162 CALIFORNIA ACADEMY OF SCIENCES. 



rephalns Greeu), H. herscheUi ii. sp. Oalymeue blumenbachii Broug. Asa- 

 phus caudatus'Broiig., A. titberculato-caudaius n. sp., A. {Olenws) flabeUifer? 

 Steiuiuger, A. cawdori n. sp., A. subcaudatus u. sp. Galymene. vai-iolaria 

 Brong., C. macro phthalma Bi'ong., C? downingke u. sp., C iuberculata u. 

 sp. Asaphus stoJcesii n. sp., A. longicaudatus n. s]3. Biimastus barriensis 

 n. sp. Paradoxides bimucronatns n. sji., P. qiiadrimncronufns u. sj). 

 ^4 cidaspis brightii u . sp . 



Trilobites of the Lower Siluriau (Caradoc it Llaudeilo): Trhiucleus 

 cnractaci n. sp., 7\ ^fimbriafus u. sp., T. radiatus n.sp., T. Uoydil n. sp., 

 T. nudtis n. sp., T.? asaphoides u. sp. Calymene? punctata Brituii. Asa- 

 phiix powmi n. sp. Illa-nus ? perovalis u. sp. A.'iaphus duplicatus \\. sp. 



Trilobites from the Llandeilo: Asaphus buchii Hvong., A. t yr annus n. 

 sp., also var. ornata, A. corndensis u. sp., A. ? rulcani n. sp. Ogyg/a 

 murchisonin. sp. Agnostus pisiformts? Liuiie. 



Cyprts hiflata, p. 84, has beeu referred to LeperdUia by Joues. 



Metamorphosis of certain Trilobites as recently 



discovered by M. Barrande. 



In Eep. 19th Meeting Brit. Assoc. Adv. Sci., 184:9, 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. Joi;r. Geol. Soc. Loudon, vol. 7, 1851, p. 137, pis. 8-10. 



Cheirurus geUmnosus Portl. Asaphus sp. ? Calymene blumenbachii Brong, 

 Phacops stoke.sil Milne-Edwards. Ilkenus bowmanni ? Lichas laxatus Mc- 

 Coy. Encrimirus 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 Britian. 



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



Geology and pakeontology of Russia and the Ural Mount- 

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



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



