INDEX. 



527 



Orbitulites, new species of, 21, 

 Orobanche, remarks on some species of, 



108. 

 Orthagoriscus Mola, notice of the capture 



of, n. 



Orthogonys, new species of, 421. 



Orthotrichum, new British species of, 276. 



Ortyx (Virginiana), occurrence of, in 

 Norfolk, 405 ; new species of, 476, 513. 



Owen, Prof., on the anatomy of a female 

 Orang-utan, 512. 



Ovules, on the origin of, 494. 



Partridge, description of a new species 

 of, 305. 



Patrick, J. S., on the fossil vegetables of 

 the sandstone of Ayrshire, 283. 



Peach, C. W., on the nidi of Purpura la- 

 pillus and of Buccinumreticulatum, 203. 



Pectunculus, new species of, 134, 388. 



Peltidea spuria, remarks on, 30. 



Peltophyllum, description of the new 

 genus, 217. 



Penelope, new species of, 475. 



Peziza, new species of, 355. 



Pholidophorus, new species of, 151. 



Phycologia generalis von Kiitzing, re- 

 viewed, 61. 



Phyllodia, description of the new genus, 

 224. 



Phylloscopus, new species of, 178. 



Pinus Mughus, notice respecting, 130. 



Pipra, new species of, 473. 



Pistil, observations on the structure of 

 the, 494. 



Pitta, new species of, 410. 



Plants, on the influence of various cir- 

 cumstances upon the action of, 65 ; on 

 the movements of, 294 ; on the move- 

 ment of the latex of, 441. 



Platops, description of the new genus, 

 266. 



Pleurotoma, new species of, 132, 136. 



Pluraatella, new species of, 330. 



Polistes, observations on the genus, 521. 



Polydesmus, new species of, 265. 



Potamomya, new species of, 232. 



Pratincola, new species of, 410. 



Primula vulgaris, on a monstrosity of 

 the pistil of, 464, 



Prismatocarpus Speculum, on the fruit 

 of, 294. 



Procellaria Pelagica, habits of the, 94. 



Procellaridae, observations on the family, 

 with descriptions of new species, 360. 



Psammetichus, new species of, 54. 



Psittacus, new species of, 475. 



Pteronaxcys regalis, on the existence of 

 branchiae in the perfect state of, 21. 



Puffinus, new species of, 365. 



Purpura lapillus, on the nidi of, 203. 



Pycnonotus, new species of, 411. 



Quatrefages, M., on the propagation of 

 the genus Syllis, 235. 



Radiata, descriptions of new, 517. 



Ralfs, J., on the British Desmidiea;, 375 ; 

 on the British species of Grammonema 

 and Eunotia, 457 ; on the British spe- 

 cies of Achnanthes, 489. 



Rallus Crex, on the habits of, 93. 



Ray Club, notice respecting the, 63. 



Recluz, M., on new species of Nerita, 

 385. 



Reeve, L., on some new species of shells, 

 132,388,406, 515. 



Rhinolophus, new species of, 73, 303. 



Rhynchites, observations on the British 

 species of, 81. 



Richardson, J., on a new genus of gobioid 

 fish, 461 ; on a new Chinese fish, 462. 



Rissoa, descriptions of new British spe- 

 cies of, 323. 



Robertson, A., on freshwater fossils from 

 the oolitic coal-field of Brora, 146. 



Robertsonian Saxifrages, on the ditFerence 

 between those of Ireland and of the 

 Pyrenees, 465. 



Robinet, M., on the secretion of silk, 236. 



Rook, on the habits of the, 92. 



Royal Institution, proceedings of the, 

 310. 



Royal Society of Edinburgh, proceedings 

 of the, 65, 128. 



Rubi, observations on the British fruti* 

 cose, 482. 



Sagitta, on the structure and propagation 

 of, 1. 



Salwey's, Rev. T., list of lichens gathered 

 in Wales, 25, 260. 



Saxifrages, observations on Irish, 465. 



Scalaria, new species of, 478. 



Schizocerus, new species of, 520. 



Schlegel, Dr., on the development and 

 propagation of serpents, 157. 



Schnizlein's Iconographia, noticed, 292. 



Schultz's, M., theory of the movements of 

 the latex, observations on, 441. 



Scolopendra, new species of, 96. 



Scolytus, destruction of trees by, 75. 



Seeds, on the vitality of, 89. 



Semionotus, new species of, 151. 



Serpents, on the development and propa- 

 gation of, 157. 



Shells, new species of, 70, 130, 132, 136, 

 221, 228, 295, 306, 385, 388, 406, 468, 

 471, 473, 478, 515 ; on the microsco- 

 picaj structure of, 486. 



Silk, on the secretion of, 236. 



Solen, new species of, 471. 



Sowerby, G. B., jun., on some new spe- 

 cies of Lima, 71 ; on new species of 

 Cyclostoma, 130, 295 ; on a new spe- 

 cies of Chiton, 473. 



