T HE ANNALS AND MAGAZINE OF NATURAL HISTORY. [THIRD SERIES.] No. 11. NOVEMBER 1858. XXXI. — On Permian Entomostraca from the Fossiliferous Lime-stone of Durham. By J. W. Kirkby. [With a Plate.] Mr. Rupert Jones first noticed the occurrence of Entomostraca in the Permian System of England. In Prof. King's Monograph of the Permian Fossils of England, he (Mr. Jones) describes several species, which were principally obtained from the upper beds of the Durham Permians*. With the exception of the notice of a single species by Prof. King, from a Permian deposit near Tullyconnel in the county of Tyrone, Ireland f, no additional observations have been published on Permian Entomostraca in Britain. In 1851-53 Dr. Reuss described ten species from the Perm-ians of Germany, which were found in the Unter Zechstein of Bleichenbach and Selters, in the Wetterau {. Some of the species he considered to be new, others to be identical with forms found in the upper beds of Durham. From the Permian rocks of Russia, six new species were de-scribed by Alex. Graf Keyserling, in 1854 §. In 1855, M. Richter noticed the occurrence of eight species in the Unter Zechstein of Saalfeld. Among them was one new form ; the rest were referred to species that had been previously described by Jones and Reuss||. * Monograph of Perm. Foss. of England, pp. 58-66. f Journal of the Geological Society of Dublin, vol. vii. p. 78. % Jahresbericht der Wetterauer Gesellschaft, 1851-1853, pp. 65-70. § Reise durch dieTundren derSamojeden, Dorpat,1854,pp. 11 1-113. pl.4. Permian Entomostraca were observed in Russia previous to this date ; but the notices of them merely mention the fact of their occurrence, without specific details. See Table of Formations of the Government of Simbirsk of Jaaykow, 1844, Petersb. Miner. Gesellsch. || Zeitschr. der Deutsch. Geol. Gesells. vol. vii. pp. 526-533. Ann. $ Mag. N. Hist. Ser. 3. Vol ii. 22
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