Mr. J. Walton on the genus Otiorhynchus. 445 larva of Echinaster Sarsii, which is preserved in the museum of M. Christie in Bergen, anything more than what has been de-scribed and figured by M. Sars. At the time when these larvse have developed the star-fish of the AsteriaSj the arms of the larvze still being present, their great-est diameter is two-thirds of a line. Two pairs of tentacles are developed in each of the five rows of tentacles. But no trace of aperture can be recognised in the centre of the ventral side of the star-fish. If the oral aperture of the larva, as I suppose, exists between the four arms of the larva, the mouth of the Asterias is formed independently of the supposed mouth of the larva. The most central and lowest tubercle, situated between the four other bulbous warts, has a slightly rounded and somewhat basin-shaped aspect. Although these larvse are absolutely larger than the larvse of the Ophiurce and Echini, nevertheless they appear to contain little or no skeleton within them. From their perfect opacity and uniform red colour, I endeavoured to render their skeleton visi-â– ble by dissolving the animal parts in caustic potash, but this pro-ceeding did not bring into view any portions of a skeleton. The supposition of Sars, that the warty appendages of the larva of the Asterias, by means of which it adheres to the marsupial cavity of the mother, are subsequently transformed into the ma-drepore -plates, does not appear to me probable. These appendages are evidently the same as the four symmetrical supports of the body of the larva of the Echini and the appendages of Piuteus ; in both they disappear entirely, without being transformed into any other organ, and the young Echinus loses them before the madrepore-plates can be distinguished. Moreover the Echinoid larvse which I last described possess so many arms on their body and on so many spots which are partly opposite, that a conver-sion of them into the subsequent madrepore-plates is impossible, on account of the situation which these arms occupy on the an-terior, posterior and lateral part of the larva. XLVI. — Notes on the genus of Insects Otiorhynchus, with descriptions of new species. By John Walton, F.L.S. [With a Plate.] Fam. CURCULIONlDiE. Genus Otiorhynchus, Germ., Schonh., Steph,, Curt. § A. Femora dentate. 1. Otiorhynchus Ligustici, Linn., Mus. Linn., Marsh., Gyll., Steph., Schonh. Rare, or very local; Mr. Smith found three specimens on Hawley-fi.at, near Blackwater, Hampshire, in June. Frequently
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