INDEX. 



49t 



Nematode worms, on the retrograde 

 metamorphosis of certahi, 4f^l. 



Neriene, uew British species of, 436. 



Nerita, new species of, 288. 



Newton, A., on some hybrid ducks, 

 138; on a new species of GaUinula, 

 417. 



Norman, Rev. A. M., on an Echino- 

 derm new to science, 112 ; on the 

 discovery of Ph} sa acuta in Eng- 

 land, 114. 



Notiomimus, description of the new 

 genus, 15. 



Nucula, new species of, 120. 



Nudibranchiate Mollusca, on some 

 points in the economy of the, 33. 



Odontophorus, new species of, 149. 



Odostomia, new species of, 42, 298. 



Ostrea, new fossil species of, 117. 



Ovis Polii, note on, 227. 



Owen, Prof., on the cerebral charac- 

 ters of Man and the Ape, 456. 



Oxybeles gracilis, on the habits of, 

 340. 



Parthenia, new species of, 42. 



Pasteur, L., on the mode of nutrition 

 of the Mucedineae, 151; on infuso- 

 rial animalcules living without free 

 oxygen, 343. 



Patellaria, new British species of, 

 450. 



Paussus lineatus, on the identity of, 

 with P. Parrianus, 459. 



Pecten, new species of, 118. 



Peltogaster, observations on the ge- 

 nus, 47. 



Perna, new species of, 121. 



Peronospora, new species of, 449. 



Peters, Dr. W., on Taphrometopon 

 lineolatum, 481. 



Peziza, new British species of, 449. 



Phacidiuni, new species of, 451. 



Phalangiidse, on the British species of, 

 353. 



Phaleria, new species of, 246. 



Pholadomva decussata, on a variety 

 of, 122.' 



Physa acuta of Draparnaud, on the 

 occurrence of, in England, 114. 



Pithecia, new species of, 152. 



Plcctopylis, note on a species of, 244. 



Pleurotomaria, new species of, 291. 



Polyporus.new British species of, 379. 



Polythalaraia, on the organization 

 and reproduction of the, 306. 



Pseudostene, description of the new 

 genus, 247. 



Pteioceras, new species of, 281. 



Pterocyclos, on the animal of, 196. 



Pterodonta, new species of, 282. 



Pupinella, on the animal of, 196. 



PyraraideUidse, on new species of, 

 from Japan, 41, 295. 



Pyrula, new species of, 283. 



Reeve, L., on the history, synonymy, 

 and geographical distribution of 

 the recent Terebratula^, 169, 443; 

 on the synonymy of the species of 

 Cymbium, 268. 



Reinhardt, Prof., on the affinities of 

 Balaeniceps, 144. 



Reptiles from Bahia, on some, 412. 



Rhinocylhis, new species of, 102. 



Rhizoctonia, new British species of, 

 455. 



Rhizopoda, on the reproductive ele- 

 ments of the, 360. 



Royal Society, proceedings of the, 

 322, 407. 



Rusa japonica, on the, 142. 



Sacculina Carcini, observations on, 48. 



Salvin, O., on new reptiles from Gua- 

 temala, 325. 



Saturnia, on a hybrid, 150. 



Scalaria, new species of, 286. 



Schultze, Prof. M., on the genus Cor- 

 nuspira, and on the organization 

 and reproduction of the Polythala- 

 mia, 306. . 



Sciurus, new species of, 490. 



Sclater, Dr., on the Rusa japonica, 

 142; on the Ovis Pohi of Blyth, 

 227 ; on new species of American 

 birds, 327 ; on new species of He- 

 teropelma, 487. 



Seeley, H., on some new upper 

 gi-eensand bivalves, 116; on the 

 red limestone of Hunstanton, 

 233 ; on new Gasteropods from the 

 upper greensand, 281 ; on a new 

 order of Echinoderms, 365. 



Seila, description of the new sub- 

 genus, 131. 



Septonema, new British sijecies of, 

 381. 



Septoria, new British species of, 380. 



Sipunculi, on the anatomy of the, 486. 



Solarium, new species of, 286. 



Sphaeria, new British species of, 452. 



Spiders, new, 20, 353, 428. 



Stagetus, description of the new ge- 

 nus, 11. 



Stimpson, W.,on the genus Bipahum, 



