Entomological Society. 281 
ENTOMOLOGICAL SOCIETY. 
October 7th, 1844.—G. Newport, Esq., President, in the Chair. 
Mr. Bedell exhibited specimens of Tortriz rutilana, Hb. (a species 
new to Britain), taken at Sanstead Down near Croydon, on juniper 
bushes. 
Mr. Wollaston exhibited numerous specimens of the rare Cossonus 
Tardii, taken in decayed beach and sycamore trees in Lord Mount- 
Edgcombe’s park, Cornwall. 
Mr. Raddon exhibited a number of caterpillars of a species of 
Agrotis, which had proved very destructive to the potatoe crop in 
Devonshire, eating through the young shoots just beneath the sur- 
face. 
Mr. Edward Doubleday exhibited a box of Chilian Coleoptera, 
some of which were new, and of interesting forms. 
The President exhibited a number of specimens of Vanessa Io, 
which he had subjected in the larva state to a series of experiments, 
with the view of determining the question as to the power of repro- 
duction of the limbs in those orders of insects which undergo a 
complete metamorphosis, and which had fully determined the ex- 
istence of such a power, the entire legs, including the whole of the 
coxa and the different parts of the legs, being reproduced: in some 
cases the limb reproduced was small and comparatively imperfect ; 
but in all the ungues were reproduced, although the tibial spines 
were generally absent, as he had also observed to be the case in 
the Lithobiide. He had also determined that the reproductive pro- 
cess took place in the antennz of the Julide when cut off in the 
middle. Many of the caterpillars had however died from excessive 
hemorrhage, and he had found that the best period for prosecuting 
the experiment was, preceding the last stage of the insect’s existence 
as a caterpillar, two or three days before or after the moulting takes 
place: in moist weather the number of caterpillars which died was 
far greater than in fine weather, the blood coagulating slowly. [See 
the details of these experiments published by Mr. G. Newport, in a 
subsequent part of the Philosophical Transactions of the Royal So- 
ciety of London.] 
Mr. H. Goodsir gave an account of his experiments and observa- 
tions on the reproductive powers of the Crustacea (which he had 
communicated to the preceding meeting of the British Association), 
He had found the reproductive power greater in this class than in 
Insects; but he had observed that the antennz in the Crustacea are not 
capable ‘of reproduction. He exhibited an extensive series of drawings 
illustrating the process of reproduction. He had observed, that when 
the leg is injured in any part, the Crab throws it off ata spot in the 
coxa distinguished by a slender annulus, the extreme base of the 
‘coxa not being capable of reproduction. In the lower Crustacea, 
however, he had observed that reproduction takes place from any 
part of the legs, and not merely at the middle of the coxa, as in the 
Brachyura. #e had detected a system of oil-vessels within the 
Ann. & Mag. N. Hist. Vol. xvii. X 
