ACIDALIA RUSTICATA. 97 
these processes is flattened after the fashion of the 
antennee of butterflies. 
The colour of the head is black, the processes being 
dirty white; the body is dingy putty-coloured, freckled 
with smoky black; the ventral is slightly paler than 
the dorsal surface. | 
IT am indebted to Mr. J. R. Wellman for a liberal 
supply of this most interesting larva. J am unable to 
state what is its natural food-plant, but, like so many 
of its kindred, it feeds freely in confinement-on Poly- 
gonum aviculare (the common knotgrass). (Hdward 
Newman, 1870; Ent., October, 1870, V, 176.) 
ACIDALIA OSSEATA. 
Fle COCVAI hie: 7: 
At the time Mr. Alfred E. Hudd, of Bristol, sent 
me the eggs of A. incanaria (Ent., January, 1878, 
xi, 18), he also forwarded a few of A. iterjectarva 
[osseata of Stainton’s Manual]. They were globular in 
shape, and of a pale salmon-colour. 
On the 3rd of August the young larve emerged, 
and were dark purplish-brown; the head black. 
Until autumn they fed on Polygonum aviculare, but 
after hybernation on withered dandelion leaves, ete. 
Only one reached maturity, and it I described on 
April 18th as follows: 
Length nearly half an inch, stout, and rather 
stumpy in appearance; the head has the face flat, 
and is distinctly notched on the crown; it is rather 
narrower than the second segment. ‘The body has a 
more uniform appearance than many of the species 
in the genus, but, like its congeners, the segments 
gradually widen from the second to the ninth; the 
next three are of nearly uniform width, but narrower 
than the ninth, and the thirteenth is still narrower. 
Like all others of the genus I have seen the segments 
overlap each other, rendering the divisions distinct, 
VOL. VII. 
