INDEX. 
463 
Phylactella, characters of the new 
genus, 101. 
Picromerus, new species of, 48. 
Plectronella, description of the new 
genus, 17. 
Plesiosauriads, ou some, from the 
Upper Jurassic strata, 458. 
Pleurodon affiuis, note on, 93. 
Plusia, new species of, 232. 
Pcecilodryas, new species of, 313. 
Poikilopleuron Bucklandi, note on, 
31G. 
Polyporus, new species of, 209. 
Polyzoaof the Bay of Naples, on the, 
28, 114,192, 267 ; ou some genera 
of semiparasitic, 133 ; on the clas¬ 
sification of the British, 153. 
Prionapteryx, new species of, 340. 
Prionolomia, new species of, 128. 
Protista, on a new genus of, 320. 
Pycnogon, on a new genus of, 281. 
-littorale, on a variety of, 283. 
Pyralis, new species of, 331. 
Rallus, on the occurrence of a species 
of, in the island of Aldabra, 164. 
Rat, on some parasites of the, 457. 
Reptiles, new, 85, 217; on a new 
order of extinct, 175. 
Reticulipora, new species of, 278. 
Rhabdophora, on the geological dis¬ 
tribution of the, 245, 449. 
Rhaphidistia, new species of, 300. 
Richiardi, Prof. S., on the eye in the 
Cephalopoda, 243. 
Ritsemia, description of the new 
genus, 455. 
Rotalia spiculotesta, observations on, 
414. 
Samus, new species of, 350. 
Saporta, G. de, on the new palaeozoic 
plant-group Dolerophvllete, 170. 
Sauranodonta, on the new order, 
175. 
Sauvage, H. E., on some Plesio¬ 
sauriads of the Upper Juras¬ 
sic strata of Boidogne-sur-Mer, 
458. 
Schizoporella, new species of, 157. 
Schmidt, O., on Loxosoma, 393. 
Scoliorliaphis, description of the 
new genus, 306. 
Scoparia, new species of, 333. 
Seeley, Prof. II. G., on the Dinosauria 
of the Cambridge Greensand, 
237. 
Sertularella, new species of, 100. 
Sertularia, new species of, 103. 
Sharpe, R. B., on two new species of 
birds, 313. 
Shrubsole, G. W., on the British 
Carboniferous P'enestellidoe, 317. 
Silis, new species of, 380. 
Slater, II. II., on a new genus of 
Pycnogon and a variety of Pycno¬ 
gon um littorale, 281. 
Smilodon, on the dentition of, 95. 
Smittia, characters of new genus, 
160. 
Sobokin, N., on a new genus of the 
group Protista, 320. 
Solenopus, new species of, with ob¬ 
servations on their organization, 
321. 
Sollas, W. J., on a new genus and 
species of Ecliinonematous sponge, 
17 ; on the genus Catagma, 169 ; 
on a new genus and species of 
Renierid sponge, 404. 
Spencebatea, characters of the new 
genus, 67. 
Spirula australis, on the anatomy of, 
Sponges, new, 17, 141, 169, 284, 
304, 343, 361, 404. 
Squamulina, observations on, 411. 
Stagmatophora, new species of, 437. 
Steganoptycha, new species of, 341. 
Stellettinopsis, description of the 
new genus, 348. 
Suberites, new species of, 345. 
Tapeworms, on the development and 
metamorphoses of the 317. 
Terias, new species of, 189. 
Tethyopsis, description of the new 
genus, 311. 
Tetrarhynchus, description of a new, 
176. 
Thompson, D’Arcy W., on Ilydroid 
Zoophytes from Australia and New 
Zealand, 97. 
Thuiaria, new species of, 111. 
Tinea, new species of, 417. 
Titanosuchus ferox, notice of, 239. 
Toula, Dr. F., on the classification of 
the Dactyloporida, 151. 
Trachycladus, description of the new 
genus, 343. 
Trametes, new species of, 210. 
Trikentrion, new species of, 294. 
Triticella, observations on the genus, 
133. 
Velinus, new species of, 131. 
Yolvox dioicus, on the germination 
of the spores of, 93. 
