THE EGG OF COSSUS ORC, STRECK. 317 
continental species. Since then I have made further acquaintance 
with this bright little moth, and as several entomologists have asked 
questions by letter, I think you may like to have the scanty information 
at my disposal. 7. pronubana makes its appearance at the extreme 
end of August*, and continues up to the end of the first week of 
October — weather permitting. To any but collectors of the 
Tortricids it might escape attention, I should think by being mistaken. 
for a small Tortria pyrastrana, but though very variable, it is roughly 
distinguishable from that species by its black band, especially decided 
in the male, the under wings being very like those of Triphaena pronuba 
in miniature. The yellow underwings are also of a much more coppery 
and fiery orange, but the two sexes are very dissimilar, as in 7’. pyras- 
trana. So far as I know, too, the latter is over before 7. pronubana 
comes on. Another curious difference is that while 7. pyrastrana 
comes freely to sugar in my garden, 7. pronubana, though abundant 
within two yards of several sugaring places, has never been seen by 
me at the sweets, though I have found it at rest by the aid of a lantern 
on the Huonymus hedge close by. This appears to be its food-plant, for I 
bred a ? from a pupa found in a twisted shoot thereof on September 
29th, and many empty pupa-cases were observed. The imago also is 
usually observed hovering over or resting thereon, and last year I found 
eges by the side of a female which had evidently just laid them on 
the leaf of this plant. The eggs make a bright triangular shaped 
splash of vivid ereen, almost exactly the colour of the brighter tints of 
this evergreen. The customary time of flight of the imagines is from 
8 a.m. to 10 a.m., in the bright sunshine. It appears most probable 
that it only wants looking for at these hours on the sunny side of some 
of the Huonymus hedges, now socommon in the south of England, to 
be found to be a truly British subject. On September 20th and 21st 
last, between 8 a.m. and 9 a.m., I observed the males flying in dozens 
round the hedge, and soon discovered several females, some already 
paired. I have never netted a female, but always found them by 
searching on the upper side of the slightly curved fully developed leaves 
of the Huonymus, but out of the direct glare of the sun. I fancy it 
flies very seldom, neither have I observed the species to fly at dusk 
when I am putting on the sugar as I often see others of this family. 
In conclusion let me say that I hope these remarks will be regarded 
leniently as the opinions of an amateur, as | have made no study of 
Tortricids, and profess no knowledge of their habits. 
The species is no. 731 in Staudinger and Wocke’s Catalog (1871), 
p. 288, and is there placed in group H (Heterognomon, Led.) of 
Tortrix, Li., between 7. viridana and 7’. insolatana, and ‘‘ Kur. meridi- 
onalis”’ only is given for its distribution. Yortriv pyrastrana (or rather 
podana, Scop.), with which it is here compared, is placed in this 
Catalog, p. 285, in group A (Cocoecia, Hb.), between 7’. piceana and T. 
testaceana. 
* Occurs in April on the Riviera where we have taken it not uncommonly.—Ep. 
The egg of Cossus orc, Streck., with some notes on the eg¢ of 
C. ligniperda. 
By T. A. CHAPMAN, M.D., F.Z.S., F.E.S. 
Some ova of Cossus orc, Str., were received from Mr. Tutt. They 
