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- W4240050139 abstract "LONDON. Geological Society, April 12.—Prof. A. C. Seward, president.—F. W. Edwards: Oligocene mosquitoes in the British Museum, with a summary of our present knowledge concerning fossil Culicidae. All the specimens are from the Oligocene of the Isle of Wight. The genera appear to be inseparable from those of the present day, and some of the species suggest a fauna similar to that of Ethiopian and Oriental regions. No peculiar forms occur. The genus Anopheles has not been found, probably because of its comparative rarity. Three species from the Oligocene of the Isle of Wight, described by Prof. Cockerell, are referred to the genus Aedes; and two new species, one of Culex and one of Taeniorhynchus, are described. No fossil that can be positively referred to the Culicidse is yet known from the Mesozoic.—A. C. Seward: On a collection of Carboniferous plants from Peru. The plants described were collected by Mr. J. A. Douglas in 1911 from coal-bearing strata on the south side of the Peninsula of Paracas, a few miles south of Pisco on the coast of Peru. They are mostly fragmentary; whether they are of an Upper or a Lower horizon is not certain. Hitherto no fossiliferous Palæozoic rocks have been recorded from the Peruvian coast.—Miss M. E. J. Chandler: The geological history of the genus Stratiotes: an account of the evolutionary changes which have occurred within the genus during the Tertiary and Quaternary eras. Stratiotes, a mono-typic genus of European and West Asian water-plants, can be traced back to the Eocene. The recent seed was described and an account given of the modifications which have occurred in the genus since the Eocene period. Of nine species described, S. aloides alone is still living. Seven appear to be direct ancestors of the recent plant, while two perhaps represent a branch-line of evolution. The fossil species occur in great abundance, are widespread geographically, and each seems to have a limited range in time. They may therefore serve to correlate isolated freshwater deposits in Europe." @default.
- W4240050139 created "2022-05-12" @default.
- W4240050139 date "1922-05-01" @default.
- W4240050139 modified "2023-09-26" @default.
- W4240050139 title "Societies and Academies" @default.
- W4240050139 doi "https://doi.org/10.1038/109598b0" @default.
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