and second broods of A. thersites. This 
