INDEX TO THE PROCEEDINGS. 



PerrMt fragilis, 189. 



Lusitanica, 189. 



polita, 190. 



Petaloconchus Domingensis, 51. 



Pinnularia , 332. 



Plectrolepis, Sir P. G. Egerton on the 



genus, 3. 

 Pleurotoma consors, 50. 



Haitense, 50, 



Henikeri, 50. 



-— — Jaquense, 51. 



venustum, 50. 



Polycystina , 332.- 



Portugal, list of organic remains found 



in the secondary strata of, 170. 

 , Mr. D. Sharpe on the hippurite 



limestone of, 139. 



, , on the Jurassic series of, 



156. 

 , , on the secondary rocks of, 



135. 

 , , on the species of Nerinsea 



found in, 101. 



, , on the subcretaceous series 



of, 141. 

 Post-eocene seas, extent of, noticed, 



•xxxix. 

 Prestwich, Mr. J., on the English ter- 



tiaries, noticed, liv. 



, on the structure of the strata be- 

 tween the London clay and the chalk, 



252. 

 Ptygmatis, list of species of, 108. 

 — — , Mr. D. Sharpe on the subgenus, 



104. 

 Pustulopora Zealandica, 331. 

 Pyramidellal sngittata, 193. 

 Pyrenees, volcanic rocks of the, noticed, 



xlviii. 

 Pyrula consors, 49. 



Pyxidicula , 332. 



Relation between the strike of the strata 



and the axis of the Alps, noticed, xlix. 

 Report, Annual, i. 



of the Library Committee, ix. 



of the Museum Committee, iii. 



Rocca ]\Ionfina, noticed by Sir R. I. 



Murchison, 300. 

 Rostellaria Costce, 193. 

 Ruxton, Lieut. G. F., on the volcanic 



rocks of Northern Mexico, 251. 

 St. Paul, island of, noticed by Sir C. 



Lyell, 221. 

 Santorin, noticed by Sir C. Lyell, 215. 

 Scotland, Mr. J. Nicol on the Silurian 



rocks of the south-east of, 53. 

 Secondary rocks of Portugal, 135. 

 Sharpe, Mr. D., on the genus Nerinaea, 



101. 

 , on the secondary district of Por- 

 tugal, north of the Tagiis, 135. 



Sigillaria, and some accompanying 

 spores, noticed by Mr. E.W. Binney, 

 17. 



Silurian rocks of south-eastern Scot- 

 land, 53. 



Sismonda, Prof. E., on the discovery of 

 a skeleton of Mastodon angustidens 

 near Asti, in Piedmont, 252. 



Smith, Mr. J. (of Jordan Hill), on the 

 occurrence of marine shells in strata 

 below the Till, 386. 



, on the shells of the Till near Wick, 



386. 



Soffioni of Tuscany, noticed by Sir R. L 

 Murchison, 367*. 



Solarium quadriseriatum, 51. 



Spain, the geology of, 406. 



Spirifer Beirensis, 191. 



Spondylus bifrons, 53. 



Stauroneis Zealandica, 332. 



Stevenson, Mr. W., on a gap in the grey- 

 wacke formation of the Eastern Lam- 

 mermuirs filled by old red conglome- 

 rate, 419. 



Stowe, Mr. W., on a cutting in the rail- 

 way near Buckingham, 135. 



Strickland, Mr. H. E., on a section of 

 Leckhampton Hill, 239. 



Strombus ambiguus, 48. 



■ bifrons, 48. 



Haitensis, 48. 



proximus, 48. 



Subcretaceous series of Portugal, 141. 



Subsidence of sea-bottoms, noticed, liii. 



Surrirclla , 332. 



Swindon, oolitic beds at, noticed by Mr. 

 R. A. C. Austen, 464. 



Sydney coal-field, Mr. R. Brown on the 

 lower coal-measures of the, 115. 



Taranaki, infusorial earth of, 332. 



Tellina Sobralensis, 190. 



Terebra bipartita, 47. 



inaequalis, 47. 



obconica, 194. 



sulcifera, 47. 



Terebratula Beirensis, 192. 



Gualteri, 329. 



Tertiaries of the Moray Firth and the 

 great Caledonian valley, the Rev. J. 

 G. Cumming on the, 10. 



Tertiary strata in the island of San Do- 

 mingo, Mr. J. C. Moore on some, 39. 



Tertiary strata, Mr. J. Prestwich on the 

 lower, 252. 



Tertiary strata and their dislocations 

 in the neighbourhood of Blackheath, 

 the Rev. H. M. De la Condamine on 

 the, 441. 



Textularia , 330. 



aciculafa, 330. 



elongnta, 330. 



