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) desciibes 

 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 t, 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, sLx 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. 



t Journal of the Geological Society of Dublin, vol. vii. p. 7S. 



X Jahresbericht der Wetterauer Gesellschaft, 1851-1853, pp. 65-/0. 



§ Reisedurch dieTunilrenderSamojeden,Dorpat, 1854,pp.ll l-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. 



II Zeitschr. der Deutsch. Geol. Gesells. vol. vii. pp. 526-533. 



Ann. &; Mag. N. Hist. Ser. 3. Vol. ii. 22 



