INDEX. 
horned Ruminants, 221; observations on 
Hylobates leucogenys, 303. 
Ophioglossez, 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, 481. 
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, 
Paleontology, 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 Mollusks, 511. 
Payen, M., on the chemical composition 
of woody substances, 140. 
Peneus siphonaria, description of, 97. 
Pentacerotide, 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 gemme 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. 
Restiacez, characters of some new genera 
and species of, 45, 
Richardson, Dr., remarks on a collection 
of fishes, 306. 
535 
Rock-salt, on the Infusoria in, 76. 
Rocks, striated and polished by glaciers, 
505. s 
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- 
nacee, 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. 
Sigillarie, 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. 
Spheronites, 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. 
Striz on rocks, caused by glaciers, 505. 
