INDEX. 



rsr> 



homed Ruminants, 221 ; observations on 

 Hylobates leucogenys, 303. 

 Ophioglosseae, on the mode of growth of, 

 62. 



Oplegnathus, new genus of Fish, 307. 

 Orthagoriscus oblongus, remarks on a 



specimen of, 144 ; Mola, 522. 

 Osmoderma, on the genus, 4S1. 

 Ostracion, new species of, 308. 

 Ostracopoda, description of a new genus 



of, 94. 



Ovis, monograph of the species of, 302. 



Owen, Prof. R., on the soft parts and on 

 the shape of the hind-fin of the Ichthyo- 

 saurus, 62 ; .on fossil remains from the 

 London clay, 64 ; on the anatomy of 

 the Biscacha, 68 ; on the Lepidosiren, 

 466 ; on a dipterous larva, 483 ; on 

 fossil animals, 491. 



Pagurus, on the metamorphoses of, 92, 

 264, 



Palaeontology, 491. 



Palms, on the origin and direction of the 



woody fibre in the stems of, 57. 

 Paradisea apoda, on the habits of, 150. 

 Parthenia, new genus of Moliusks, 511. 

 Payen, M., on the chemical composition 



of woody substances, 140. 

 Peneus siphonaria, description of, 97. 

 Pentacerotidae, synopsis of the genera 



and species of, 275. 

 Phanerogamic plants, generation in the, 



426. 



Pheasants, on hybrid, 73. 

 Pheidole, a new genus of Ants, 87. 

 Philippi, Dr. A., zoological notices, 89. 

 Physophores, notice respecting, 156. 

 Plantes cryptogames de France, noticed, 

 146. 



Plants, on spiral formations in the cells of, 

 35 ; on the nutrition and growth of, 

 136; on the structure of the hairs on 

 the pericarp of some, 257 ; generation 

 in, 426. 



Polycera, Mr. Alder on, 337. 



Polygonum viviparum, on the gemmae of, 

 55. 



Pontarachna punctulum, description of, 98. 

 Prionites, 417. 



Psamathe, characters of the genus, 96. 

 Pteropus Assamensis, 368. 

 Puffinus Anglorum, occurrence of, 73. 

 Pulsation in Mollusca, 339, 341. 

 Pupina, remarks on the genus, 77. 

 Raia, species of, from the coast of Ire- 

 land, 405. 



Rathke, H., on the history and develop- 

 ment of the Decapod Crustacea, 263. 



Restiaceae, characters of some new genera 

 and species of, 45, 



Richardson, Dr., remarks on a collection 

 of fishes, 306. 



Rock-salt, on the Infusoria in, 76. 

 Rocks, striated and polished by glaciers, 

 505. 



Rodent, on a new species of, 220. 



Rotifer vulgaris, 345. 



Royal Society of Edinburgh, 519. 



Ruminants, monograph of the hollow- 

 horned, 221. 



Russell, F., occurrence of Saxifraga um- 

 brosa in Ireland, 313. 



Sadler's, J., Flora comitatus Pesthinensis, 

 noticed, 313. 



Salicaria luscinioides, 525. 



Salmo Umbla, on, 439. 



Salt-marshes, on the red colour of, 317. 



Sap, generative, M. Mirbel on, 330. 



Saxifraga umbrosa, on the occurrence of, 

 in Ireland, 314. 



Saxifrages, Kerry, Rev. W. T. Bree on 

 the, 401. 



Schleiden, Prof. J., on spiral formations 

 in the cells of plants, 35 ; conspectus 

 of the genera and species of the Lem- 

 nacea?, 259. 



Schomburgk, Mr., notice respecting, 318. 



Sciurus dimidiatus, description of, 304. 



Scolia fulva, on, 482. 



Seal of the Farn Islands, 462. 



Selby, P. J., on the Great Seal of the Farn 

 Islands, 462. 



Serpent, description of the fossil remains 

 of a, 64. 



Shells, catalogue of, from the Crag, 243 ; 



on some new species of, 317. 

 Shuckhard, W. E., on Scolia fulva, 482. 

 Sigillariae, 389. 



Silurus Singio, Mr. Wyllie on, 509. 

 Sinapis Cheiranthus, notice respecting, 

 314. 



Smith, J., on the arrangement and defi- 

 nition of the genera of Ferns, 297. 



Snipe, red-breasted, notice respecting the, 

 236. 



Solenopsis, description of the new genus, 

 86. 



Sowerby's English Botany, noticed, 313. 



Sphaeronites, remarks on, 12. 



Spiders, on the number of eyes in, 229 ; 



trap-door, 479. 

 Spiral formations in the cells of plants, 



observations on, 35. 

 Spirodela, description of the new genus, 



262. 



Spongilla fluviatilis, on the insect of, 315. 

 Sprengel, C, on the mode of action of 



manures, 269. 

 Squirrel, new species of, 304. 

 Star-fishes, synopsis of the genera and 



species of, 178. 

 Stibara, description of the new genus, 300. 

 Stigma, on the structure of the, 51. 

 Striae on rocks, caused by glaciers, 505. 



