12‘2 
THE entomologist’s RECORD. 
is just over one millimetre, and the height is about 2-5 the 
diameter. The ribs are about 53 in number. They increase 
in number from the apex by division, and intercalation takes 
place at all distances from the top, but rarely further than 
half-way down, the ribs are distinctly waved, with correspond- 
ing shallow foveolae in the furrows. The micropylar area has a 
very regular rosette of fine willow-leaf-shaped cells, in the 
centre of a small area not encroached on by the ribs. The 
inner egg leaves a distinct colourless margin round the limit of 
the outer shell, but this is less obvious at first glance than in 
some other species. The inner egg is of a rich chocolate 
brown, marked with creamy white, nearly circular, patches, 
somewhat irregular in size and disposition, but tending to be 
arranged in two circles round a central one, making the egg a 
very beautiful and striking object. 
My earliest experience of alni was to have five eggs which 
produced five moths, but, dealing with larger numbers, I find 
the larvae, when first hatched, are so far restless that a certain 
number perish from leaving their food and not finding it again. 
The newly-hatched larva (PI. VL, fig. 3, 3<3:, fed about two 
days) has a large black head, the 3rd, 4th, nth, and 13th 
segments pale, the others dark. Its length is 2 mm. The 
incisions of the segments are very marked owing to the large 
size and projection of the tubercles, the tubercles of 5, 6, 7, 8, 
g, and of 12 and 13 are especially large, appearing almost as if 
fused together, the plates being fuscous in colour and the lines 
between them rufous ; on the loth segment the tubercles are 
not quite so large and the spaces between them towards the 
posterior margin are white, showing a tendency of this segment 
to belong to the pale series. The iith segment has the 
characteristic Acronycta form, projecting slightly laterally, 
depressed dorsally, and with the tubercles and hairs much 
smaller than on any other segments. Each tubercle carries one 
hair, of rather greater length than the diameter of the larva 
(when newly hatched). The second segment has a black 
dorsal plate — Head, when viewed from the front, markedly 
heart-shaped. Alni presents, perhaps more than any other 
species, the large development of the tubercles and their 
angulated margins, as if their forms resulted from their being 
closely packed together. They are really large flat plates with 
a central hair. So large are the plates that a suspicion arises 
as to whether they are not really areas surrounding the 
tubercles proper, represented by the bases of hairs, but 
