66 
abdominal segments, but interrupted on front half of 5th abdominal, 
and inclining to be so on the two or three segments proceeding ; 
ventral line pale, as in 3rd instar, and other lines differing slightly in 
in shade from the ground colour also run longitudinally ; segment- 
incisions distinct, pale. The anal processes are so slight and obtuse 
as to be hardly worth mentioning, and even in the 3rd instar, where 
they were more noticed, I should probably have passed them by but 
that they seem to show yet a third link (absence of pencil-tuft in imago 
and of wing-case markings in pupa being the others) between L. 
pyraliata and the non-Lygrid Cidarians. The duration of the different 
stadia in one larva which I had under close observation was as follows: 
1st stage, about 9 + 2 days; 2nd, about 5 + 2; 3rd, 12 + 3 (colder 
weather); 4th, 18 + 6 ; total, 49 days (April 9tli to May 2Sth, 1901). 
I may explain that the number added after the plus sign indicate the 
days occupied with the ecdyses. 
Eusi'koma silaceata (? Scbiff.) Hb.—In my previous paper I 
pointed out that this species was, by strict laws, the type of the genus 
Eustroma, and that in case it should prove necessary to unite this 
genus with Lygris, the name Eustroma would have priority. But I 
had no per.-onal knowledge of the early stages of E. silaceata, and as 
various authorities had various different views as to its affinities—one 
likening it to Lygris prunata, another to Lawpropteryx snffum'ata, 
another separating it widely from both—I expressed myself very 
impatient to make acquaintance with them. You may guess, therefore, 
how 7 pleased I w 7 as, when on the night of August lst-2nd this year, 
my friend Mr. J. E. Gardner captured a good female on the North 
Devon coast, and how I prevailed upon his good nature to keep her 
alive—though he wanted the specimen for his collection—until she 
had laid a few eggs. Fortunately she was not long in obliging us, 
laying 16 the same night and early next morning, and so we W'ere 
able to kill her before any material damage had been done. 
Owing to my absence from home and from my microscope, I was 
unable to examine the egg and newly-hatched larva so minutely as I 
could have wished; but with the aid of a good hand-lens I could 
make out quite enough to satisfy myself that neither conformed to my 
generic characters for Lygris, and that the latter name (for populata, 
etc.) need not fall. The egg w'as (as in Lygris) rather large, but not 
(or hardly) flattened at its broader end, and of a different texture from 
Lygris, smoother and less granulated, and a good deal polished ; in 
colour it was quite a whitish yellow (whiter than that of Cidaria 
immanata), although it must be added that its colour-change (on the 
3rd or 4th day) gave some suggestion of the mottling of Lygris populata, 
and testata: the change commenced on about tbe 2nd day, with a 
tendency to become slightly yellower, but in another day or two the 
eggs become much spolttd and dashed with bright carnation-colour, 
giving them a tolerably uniform flesh-coloured appearance to the 
naked eye. 
The larvie hatched in about 9 days, after a final change of the eggs 
on tbe 8th day to a deeper purplish. The newdy-hatched larv® were 
long and slender, apparently about the size of those of Lygris pyraliata 
and very active. Head tolerably large, somewhat inclined to be 
broadened, and flattened in front; body uniformly cylindrical. 
Tubercles not discoverable (w'ith the hand-lens), set® very short and 
