192 CALIFORNIA ACADEMY OF SCIENCES. 



Palaeontological appendix. 



In Mem. Geol. Survey Gt. Britain, vol. 2, pt. 1, 1848, pp. 331-352, 

 figure, pis. 5-8. 



Phacops stokesii Milne-Ed w., P. downing ice, Murch. Dalmania affinis Salt. 

 Proetus latifrons McCoy. 



Sec. Asaphus divided into genera Asaphi and Ogygia. 



1 Sec. Illcenus and Asaphus. Illcanus rosenbergii Eichw., / bowmanni Salt. 

 Ogygia. Lichas laxatus McCoy, L. verrucosus Eichw., L. sp. ? Calymene 

 brevicapitata Portl., C. tuberculata Salt. Cybele sexcostata Salt., C. verrii- 

 cosa Dalm., C. variolaris Brong. Sphcurexochus juvenis Salt. Cheirurus 

 speciosus Dalm. Olenus bisulcatus Phill., 0. humilis Phill., 0. spinulosus? 

 Acidaspis brightii Murch., A. bispinosus McCoy. Trinucleus ornatus 

 Sternb., T. ornatus var. favus Salt. Ampyx parvulus Forbes. Agnostus 

 Irinodus Salt., A. convexus Salt. Beyrichia tuberculata Kloden, B. com- 

 plicata Salt., B. gibba Salt. 



Appendix A to British Palaeozoic fossils in the 



Geological Museum, University of Cambridge. London, 

 1852 (Sedgwick and McCoy). 



Description of a few species from Wales and Westmoreland, referred to 

 in the foregoing work by John William Salter, p. 645. 



Cythere? umbonata n. sp. Beyrichia complicata Salt., B. strangulata n. 

 sp. Phacops (Odontochile) obtusicaudatus n. sp., P. (Phacops) alifrons 

 n. sp., P. (Phacops) apiculatus n. sp. Calymene par vifrons n. sp. Cheiru- 

 rus clavifrons Dalm. Cybele rugosa Portl. Encrinurus sexcostatus Salt. 

 Lichas nodulosusu* sp. Illcenus davisii Salt., /. murchisoni Salt., /. boic- 

 manni Salt. ffomalonotus bisulcatus n. sp., H. bisulcatus var. minor, H . 

 rudis n. sp., H. sp.? Eurypterus cephalaspis n. sp. 



On the lowest f ossilif erous beds of North Wales . 



In Eep. 22d Meeting Brit. Assoc. Adv. Sci., 1852, Trans, of Sec., p. 56. 

 Hymenocaris n. g., H. vermicauda n. sp. Asaphus selwynii n. sp. 



On a few genera of Irish Silurian fossils. 



In Kep. 22d Meeting Brit. Assoc. Adv. Sci., 1852, Trans, of Sec., p. 59. 

 Stygina n. g. Cyphoniscus n. g. 



1. With head spines short: Stygina latifrons Portl., A. marginatum Portl. 



2. With head spines long: Stygina murchisoni Murch. 



Cyphoniscus socialis n. sp. Acidaspis jamesii n. sp. ^Eglina mirabilis 

 n. sp. Remopleurides dorsospinifer Portl. Cyphaspis megalops McCoy. 



and Forbes (Edward). Figures and descrip- 

 tions illustrative of British organic remains. Decade 2. 



In Mem. Geol. Survey United Kingdom London, 1849, 10 pis. 

 Parabolina n. g. Brachampyx (Forbes) n. g. 



