INDEX. 



443 



with descriptions of new epecies, 



412. 

 Onchidia, on theaiBnities of tlie, 259. 

 Ophryocystis Biitscblii, on the struc- 

 ture oi; 301. 

 Ophtbalmis, new species of, 34. 

 Orbitolites, observations on, 93. 

 Orbulina universa, observations on, 



69. 

 Ornithorhynchus, on the embryology 



of, 375. 

 Owen, Sir R., on an impregnated 



uterus and the uterine ova of 



Echidna hystrix, 373. 

 Packard, A. S., on the aspects of the 



bodv in Vertebrates and Arthro- 

 pods, 243. 

 Palaeoblattarise, on, 256. 

 Palaeostoma, observations on the 



genus, 226. 

 Paludicella, new species of, 437. 

 Pantethia, new species of, 35. 

 Panchala, new species of, 201. 

 Pentastomum polyzonum, note on, 



92. 

 Phylloxera, new species of, 439. 

 Pleui'Otomidae, new species of, 317. 

 Poirier, M., on a new type of tlie 



class Hirudinese, 149. 

 Polythalamia, on a new form of, 



349. 

 Polyzoa, descriptions of new marine, 



276. 

 Potts, E., on Paludicella erecta, 



437. 

 Protozoa of the salt-pools of Tran- 

 sylvania, list of the, 360. 

 Pseudacrsea, new species of, 123. 

 Pterothysanus, new species of, 400. 

 Pulicidfe, on the systematic position 



of the, 36. 

 Quatrefage^^, A. de, on Moas and 



Moa-hunters, 124, 159. 

 E.eceptaculitida3, on the structure 



and affinities of the, 435. 

 Reptiles, new, 100. 

 Rhonibophryiie, observations on the 



genus, 388. 

 Rhopalea, on the genus, 71. 

 Rhopaloiiaria, on species of, from 



the Wenlock shales, 77. 

 Ridley, S. 0., on some sponges, with 



description of a new species, 1 83. 

 Roberts, T., on a new species of 



Conoceras, 433. 



Ruchbrune, A. T. de, on a new type 

 of the class Hirudinete, 149. 



Rosenstock, R., on the synonymy of 

 some Heterocerous Lepidoptera, 

 63. 



Roule, L., on the genus Rhopalea, 

 71. 



Salpa, on the process of digestion in, 

 72. 



Scliimkewitsfh, V., on the anatomy 

 of Epeira, 221. 



Schizoporella, new species of, 280. 



Schlumberger, C, on Orbulina uni- 

 versa, 69. 



Schneider, A., on Ophryocvstis 

 Biitscblii, 301. 



Scudder, S. II., on Triassic insects, 

 254. 



Scyphomedusse, on local colour- 

 varieties of, 409. 



Shells, new, 317. 



Sladen, W. P., on the classificatory 

 position of Hemiaster elongatus, 

 225. 



Smith, E. A., on new species of 

 Pleurotoniidae, 317. 



Smith, G. v., on footprints of verte- 

 brate animals in the lower New 

 Red of Penrith, 295. 



Smith, S. T., on the Crustacea of the 

 'Albatross' dredgingsiu 1883, 179. 



Spiders, new, 89 ; on the auditory 

 and olfactory organs of, 329. 



Sponges, observations on, 17, 29, 58, 

 65, 183, 249, 271. 



Spongia coriacea, on the, 1 7. 



Spongillidpe, on the South-Russian, 

 58. 



Stenotarsia, new species of, 348. 



Tachina, on a species of, occurring on 

 the tracheal sy.stem of Carabus, 74. 



Tanaecia, new species of, 199. 



Technitella legumen, on a new lo- 

 cality for, 367. 



Teracolus, new species of, 403. 



Theritas, new species of, 267. 



Thomas, O., on a new species of 

 Microgale, 337. 



Tcjmes, R. F., on the Oolitic Madre- 

 poraria of the Boulonnais, 434. 



Tvroglvphi, on the anatomy of the, 

 ■369." 



Variation, on the causes of, 93. 



A'ertebrates, on the aspect of the 

 body in, 243. 



