Abstract
DUBLIN. Royal Irish Academy, June 23.—Dr. F. A. Tarleton in the chair.—H. Ryan and Rev. J. M. Duntea: Unsaturated diketones. I. By the condensation of cinnamic ester, with acetone, acetophenone, methyl-ethyl-ketone, and isopropyl-methyl-ketone, the unsaturated β-diketones, cinnainoyl-acetyl-methane, cinnamoyl-benzoyl-methane, cinnamoyl-propionyl-methane, and cinnamoyl-isobutyryl-methane were synthesised, and their structural properties examined.—H. Ryan and J. Algar: Unsaturated diketones. II. Although benzylidene-acetone does not condense to a β-diketone with benzoic ester in the presence of sodium it reacts readily with dimethyl oxalate. Similarly anisylidene-acetone condenses to a β-diketone with dimethyl oxalate. The diketones formed isox-azols with hydroxylamine hydrochloride, and behaved as weak mordant dyes.—G. H. Carpenter: Aptera, in connection with the Clare Island Survey. Eighteen species of Collembola and two of Thysanura are recorded from Clare Island, and the apterygotan fauna is found to present, on the whole, an Arctic and American facies. One of the commonest insects on the island and neighbouring mainland is Petrobius maritimus, Leach. Some details of the external anatomy of this species are given, and it is shown that the Dutch shore-haunting bristle-tail described by Oudemans, and called Machilis maritima, is entirely distinct from the British and Irish insect named by Leach.—W. M. Tattersall; Amphipoda, in connection with the Clare Island Survey. The number of species recorded in this paper from the Clare Island marine area is ninety-five. No new species are described, but nineteen species are added to the Irish list for the first time, and fifty-four species are new to the area under review. The Amphipoda of Clare Island include thirty-three Arctic species and sixty-two non-Arctic. Of the former, fourteen extend to the Mediterranean and twelve to the coasts of America. Of the non-Arctic forms, twenty-five are found in the Mediterranean, a further twenty-one are confined to the Atlantic coasts of Europe from Norway to France. Six species are common to the British area and the Mediterranean, but do not extend to Norway. A further ten species are confined to the waters of the British area and neighbourhood, and are unknown from both Norway and the Mediterranean.—R. Southern: Nemertinea, in connection with the Clare Island Survey. The total number of species found in the Clare Island area was thirty-one. Of these, two species, Lineus acutifrons and Prostoma beaumonti. were described as new. Tubulanus banyulensis, Joubin, was added to the British fauna, and seven other species were obtained which had not previously been recorded from Ireland. The Nemertean fauna as a whole closely resembles that found in the southwest of England.
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Societies and Academies . Nature 91, 547–550 (1913). https://doi.org/10.1038/091547a0
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DOI: https://doi.org/10.1038/091547a0