474 



INDEX. 



I 



Semanopterus, new species of, 142. 

 Serpent tribe, on the extensibility of 

 membrane and muscle in the, 394. 



Sertulai'ia, on the development of, 136. 



Shells, on Mr. Cuming's collection 

 of, 149 ; descriptions of new species 

 of fossil, 347. 



Shepherd, Prof. F., on the habits of 

 Notonecta glauca, 158. 



Sinde, noteg on the botany of, 420. . 



Smith, J. T., on the Ventriculidse of 

 the chalk, 36, 203, 279, 352; on 

 some curious phenomena in the 

 night-blooming Cereus, 77- 



Sparganium ramosum, on the struc- 

 ture and growth of, 181. 



Spiders, on the reproduction of lost 

 parts in, 173. 



Spiridens, new species of, 325. 



Sponges, freshwater, on the structure 

 and animality of the, 303. 



Stems, on the anomalous forms of 

 dicotyledonous, 127. 



Stephens, S., on a new method of re- 

 laxing insects, 144. 



Teschemacher, J. E., on the fossil 

 vegetation of anthracite coal, 157. 



Thompson, W., on the fauna of Ire- 

 land, 62 ; on the occurrence of the 

 Bonapartian gull in Europe, 192. 



Thwaites, G. H. K., on the Diato- 

 macese, with descriptions of new 

 genera and species, 161 ; on the 

 habits of Tinea granella, 234; on 

 the early stages of the development 

 of Lemanea fluviatilis, 460. 



Tinea granella, on the habits of, 234. 



Treviranus, Prof., on the anomalous 

 forms of dicotyledonous stems, 124. 



Tritonia, new species of, 191. 



Tropiphorus, on the British species 

 of, 301. 



Tubularia, on the development of, 

 134. 



Utricularia, on some Indian species 



of, 381. 

 Ventriculidae of the chalk, on the 



classification of the, 36, 203, 279, 



352. 

 Ventriculites, observations on the, 



435. 

 Vicary, Capt. N., on the botanv of 



Sinde, 420. 

 Walker's, F., descriptions of Aphides, 



249, 328, 443 ; on the migrations 



of Aphides, 372. 

 Walton, J., on the genera of insects 



Pissodes, Hypera, &c, 295 ; on the 



genus Anthonomus, 416. 

 Westwood, J. O., on the common 



flea, 316; on the potatoe disease, 



377 ; on some new species of Athy- 



reus, 386. 

 White, A., on an apparently new sub- 

 genus of Calandridae, 107 ; on some 



new or little-known Crustacea, 221. 

 Williamson, F., on Caladium distilla- 



torium, 188. 

 Williamson, W. C, on the recent 



British species of the genus Lagena, 



1 ; on a new British species of Cam- 



pylodiscus, 321. 

 Wollaston, T. V., on the insects of 



Madeira, 7^- 

 Wright, Dr., on the veneniferous 



glands of Geophilus longicornis, 



140. 

 Xenocarcinus, characters of the genus, 



221. 

 Zebrida, characters of the new genus, 



222. 

 Zollinger, M., on Rafflesia Patma,154. 

 Zoological Society, proceedings of 



the, 221. 

 Zoophytes, hydroid, observations on 



the, 133. 

 Zygophyllum, new species of, 427. 



END OF THE FIRST VOLUME. 



PRINTED BY RICHARD AND JOHN E. TAYLOR, 

 BED LION COURT, FLEET STREET. 



