184 
THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
its double saclc and becomes a pupa, not 
differing from the ordinary form, and 
finally producing a perfect insect. M. 
Fabre does not describe in detail these 
second larvte and pupse, so that we cannot 
yet judge how far the terms are appli- 
cable, but he remarks that we have here 
a superb example of alternation of gene- 
ration. 
Limited space prevents our doing 
justice to these discoveries, but we hope 
we have said enough to induce English 
entomologists to devote some attention to 
facts so interesting. The well-known skill 
and accuracy of these two excellent ob- 
servers justify us in concluding that their 
assertions will be found to be correct, but 
it is highly desirable that their observa- 
tions should be repealed. In conclu- 
sion, we may be permitted to suggest 
the manner in which these facts are to 
be correlated to the ordinary form of 
metamorphosis. 
All larvae change their skin several 
times during their life ; in ordinary cases, 
after each successive moult, the creature 
alters only in size ; in Pleromalus and 
Sitaris it appears also to vary in form. 
It may be said that in the two latter 
cases it is rather a production of a new 
animal than a mere moulting. Every 
link, however, may be found between 
these extremes, and it is therefore im- 
possible to draw any natural distinction 
between them. 
Mansfield Junior Entomological 
Exchange Society. — Any person wish- 
ing to join this society is requested to 
communicate with — W. H. Smith, 
Market Place , Mansfield, Notts. 
Now ready, price 3s. 6(1. , 
rnilE WORLD OF INSECTS; 
X A Guide to its Wonders. 
By J. W. Douglas, 
Secretary to the Entomological Society of London. 
London: John Van Voorst, Pater- 
noster Row. 
O N SATURDAY, October 3, 1857, 
will be published, No. 53 (the first 
number of a new volume) of 
THE ENTOMOLOGIST’S 
WEEKLY INTELLIGENCER, 
TRICE ONE PENNY. 
Guided by the experience of the pre- 
vious winter, it has been determined this 
season to bring out a winter volume of 
the ‘ Intelligencer,’ which will terminate 
at the end of March. 
Those who make any discoveries or 
captures of importance are requested to 
communicate at once with the Editor 
(Mr. II. T. Stainton). 
Those who wish the ‘Intelligencer’ 
forwarded by post are requested to trans- 
mit 4s. Gd. in postage stamps to E. New- 
man, 9, Devonshire Street, Bishopsgate 
Street, N.E., on or before the 30th of 
September, 1857. 
Will be published every Saturday, 
by E. Newman, 9, Devonshire Street, 
Bishopsgate Street, and by W. Kent 
and Co., 51, 52, Paternoster Row; and 
may be had of all Booksellers and News- 
men. 
“ T)UPA DIGGING.” — Under this 
r title is reprinted, at the low price 
of twopence, the Rev. M r. Greene’s truly 
useful paper on this subject. Entomo- 
logists requiring it will please send two 
penny postage stamps for each copy, and 
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The penny for postage will be sufficient, 
however large the number of copies 
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igsjT None will be sent out without 
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London: Edward Newman, 9, Devon- 
shire Street, Bishopsgate, N.E. 
Printed und published by Edward N B \v man, 
Printer, of No. 9, Devonshire Street, Bishops- 
gute Without, London, in the county of Mid- 
dlesex.— Saturday, September ft, 1857. 
