INDEX. 
Nemertians, on the embryogeny of 
the, 301; anatomy of aremarkable 
type of the group, 371. 
Nicholson, Prof. H. A., on species of 
Hippothoa and Alecto, and on Au- 
lopora arachnoidea, 123; on new 
species of Polyzoa, 177. 
Norman, Rev. A. M., on new Zoo- 
phytes, 172. 
Norops, new species of, 280. 
Oceanic sediments and their relation 
to geological formations, on, 198. 
(Edanomerus, description of the new 
genus, 407. 
Ophidia, on the structure and deve- 
lopment of the teeth of, 155. 
O'Shaughnessy, A. W. E., on new 
species of Gobiide, 144; on the 
Anolide, 270. 
Ostracoda, on some Carboniferous, 
from Russia, 52. 
Pachyteles, new species of, 403. 
Packard, A. §., jun., on an unde- 
scribed organ in Limulus, 255. 
Paleoniscus, new species of, 311. 
Palinurus, new species of, 42. 
Paphia, new species of, 222. 
Paraclitopa, characters of the new 
genus, 407. 
Pascoe, F. P., on new genera and 
species of Coleoptera, 59 ; on new 
Asiatic species of Rhynchites, 
391. P 
Patellaria, new species of, 39. 
Pelagonemertes Rollestoni, on, 165. 
Penicillium, new species of, 34. 
Penthea, new species of, 72. 
Percis, new species of, 269. 
Periconia, new species of, 33. 
Pericopis, new species of, 340. 
Perissosoma, description of the new 
genus, 409. 
Peristethidion prionocephalum, on 
the habitat of, 371. 
Perrier, E., on the circulatory appa- 
ratus of the Echinida, 84. 
Peziza, new species of, 57. 
Pinaxia, on the genus, 300. 
Platystethus, new species of, 79. 
Pleurostoma, new species of, 416. 
Polychelide, characters of the new 
family, 152. 
Polypora, new species of, 355. 
Polyporus, new species of, 30. 
Polyzoa, on new Carboniferous, 43, 
333; new species of, 177. 
Pomatorhinus, new species of, 403. 
447 
Potamochcerus, on the skulls of the 
three species of, 45. 
Praonetha, new species of, 69. 
Primitia, new species of, 55. 
Pristipoma, new species of, 269. 
Protomyces, new species of, 56. 
Protorhopala, new species of, 68. 
Pseudorhombus, new species of, 81. 
Psilopezia, new species of, 39, 
Psycholupis, characters of the new 
genus, 67. 
Pteropoda, on the development of,489. 
Ptilodictya, new species of, 177. 
Ptosima, new species of, 411. 
Puccinia, new species of, 35, 
Purpura, new species of, 50. 
Radulum, new species of, 32. 
Reptilia, on the development of the 
teeth of, 153. 
Rhabdomeson, 
genus, 554, 
Rhizocepkala, on the embryogeny of 
the, 83. 
Rhizodus Hibberti, on, 266. 
Rhizopods, on some freshwater and 
terrestrial, 160, 870. 
Rhynchites, new species of, 391. 
Rhytiphora, new species of, 72. 
Rossella, on the genus, 113. 
Royal Society, proceedings of the 
158, 225, 286, 364. 
Ruscino, new species of, 341. 
Sabatier, A., on the anatomy of the 
common Mussel, 157. 
Savridola, new species of, 414. 
Salamandrella, description of the 
fossil genus, 233. 
Salensky, Dr. W.,on Hiickel’s Gastreea 
theory, 1. 
Scapus, on the new genus, 173. 
Schizodus, new species of, 431. 
Schneider, A., on an apparatus of 
dissemination of the Gregarine 
and the Stylorhynchi, 368. — 
Scizna, new species of, 269. 
Scordylia, new species of, 341. 
Scorpéena, new species of, 80. 
Sea-bottom, on the nature of the, 286. 
Seba, new species of, 185, 
Selachia, on segmental organs in 
adult, 95. 
Semper, Prof. C., on the embryogeny 
of the Rhizocephala, 83; on the 
relationship of the Vertebrata and 
Annelida, 94; on segmental organs 
in adult Selachia, 95. 
Sesarma, new species of, 41. 
characters of the 
