1 N D E X. 



50'i 



l\cciloptera, new species of, 30. 



Pollicipes, on the occurrence of, in the 

 Oxford clay, 30. 



Polyjics, observations on some, 69. 



i'onthicva, new species of, 385. 



I'ortlock, Cai)t., on the ova of the large 

 Slotted ilog-fish, 2(il, 345; on the 

 genus Caniinia, 343, 



I'rcscottia, new species of, 386. 



Priapulus, new British species of, 272. 



Fricliard, Dr., on the crania of the Lap- 

 landers and Flnlanders, 287. 



Prinia, new species of, 126. 



Prionidic, new genus of, 108. 



Quatrefages, M. de, on the anatomy of 

 some Mollusca nudibranchiata, 2. 



Quekett, E. J., on the examination of 

 some fossil woods, 495. 



Rafllesiacea', on a new genus of, 191. 



Ralfs, J., on the British Desmidiea;, 149, 

 401. 



Ranella, new species of, 360. 



Rats of Nepal, descrijjtions of the, 266. 



Rays, on the existence of an electric ap- 

 paratus in, 121, 122. 



Reckitt, W., on the preser\"ation of ob- 

 jects of natural history for the micro- 

 scope, 242. 



Reeve, L.,on the genus Myadora, 61 ; on 

 new species of Tritons, 199; on new 

 species of Ranella, 360 ; on new species 

 of Area, 355 ; on new species of Mitra 

 and Cardium,475. 



Reid, Dr., observations on some Polypes, 

 69. 



Rhinolophus, new species of, 466. 



Rhizantheffi, observations on the, 190. 



Richardson, J., generic characters of Gas- 

 terochisma nielampus, 346. 



Riugicula, new species of, 123. 



Rissua, new species of, 315. 



Robert, E., on the occurrence of the 

 Anoplotherium in the lowest layers of 

 the tertiary period of the Paris basin, 

 141. 



Royal Institution, proceedings of the, 210. 



Royal Society, proceedings of the, 277. 



Roval Societv of Edinburgh, proceedings 

 of the, 121. 



Rubus, on three new British species of, 

 305. 



Sali.x, observations on some British spe- 

 cies of, 276. 



Salter, T. B., on three new species of 

 Rubus, 305. 



Santalum, on the ovulum of, 196. 



Sapria, characters of the new genus, 191. 



Scenedesmus, on the British species of, 

 401. 



Schomburgk, Sir R. 11., on the geology 

 of British Guiana, 137. 



Scotland, on some rarities found on the 



west coast of, 327. 

 Scylliiini Calulus, on the ova of, 261 , 345. 

 Sedum anii>le.xicaule, on the formation of 



ai'-rial tubers in, 408. 

 Seller, Dr., on the nutrition of plants, 



350. 

 Semnopitheci, observations on some spe- 

 cies of, 452; on two new sjjecics of, 497. 

 Serjientaria, characters of the new genus, 



377. 

 Shells, new, 46, 50, 61. 123, 133, 135, 



199, 250, 315, 355, 360, 363,374, 431, 



435, 475. 

 Shrews of Nepal, descriptions of the, 266. 

 Siehold, Dr., on the metamorphoses of the 



Strepsiptera, 293. 

 Silphodes, new species of, 440. 

 Simiadaj, notes on various, with descrip- 

 tions of new species, 449,497. 

 Smith, J., on the geology of Ciihraltar, 67. 

 Smyth, W. W., on the geology of the 



country round the mines of the Taurus, 



212. 

 Solarium, new species of, 374. 

 Soiidcr, W., on some British species of 



willows, 276. 

 Sorcx, new species of, 269. 

 Sowerby, G. B., on new species of Vo- 



luta, 135. 

 Spiders, on the means by which they 



walk on the vertical surfaces of highly 



polished bodies, 115. 

 Spiral vessels, on the structure of, 495. 

 Spirula, on the animal of, 257, 444. 

 Sponge, description of a new genus of, 



297. 

 Spongilla fluviatilis, remarks on the, 284. 

 Stark, Dr., on the existence of an electric 



ajjparatus in the flapper-skate and other 



rays, 121. 

 Staurastrum, on the British species of, 



149. 

 Stelis, new species of, 385. 

 Stenorhyncltus, new species of, 386. 

 Sterna leucoptera, occurrence of, in Bri- 

 tain, 271. 

 Stomata, on the penetration of the cuticle 



into the, 217. 

 Strepsiptera, on the metamorphoses of the, 



293. 

 Strickland, H. E., on some new species of 



birds from \Vestern /Vfrica, 125; on 



Cvanocitta, a proposed new genus of 



Garruliua;, 260, 342. 

 Syllis, on the British species of, 145, 

 Synhvdra, observations on the genus, 



244. 

 Syrin.\, new British species of, 272. 

 Syrinx papillosus, notice respecting, 329. 

 Taphozous, new species of, 472. 



