INDEX. 



503 



Nyniphalis, new species of, 150. 

 Opalina, on a new form of, 419. 

 Orbitolites italica, note on, 191. 

 Orchidege, on tlie pollinization of, 



323. 

 Ostracoda, on new British species of 



Carboniferous, 249. 

 Ova, on oleaginous spheres in the 



yolk of Teleostean, 84. 

 Pachychalina, new species of, 328. 

 Pachymetopon, note on the genus, 



367. 

 Palmella spongiarum, observations 



on, 147. 

 Papilio, new species of, 149. 

 Paramaecium aurelia, on conjugation 



in, 164. 

 Parasites, on the influence of certain 



Rhizocephalous, upon the external 



sexual characters of their host, 



165. 

 Petrosia, new species of, 327. 

 Phakellia, new species of, 379, 



478. 

 Phelloderma, characters of the new 



genus, 347. 

 Phillips, W., on a fungus destructive 



of Aphis rumicis, 1. 

 Phloeodictyon, new species of, 447. 

 Pimelepterus, new species of, 368. 

 Plumohalichondria plumosa, new 



variety of, 376. 

 Polymastia, new species of, 487. 

 Polypodium hydriforme, a new fresh- 

 water Cceleuterate, 110. 

 Potts, E., on freshwater sponges 



from Newfoundland, 243. 

 Primitia, new species of, 259. 

 Prince, E. E., on oleaginous spheres 



in the yolk of Teleostean ova, 



84. 

 Proteleia, characters of the new 



genus, 152, 

 Protozoa, on a phyletic connexion 



between the, and the Metazoa, 



193. 

 Pseudoceratina, new species of, 



287. 

 Pseudohalichoudria, new species of, 



454. 

 Kaspailia, new species of, 482. 

 RautF, Dr. H., on the genus Hindia, 



169. 

 Reniera, new species of, 327, 445. 

 Reptiles, synopsis of, from the pro- 

 vince Rio Grande do Sul, 423. 



Rhabdocoelan, on a new, 321. 



Rhaphidophlus, new species of, 

 475. 



Rhizocephalous parasites, on the in- 

 fluence of certain, upon the exter- 

 nal sexual characters of their host, 

 165. 



Rhizochalina, new species of, 332. 



Rhizopoda, on division in the Amoe- 

 ban, 30 ; on diflerent plasma-layers 

 in the soft body of the, 71. 



Ridley, S. 0., on a new genus and 

 species of Monaxonid sponges, 152 : 

 on the Monaxonida collected 

 during the ' Challenger ' expedi- 

 tion, 325, 470. 



Rohde, Dr. E., on the nervous sys- 

 tem of the Chfetopoda, 311. 



Rosenella, new species of, 21. 



Sacculina, new species of, 105. 



Scorpions, on the arterial system of 

 the, 248. 



Selachian spines, on a new genus of, 

 493. 



Sideroderma, charactera of the new 

 genus, 348. 



Siphonochalina, new species of, 331. 



Smith, E. A., on a new species of 

 Lamellaria, 270. 



Smith, H. G., on new species of 

 butterflies fi'om Burmah, 149. 



Sphenophorus, new species of, 318. 



Spirastrella, new species of, 490. 



Sponges, descriptions of new 

 genera and species of, 34, 126, 

 243, 271, 325, 369, 445, 470 ; 

 on a new genus and species of 

 INIonaxonid, 152; on the genus 

 Hindia, 169, 226; on freshwater, 

 from Newfoundland, 243. 



Spongilla, new species of, 245. 



Stelletta, new species of, 458. 



Stellettinopsis, new species of, 459. 



Stelospongus, new species of, 371. 



Stromatoporella, on some species 

 of, 8. 



Stromatoporoids, on new jor imper- 

 fectly known species of, 8, 



Suberites, new species of, 484. 



Sycandra Ramsayi, notes on, 35. 



Tarucus, new species of, 185. 



Tedania, new species of, 335, 



Teichouella labyriuthica, remarks on, 

 88. 



prolifera, on a parasitic cell in, 



147. 



