162 CALIFORNIA ACADEMY OF SCIENCES. 



cephalus Green), H. herschelii n. sp. Calymene blumenbachii Broiig. Asa- 

 phuscaudatus~Brong., A. tuberculato-caudatus 11. sp., A. (Olenus) flabe llifer? 

 Steiniuger, A. caivdori n. sp., A. subcaudatus n. sp. Calymene variolaris 

 Brong., C. macrophthalma Broug., (7.? doivningice n. sp., G. tuberculata 11. 

 sp. Asaphus stokesii n. sp., A. longicaudatus n. sp. Bumastus barriensis 

 n. sp. Paradoxides bimitcronatus n. sp., P. quadrimucronatiis n. sp. 

 Acidaspis brightii 11. sp. 



Trilobites of the Lower Silurian (Caradoc & Llandeilo): Trinudeus 

 caractaci n. sp., T. fimbriatus u. sp., T. radiatus 11. sp., T. lloydii 11. sp., 

 T. nudus 11. sp., T. ? asapholdes n. sp. Calymene? punctata Briinn. Asa- 

 phus powisii 11. sp. Illwnus ? perovalis n. sp. Asaphus duplicatus u. sp. 



Trilobites from the Llandeilo: Asaphus buchii Brong., .4. tyrannus 11. 

 sp., also var. ornata, A. corndensis n. sp., ^4. .? vulcani 11. sp. Ogyg/a 

 murchisonin. sp. Agnostus pisiformis? Liiine. 



Cypris hiflata, p. 84, has been referred to Leperditia by Jones. 



Metamorphosis of certain Trilobites as recently 



discovered by M. Barrande. 



In Kep. 19th Meeting Brit. Assoc. Adv. Sci., 1849, Trans. Sec., p. 58. 

 Sir K. Murchison brought before the Section the important discovery 

 of Barrande of the metamorphosis of Trilobites as exhibited in Sao hirsuta. 



On the Silurian rocks of the south of Scotland, 



with a list and description of the Silurian fossils of 

 Ayrshire, by J. W. Salter. 



In Quart. Jour. Geol. Soc. London, vol. 7, 1851, p. 137, pis. 8-10. 



Gheiinirus gelasinosus Portl. Asaphiis sp. ? Calymene blumenbachii Brong, 

 Phacops stokesii Milne-Edwards. Illcenus boivmanni? Lichas laxatus Mc- 

 Coy. Encrinurus punctatus Briinn. 



Siluria. A history of the oldest rocks in the 



British Isles and other countries. London, 1854, geol. 

 map., 41 pis. 4th ed., London, 1867, geol. map., 42 

 pis. 5th ed., 1872, with atlas of 42 plates and geological 

 map. 



The figures are all transferred from the original plates in the "Silurian 

 System." 



The appendix contains a table showing the vertical range of the Silurian 

 fossils of Britiau. 



and Verneuil (E. de) and Keyserling (Alex. von). 



Geology and palaeontology of Russia and the Ural Mount- 

 ains. London, 1845, 2 vols., 50 pis. 



Palaeontology, vol. 2; Crustacea, p. 376, pi. 27. 



