122 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 r?/;// 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 (PL VI., fig. 3, ^a, 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 nth 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 



