194 CALIFORNIA ACADEMY OF SCIENCES. 



Trinucleus lloydii Murch. 



Seel. 1, T. lloydii '^Inxch.. 2, T. concenMciis Yj&ion, y&rs. junior, car- 

 aclaci, portlocM, elongatus, faviis, goldfussii Barr. 3, T. thersites n. sp. 



Sec. 2. Tretaspis. 4, T. seiicornis His. 5, T. Jimhriatus Murch. 6, T. 

 radiatus Murch. Remojileurides colbii Portl., R. laterispinifer Portl., R. 

 dorsoftpinifer Portl. 



Sec. 1. Remopleurides, Ghabella furrows qi;ite obsolete. R. platyceps 

 McCoy, R. obtusus n. sp. 



Sec. 2. Caphyra, Glabella moderate, uot inflated, with three pairs of 

 furrows. R. (Caphyra) radians Barr. 



('liphoniscus socialis Salt. ^Eglina mirahiUs Forbes, ^. major n.sf). 



On some new Crustacea from the uppermost 



Silurian rocks, by J. W. Salter. With a note on the 

 structure and affinities of Himantopterus, by T. H. 

 Huxley. 



In Quart. Jour. Geol. Soc. London, vol. 12, 1856, pi. 26, figs. 1-7. 



Himantopterus n. g., H. bilobus n. sp., H. maximus n. sp., H. lanceolatus 

 n. sp., IT. pe7-or7iatus n. sp., ff. acinninatus u. sj)., H. banksii n. sp. 

 Ceratiocaris. 



Description of the Crustaceans from the up- 



permost Silurian rocks near Lesmahago. (■') 



In London, Edinb., Dublin Philos. Mag., vol. 11, 1856, p. 8.S. 

 Himantopterus. 



On the great Pterygotus (Seraphim) of Scot- 



land and other species. 



In Eep. 26th Meeting Brit. Assoc. Adv. Sci., 1856, Trans, of Sec, p. 75. 



On fossil remains in the Cambrian rocks of 



the Longmynd and North Wales. 



In Quart. Jour. Geol. Soc. London, vol. 12, 1856, p. 246. 

 Pakeojjyge n. g., P. ramsayi n. sp. 



On two Silurian species of Acidaspis from 



Shropshire. 



In Quart, Jour. Geol. Soc. London, vol. 13, 1857, p. 210, pi. 6. 

 Acidaspis coronata n. sp., A. caractaci Salt. 



On some new species of Eiirypterus. With 



note on the distribution of the species. 



In Quart. Jour. Geol. Soc. London, vol. 15, 1859, p. 229, pi. 10. 



Eurypierus symondsii n. sp., E. scouleri ?, E. pyg7nceus Salt., E. megalops 

 n. sp., E. aeuminatus n. sp., E. linearis u. sp., E. abbreviatus n. sp., E. 

 i-fmrarias u. sp. 



