HYRIA AURORARIA. 71 
with greyish; head brown, marked with greyish,— 
from it extends the distinct black double dorsal line ; 
there are no perceptible subdorsal or spiracular lines, 
but the lateral ridge on each side is faintly outlined with 
pink ; the ventral surface is a mixture of dull brown and 
~ gmoke-colour,with a distinct slate-coloured median line. 
This larva spun up next day, and was the only one 
I reared to maturity; the cocoon was loosely con- 
structed in an upper corner of the cage. 
I had no opportunity of describing the pupa until 
after the emergence of the imago, which event took 
place on the 18th of July. Afterwards I found the 
empty case to be five-eighths of an inch long, the wing- 
cases prominent, and the anal tip sharply cut; colour 
reddish-brown, the wing-cases conspicuously streaked 
longitudinally with black. (George T. Porritt, 4th 
August, 1876; Ent., September, 1876, [X, 197.) 
ASTHENA CANDIDATA. 
Plate CXVI, fig. 3. 
On the 14th of August, 1872, I received a larva 
from Mr. Harwood, feeding on birch. This geometer 
reminded me very much of Cidaria sagittata in its 
hunched posture, while the colouring was a good deal 
like that of Venusia cambricaria. 
The tubercles were warty eminences, each bearing a 
black finely-pointed hair or bristle. The larva was 
upwards of half an inch in length. Segments tumid, 
wrinkled, divisions deep. | 
In colour it was very pale yellow-green, blue-green 
at each end, rather sulphur-yellow along the puffed 
spiracular region, the subdorsal stripe faintly whitish- 
yellow. Head clear greenish, marked on each lobe 
with black. All the legs pink. The second segment 
deep damask rose-pink on the back, faintly divided by 
a dorsal line of pale green just at the beginning. 
