318 THE ENTOMOLOGIST’S RECORD. 
were obtained from a female found at Tilbury Dock (antea, p. 393). 
These eges are of large size and very similar in general appearance and 
texture to those of Cossus ligniperda. They are especially alike in 
having their sculpture marked out by the addition of a dark material, 
probably a cement to retain the eggs in the crevices in which they are 
naturally laid. In these eggs the sculpturing is so bold that the pig- 
ment filling the hollows marks out the pattern more conspicuously. 
In those of C. ligniperda the sculpture is less bold, and is apt to be 
obscured by the pigment, yet the general effect is much the same. 
The difference between the two eggs is also great; that of C. ligniperda 
has all the appearance of an upright egg, with a somewhat flattened 
base, and its sculpture is ribbing of a character not absolutely different 
from that of a Noctuid. The ege before us has only one character of 
an upright egg, viz., its tranverse section, ¢.e., the section at right 
angles to the micropylar axis is everywhere circular. It has no 
flattened base, but in form both ends are tolerably alike. The longi- 
tudinal section through the micropyle would be an ellipse were it not 
shghtly sharpened towards the ends, and perhaps rather fuller towards 
the micropylar side of the equator. 
The egg is no less than from 2:3mm. to 2°5mm. in length, and 
from 1:‘7mm. to 1-8mm. in diameter, varying a little in size in 
different specimens. The sculpturing is a network of very bold, broad 
raised lines or ridges, which are fully a fourth in width of the spaces 
between, and apparently equally high. The pattern is very irregular, 
and is as often of squares as of good hexagons, but the line of ridge 
often goes straight past six or eight cells, and in so far presents a step 
towards the passage from network to ribbing. The cells of the net- 
work are much larger towards the micropylar end, and the change takes 
place rather rapidly a little above the equator. They are even smaller 
towards the nadir, over which they are continuous. The diameter 
of a cell some way above the equator is about -12mm., and at an equal 
distance below ‘O7mm. ‘The micropylar rosette is a circle of narrow 
radiating small cells ‘2mm. in diameter, and followed immediately by 
the general coarse netting. 
The question as to whether the great differences between this egg 
and that of C. ligniperda imply want of near relationship is interesting 
and difficult. No doubt it does imply want of near relationship, but 
probably less than the same difference would in more evolved families. 
We do not refuse to the Acidalias a position with the Geometrids, 
because they have eggs that in some cases are really upright, recognis- 
ing that there is a constant tendency for flat eggs to specialise into 
upright ones. Such a tendency would act more readily no doubt lower 
in the series, so that we must probably conclude that the Cossids have 
flat eggs, tending to develop into upright ones, which is largely 
expressed in C. ligniperda and possibly leads on to the egg of Castnia, 
which is upright in form. 
Lepidoptera in the Hautes-Alpes: Abries. 
By J. H. and J. W. TUTT, F.E.S. 
(Concluded from p. 262.) 
Another delightful trip, and probably the most successful entomo- 
logically, was that to the Créte de Reychasse. For this one starts by going 
