INDEX. 



Setifera, obsei-rarions on the, and 

 their skulls, 431. 



Shai-pe, R. B., on the Peregrine 

 Falcon from Sardinia, 20; on a 

 new species of Turkey Vulture 

 from tJie Falklands, and a new 

 g-enus of Old- World Vultui-es, 133; 

 on the Peregrine Vulture of the 

 Magellan Straits, 220. 



Shell, on the transformation of, into 

 chitinous structure by the polype 

 Hydractinia, 1. 



Silurus and Glanis of the ancient 

 Greeks and Romans, on the, 199. 



Sipunculus nudus, on the histology 

 of, 88. 



Smith, E., on some new species of 

 Terebridae, 262 ; on a new species 

 of Viti-ina, 288. . 



Smith, F., on new species of fossorial 

 Hymenoptera, 441. 



Spatulemys Lasalte, notes on, 73. 



Sphajria, new British species of, 348. 



Sphseronema, new species of, 345. 



Sphargis, on the osteology of, 171, 

 470. 



Sponges, on new species of, 234, 275 ; 

 on the position of the, in the ani- 

 mal kingdom, 241 ; on points of 

 distinction between the Foramini- 

 fera and, 351. 



Stebbing, Rev. T. R. R., on a crus- 

 tacean of the genus Zia, 286. 



Stenopseustes, description of the 

 new genus, 131. 



Stemaspis, on the anatomy of, 02. 



Sua, new species of, 436. 



Swinhoe, R., on a new species of 

 Nettapus, 15. 



Terebella nebulosa, on the develop- 

 ment of, 87. 



Terebra, new species of, 264. 



Terebratula \-itrea, on the develop- 

 ment of, 92. 



Terebridse, on new forms of, 262. 



Tetragrapsus, new species of, 136. 



Thaumops, description of the new 

 genus, 390. 



Thyrsites, new species of, 338. 



Tolypeutes, on the dorsal shield of, 

 397, 469. 



Tomopterus, new species of, 128. 



Tortoises, notes on, 143 ; new genera 



and species of, 156, 289 ; on the 

 original form, development, and 

 cohesion of the bones of the ster- 

 num of, 161 ; on some extinct, 

 from the islands of Rodriguez and 

 Mauritius, 397. 



Trachemys, new species of, 147. 



Triglopsis, new species of, 320. 



Tumbull, Dr. C. S., on a mite in the 

 ear of the Ox, 79. 



Tursiops, new species of, 316. 



Tyrse nilotica, on an adult skeleton 

 of, 470. 



Verrill, Prof A. E., on the Mollusca 

 of Europe compared with those of 

 Eastern North America, 206. 



Verticillium, new species of, 346. 



Vibriones, on the heat necessary to 

 kill, 454. 



Vitrina, new species of, 288. 



Voluta, new species of, 159. 



Westwood, Prof. J. O., on the Bell 

 Collection of Reptiles, 78. 



Whales, on Berardius and other 

 Ziphioid, 17 ; on the geographical 

 distribution, migration, and occa- 

 sional habitats of, 98 ; of the New- 

 Zealand seas, on the, 104 ; new 

 species of Crustacea parasitic on, 

 157, 2.38 ; of the Indian Ocean, 

 notes on the, 231 : new species of, 

 from California, 316. 



Whiteaves, J. F., on deep-sea dredg- 

 ing in the Gulf of St. Lawrence, 

 155. 



WiUemi5es-Suhm, Dr. R. von, on a 

 new genus of Amphipod Crusta- 

 ceans, 389. 



Williamson, Prof. W. C, on the 

 organization of the fossil plants of 

 the coal-measures, 227. 



Xeda, description of the genus, 192. 



Xenocrasis, description of the new 

 genus, 131. 



Xenurus unicinctus, on the habits of, 

 46;3. 



Zeller, E., on the structure of the 

 proboscis of an hermaphrodite 

 Nemertian, 398. 



Zia, on a crustacean of the genus, 

 286, 419. 



Zonites algirus, on the capreolus of, 

 235. 



END OF THE ELEVENTH VOLUME. 



FEINTED BY TAYLOR AND FHANCIS, 

 BED I.ION COURT, FLEET STREET. 



