INDEX. 



471 



Mortonia, characters of the new ge- 

 nus, 448. 

 Mosses, on the process of fecundation 



in, 318. 



Murchisonia, new species of, 191. 

 Myi-mica, new species of, 442. 

 Myrmica domestica, on a means of 



preparing skeletons of small animals 



by the industry of, 457. 

 Naiades, Lea's Synopsis of the Family 



of, reviewed, 136. 

 Nassa, new species of, 308. 

 Natica, new species of, 30/. 

 Natural History Collections at the 



British Museum, 392. 

 Newport, G., on the genus Anthopho- 



rabia, 303. 

 Nicholson, Dr. B. A. R., on Bdellium, 



222. 

 Nisus, new species of, 461. 

 Nostoc, on the occurrence of an eat- 

 able, 301. 

 Nymphaca alba, var. major, 157. 

 Oidemia perspicillata, notice concern- 

 ing, 72. 

 Ommastrephes todarus,on the nervous 



system of, 1. 

 Onchidium, on £^ species of, 290. 

 Oouops, on the British species of, 



252. 

 Operculina Arabica, on the form Jind 



structure of the shell of, 161 

 Orchis, on the embryogeny of, 238. 

 Orchis mascula, on a variety of the, 



65. 



Ornithological notes, 69. 

 Oswell, W., on a venomous fly of 



Southern Africa, 463. 

 Owen, Prof., on a new species of Pte- 



rodactyle, 378. 

 O.tycladus, observations on the genus, 



293. 

 Oxvtheca, observations on the genus, 



292. 

 Pachyderraata, on fossil, in Canada, 



395. 

 Palajontology of the Isle of Wight, 



contributions to the, 87. 

 Papilio, notes on some species of, 



t443. 

 entamerus, new species of, 426. 

 rerilampus, new species of, 45. 

 Phsenodon, characters of the new ge- 

 nus, 52. 

 Philibert, M. H., on the process of 

 fecundation in mosses, 318. 



Philodromus, on the British species 



of, 96. 

 Pipe-fish, capture of two species of, 



294. 

 Pipilopsis, new species of, 364. 

 Pipra, new species of, 365. 

 Pipraeidea, new species of, 364. 

 Planaxis, new species of, 307. 

 Plants, localities for rare British, 19, 



65, 7G, 157, 316; on the presence 



of fluorine and iodine in various, 



228, 231 ; on keeping marine, alive 



in unchanged sea-water, 263; on the 



flowering of Alpine and Arctic, im- 

 mediately on the disappearance of 



the snow, 461. 

 Platea, on the affinities of the genus, 



108; new species of, 110. 

 Pleurotoraaria, new species of, 1 90. 

 Polyzoa, on the priority of the term, 



for the Ascidian Polypes, 352. 

 Pritchard's, A., History of Infusorial 



Animalcules, reviewed, 134. 

 Ptenosaura, characters of the new 



genus, 438. 

 Pterodactyles of the chalk formation, 



on the, 372, 378. 

 Purpura, new species of, 308. 

 Reinhardt, J., on Cai'terodon sulci- 



dens, 417. 

 Reptiles, new genera of, 437 ; on the 



temperature of, 464. 

 Rissose, on some undescribed animals 



of the British, 264 ; new arrange- 

 ment of British, 358. 

 Roxburgh, the late Dr. W., on the 



Aquilaria Agallocha, or aloe-wood 



tree of commerce, 221. 

 Royal Institution of Great Britain, 



proceedings of the, 69. 

 Roval Society, proceedings of the, 



225, 455. 

 Sabal umbraculifera, analysis of, 63. 

 Salmon, on the artificial introduction 



of a breed of, into the river Swale, 



461. 

 Salticus, on the British species of, 



94. 

 Sanguinolites, new species of, 189. 

 Sarcostigma, on the structure and 



affinities of the genus, 112; new 



species of, 117. 

 Sauresia, on the new genus, 281. 

 Saurophagus, new species of, 453. 

 Savignia, on the British species of, 



253. 



