Entomological Society, 281 ENTOMOLOGICAL SOCIETY. October 7th, 1844. — G. Newport, Esq., President, in the Chair. Mr. Bedell exhibited specimens of Tortrix 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 Tarda, 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 lo, 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 metamorjjhosis, 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 Lithobiidce. He had also determined that the reproductive pro-cess took place in the antennae of the Iulid(B when cut off in the middle. Many of the caterpillars had however died from excessive haemorrhage, 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 antennae 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 at a 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. tie. had detected a system of oil-vessels vdthin the Ann, ^ Mag, N, Hist. Fo/. xvii. X
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