Entomology in N.W. Spain. 157 
rather wider. The alignment of the ocelli of the middle row 
is as described by Rambur; on the fore-wing, the three 
between veins 3 and 6 are nearly in line instead of in 
a curve as in astrarche and the 1 (or 2) above seem unduly 
moved basally. I have one or two $ specimens in which 
traces of orange spots are seen on upper-side of fore-wings, 
and several with considerable variations in size and form 
of ocelli beneath, but no decided radiated varieties. 
In two or three specimens there is a distinct discal spot 
on the hind-wing, with black and white scales. A close 
examination shows it to be present on a few others, but it 
is vague and indistinct when unaccompanied by any white 
scaling. 
The habitat was high up on open hill-slopes, but in 
little hollows of these, where a species of Hrodiwm with 
extremely large and dark marked flowers grew, and it was 
not found away from these. Several species of Helian- 
themum were abundant all about, but it was quite absent 
amongst these. Females were seen to lay eggs on the 
Erodium, selecting the smaller leaves and as near the 
ground as possible. The eggs gathered were unfortunately 
destroyed by the rotting of the succulent leaves, before 
they were properly examined, and no young larve were 
obtained. Several were however placed in formalin. 
LI. idas is of much the same size as astrarche, but the 
latter runs to a somewhat greater expanse in some of its 
varieties. This small difference is much exceeded by that 
which exists in the ancillary appendages, those of astrarche 
being more than half as large again as those of idas. The 
clasps are in astrarche 2°2 mm. long, in idas 1°3 mm., and 
the other parts in much the same proportion. The general 
scheme of construction is nearly identical (as it is in a 
number of allied Zycxnas). In my preparations the clasp 
seems broader in zdas, especially basally, but I think this 
is probably not the case. The difference is rather in some 
of the curvatures, that result in the clasp being spread 
open in das and somewhat folded in astrarche when 
pressed down on a slide. The greatest difference is in 
idas having the clasp quite free of the curious processes 
on its disc found in astrarche, and that do not occur in 
any other European Lycenas I have examined except in 
eumedon. The dorsal processes and their attendant hooks, 
besides being smaller, are shorter and thicker to a marked 
degree in idus (see Plates VI and VII). 
