14 
Thursday , May 7 th .—Exhibits : Mr. Tutt, a box of lepidoptera from 
Dr. Chapman, including a hybrid between Amphidasys betularia and 
A. prodromaria , a very dark specimen of Toeniocampa populeii , almost 
exactly resembling T. instabilis , a fine banded T. instabilis , series of 
Cuspidia tridens , Viminia rumicis , Cuspidia leporina var. bradyporina , 
Botys terrealis , etc., from Hereford. Mr. Quail, very light cocoons of 
Saturnia carpini. , from Wicken, with the imagines bred therefrom, three 
being very good vars. Mr. Prout, bred series of Coremia ferrugata and 
C. unidentata. With reference to the differentiation of these two 
species, he pointed out that unidentata has a small V-shaped notch in 
the outer margin of the central band, near the costa, but this could not 
be traced in his series of ferrugata. Messrs. Clark, Tutt, Huckett, 
Hodges, and Milton exhibited series of the species of Triphcenidce , 
Mr. Clark reading the following account of the life-history of Triphcena 
subsequa 
“In the autumn of last year (1890) I obtained a few eggs of this 
species from Forres. The first hatched on August 30th, and I reared 
the larvae through the late autumn on knotgrass ( Polygonum aviculare ) 
and dock leaves (. Rumex pratensis) in a warm room, to avoid the large 
percentage of loss which usually occurs when one attempts to hybernate 
larvae. 
“ When first hatched, they are semi-loopers, of a yellowish drab colour, 
with minute brown spots round each segment, from each of which pro¬ 
trudes a tiny brown hair. Head dark brown. September 6th.— 1st 
moult. They are now of a dull olive green colour, with a very pale 
yellowish stripe down each side, no trace of hairs, but still half loop as 
they walk. 2nd moult. Dull brownish colour with distinct yellowish 
lateral lines below the spiracles, with a fine yellowish line above, also a 
very fine centrally dorsal one, and a minute yellowish line round the 
segments. Head pale brown, with three tiny lines down it, anal seg¬ 
ment with one dark patch in centre. On being disturbed the larva falls 
to the ground and curls up. Legs and under side olive green. 3 rd 
moult. There is now a drab line down each side with a slender black 
one underneath and a brown one above. There are also three pale 
lines down the back, the side ones are yellowish and the central one 
white with two rows of small black spots on either side, those on the 
10th, nth and 12th segments being wedge-shaped and smaller towards 
the head ; two black lines down the head and a V-shaped white mark. 
Underside drab. 4 Ih moult. The lateral stripes of a very light brown, 
with a darker one above and below each of them, the three pale dorsal 
lines are very distinct, the central one being white, whilst on either 
side of it is a row of very black oblong spots, each of which alternates 
with a similar spot of very pale brown. The head has two distinct 
dark brown stripes, continuations of the dark markings on the back. 
The legs and underside are of a pale greyish brown. 5 th moult. It 
has now a very light greyish brown stripe down each side, with minute 
black spots down its centre. Both above and below this, is a dark 
brown stripe. The three lines down the back are more distinct, being 
very light brown edged with black; the spots on the segments are 
oblong in shape, and brown and black alternately. (In all the stages 
the larva tapers towards the head). Two distinct black lines on the 
head and V-shaped marking on the anal segment. 6 th moult. Same 
