INDEX. 



519 



faction of organized bodies in the 

 existing seas, 511. 



Megastigmus, new species of, 39. 



Melania, new species of, 58, 142. 



Melaniana, on a new genus of the 

 family, 58. 



Melolontha vulgaris, on a monstrosity 

 observed in, 240. 



Meteorological observations, 79, 159, 

 247, 359, 439, 514. 



Miers, J., on the affinities of the 01a- 

 cacea3, 1 28 ; on the affinities of the 

 Icacinaceae, 218 ; on some genera 

 of the Icacinaceae, 387, 481. 



Mirafra, new species of, 346. 



Mitchell, W., on the correspondence 

 between the angles formed by the 

 veins of the leaves, and those formed 

 by the branches of the stem, 70. 



MoUusca, on the organ of smell in 

 gasteropodous, 155; rare Irish, 157, 

 356 ; on Prof. Loven's homologies 

 of the, 215. 



Monodontomerus, new species of, 43. 



Moore's, T., Popular History of Bri- 

 tish Ferns, noticed, 141. 



Moquin-Tandon, M., on the organ of 

 smell in the fluviatile and terrestrial 

 gasteropodous MoUusca, 155. 



Mould, growth of various kinds of, in 

 syrup, 236. 



Miiller, Prof., on the development of 

 mollusks in Holothuriae, 23, 103. 



Miiller, Dr. H., on the male of the 

 Argonaut and the Hectocotylus, 

 492. 



Musci, on the reproduction and de- 

 velopment of the, 443. 



Mushroom, twin, notice of a, 435. 



Neriene, on the British species of, 

 19,268. 



Notomis Mantelli, description of, 231, 

 234. 



Nucleolites, on the British oolitic 

 species of, 297. 



Nymphaea ampla, notice of, 151. 



Obituaries — Mr. Samuel Veall, 79; 

 William Thompson, 246; H. N. 

 Turner, jun., 359. 



Olacacese, on the affinities of the, 



128. 

 Otto, E., on Victoria regia, 351. 

 Owen, Prof., on the cranium of the 



large species of Dinornis, 149. 

 Pachychilus, characters of the new 

 genus, 58. 



Pachygnatha, on the British species of, 

 466. 



Pagellus centrodontus, notice of, 154. 



Palaeornis, new species of, 500. 



Palmon, new species of, 42. 



Panolia, on the species of, 420. 



Panus, new species of, 194. 



Pelopaeus, new species of, 47- 



Penelope, new species of, 501. 



Pennantia, observations on the genus, 

 484. 



Peziza, new species of, 201. 



Phanerogamia, on the reproduction of 

 the, 441 ; on the fertilization of, 

 448. 



Plants, localities for rare British, 12, 

 150, 238; tables illustrative of the 

 morphology of, 71 ; results of some 

 experiments relative to the growth 

 of alpine, 238 ; on the number of 

 known fossil, 504. 



Pleurosigma, descriptions of the Bri- 

 tish species of, 1. 



Polyporus, new species of, 195. 



Polyzoa, notes on some Scotch, 403. 



Poraqueiba, observations on the ge- 

 nus, 481. 



Prosopis, new species of, 50. 



PteromaUdse, on the generation of an 

 hymenopterous insect of the family 

 of the, 461. 



Pupa, new species of, 275. 

 Pygaster, on the British oohtic spe- 

 cies of, 89. 

 Pygurus, on the British oolitic species 



of, 311. 

 Pyrosoma, on the anatomy and phy- 

 siology of, 242. 

 Quatrefages, A. de, on the circulation 

 and respiration of the AnneHda, 

 154 ; on the general cavity of the 

 body of invertebrate animals, 157. 

 Rape crops, on the insects injurious 



to the, 356. 

 Raphiostylis, on the species of, 390. 

 Reptiles, discovery of the remains of 

 several orders of, in the Old Red 

 Sandstone and shales of Scotland, 

 76. 

 Rhizocarpeae, on the reproduction and 



development of the, 447. 

 Rhynchonella, observations on the 

 genus, with descriptions of new spe- 

 cies, 249. 

 Royal Institution, proceedings of the, 

 506. 



