78 
THE ENTOMOLOGISTS WEEKLY INTELLIGENCER. 
them in one of those pots and S'. Populi 
in another), I every evening, before dark 
or twilight, took out the female of S. ocel- 
lalus, one or two, not more, and put them 
in the pot with male Populi and vice 
versa, and then placed the two pots close 
side by side in the garden or window for 
the night, so that the female of each spe- 
cies formed an attraction to its own male, 
while the male could only gain access to 
the female of the other species. By this 
treatment I obtained five broods of eggs 
of Populi impregnated with Ocellatus 
and one of Ocellatus impregnated with 
Populi; only about thirty eggs of one of 
the former broods hatched, about the 
middle of June last. Nineteen cater- 
pillars I reared to perfection, which went 
under ground in about a month or five 
weeks after ; and, in August last, twelve 
of the moths came out perfect ; the other 
seven are still in the chrysalis, and will, 
in all probability, come out in May next. 
The insects thus obtained are as near 
alike each other as any species that I am 
acquainted with, and are as nearly inter- 
mediate as we can conceive. The power 
of reproduction is completely lost, as they 
appear to be as near intermediate between 
the sexes as between the species ; they 
evidently partake of the nature of both 
sexes: as proof, every fresh-bred insect 
of the genus Smerinthus on being touched 
discharges copiously a fluid, which, in the 
male, is pure white, in the female of a 
yellow or ochre colour. These specimens 
discharged, at the same motion, first the 
white and then the ochre fluid, quite dis- 
tinct, and this compound discharge was 
quite uniform in every specimen, which 
is never the case in any true species or 
sex. 
“ I had often indulged in fanciful 
ideas respecting this production, but I 
never conceived of such an unfinished 
painting as it is: this is not nature im- 
proved by art, but nature sadly defaced 
by art, as the beauty of both species is, in 
a great measure, lost. 
“ I took care to provide myself w ilh 
eggs of both species, which should hatch 
at the same time as my hybrids for the 
sake of comparison ; in their infant state 
no difference w r as observable between 
them and Populi , very little in their 
second stage, more however in the third, 
and finally they were more like Ocellatus 
than Populi; the chrysalis differed as 
much from either, yet as much resembled 
both, as the moth. Whether such a pro- 
duction has ever been obtained before or 
not I am totally ignorant, as I have never 
had the advantage of studying any work 
on Entomology. I have also several other 
varieties of similar origin in contempla- 
tion, but my leisure time is very limited ; 
and I should be very glad to hear that 
some gentleman of leisure has produced 
a brood between a male Populi and a 
female Ocellatus by this day twelve- 
month.” 
This notice is followed in the 4 Trans- 
actions,’ by a description of one of the 
hybrids by Mr. Westwood (and a coloured 
figure, pi. xi. fig. 1), with remarks on 
hybridism in general. 
LINES 
Suggested by the account of Boletobia 
Fuliginaria (‘ Manual,’ No. 16, p. 32). 
Fuliginaria, subterranean queen ! 
Fair ^Proserpine that rul’st in city 
cellars ! 
Cloacan rarity, but seldom seen, 
Save by the most adventurous of 
feller(ow)s! 
O could I give a recipe to catch 
Thee napping in some odoriferous 
sewer ! 
Each town collector soon would light his 
match, 
Pirithous-like to search the realms ob- 
scure. 
