16 THE ENTOMOLOGIST. 
be a few unfertile females. Having expressed somewhat 
reluctantly my opinion,—so adverse to the desired success,— 
I will state what I believe to be the only plan that can be 
adopted with any hope of success. In the first place, I 
should not think of attempting to introduce any surface- 
building species. [I should select two or three of the hardiest 
ones,—such as Bombus terrestris, B. Lucorum, B. Hortorum, 
and B. subterranea. In order to make the chance of success 
as great as possible, I should take care to send only 
impregnated females: these can now be obtained, all the 
humble-bees having retired to their winter-quarters. A 
number of such females were required some years ago for 
scientific purposes: a collector was employed, who searched 
under my own instructions. The result was that he obtained 
in a few days over fifty females, all in a torpid state. My 
plan would be to get a number of such torpid bees, and, by 
some of the best-known means of refrigeration, keep them in 
a state of torpidity during the voyage. This once accom- 
plished, success would be certain. Humble-bees survive 
four or five months of torpidity, and they can now be 
exported in a much shorter time than five months. This is 
the plan I recommended when applied to, and I should 
certainly not have thought of trying an experiment which I 
fear will prove a total disappointment.—Frederick Smith. 
[ From the ‘Field.’ } 
Additions to the List of Macro-Lepidoptera inhabiting 
Guernsey.—Sesia Megilleformis ?—Having noticed that the 
Sesia mentioned in a previous list (Entom. viii. 30) as 
Ichneumoniformis seemed somewhat different. from the usual 
type, as figured in Newman’s ‘ British Moths,’ I sent it to the 
late Mr. H. Doubleday, with an enquiry as to whether it had 
been correctly named. The following was Mr. Doubleday’s 
reply :—‘“I do not possess a Sesta exactly like the one you 
sent. It is very closely allied to Ichneumoniformis, but the 
yellow bands on the abdomen are fewer, and the caudal tuft 
is not exactly the same. I never saw the Megilleformis of 
Hiibner; but Dr. Staudinger gives it as a variety of Ichneu- 
moniformis, and says there are only three yellow bands on 
the abdomen.” Nonagria geminipuncta.—One specimen 
taken, flying to the light of my lantern at the Grande Mare, 
Vazon, on September Ist. Xylina pelrificata.—One specimen 
taken at ivy-bloom, October 14th.—W. A. Luff; Guernsey. 
