221 
^ OP BRITISH MACRO.LEPWOPTERA WHICH HYBERNATE IN 
THE EGG STATE. 
BY THE KEY. J. HELLINS, M.A.. 
ee the publication of my note on the hybernating ovum at 
f this vol., I have collected some information which may be ot 
■haps I ought to say, that the question I put in my former note 
n previously started in the course of a correspondence between 
iVallace and Dr. T. A. Chapman. The former had satisfactorily 
bed the fact that the larva of Bomby^ Tama-Mai is perlected 
he egg shell a month after deposition, and therein hybernates, 
.rging till spring ; and he was anxious to know if this were the 
uerally with those species which pass the winter m the egg. 
thought of this question some years ago, I might have made 
ase of opportunities, which have presented themselves from time 
and then I could have given dates for a great many species; 
'r my deficiences have been made up by friends, and so, from my 
)ok8 reaching back to 1857. and by the kind help ot Dr. T. A. 
an Eevs. Bernard Smith and H. Harpur Crewe, and Messrs. 
Barrett, W. Buckler, T. J. Carrington, A. H. Jones, W. Machm, 
Traill I have got together what follovvs. 
uring this winter, eggs of Bombya; mori, Tricldura cratcegv, 
^os tiUaria and angularia, Ckeimatobia brumata and boreata 
la vetulata, Ftilophora plumigera, Xanthia aurago and Polia cU 
,een examined from time to time up to the middle of January; 
,far-withone exception only-nothing but the faintest traces 
. future larv* have been detected by microscopic examination ot 
3till fluid contents. At the last examination-about January 14th 
larva of X aurago was found partially developed, but not to such 
■ree that it could be extracted from the shell in the larval torm. 
\ therefore, the guess formed by Dr. Chapman and myself, that, 
4neral rule, the larva is not developed till after hybernation, has 
confirmed. Still there are many more species to be examined, fVu- 
indeed than I imagined till I set myself to make the hst ot 
which I now give in two divisions; the first containing those 
Ls the dates for the deposition of the egg and the hatching of the 
of which can be vouched for either by myself, or by one or more of 
bove-mentioned correspondents ; and the second giving the species, 
t which we have no positive information, but which we believe to 
; the same habit. I think it probable that the names of some 
rs ought to be added. 
