474 



INDEX. 



Semanopterus, new species of, 142. 

 Serpent tribe, on the extensibility of 

 membrane and muscle in the, 394. 

 Sertularia, on the development of, 136. 



Shells, on Mr. Cuming's collection* 

 of, 149 ; descriptions of new species 

 of fossil, 347. 



Shej)herd, Prof. F., 00 the habits of 

 Isotonecta glauca, 158. 



Sinde, notes on the botany of, 420. 



Smith, J. T., on the Ventriculidae of 

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

 some curious phaenomena in the 

 mght-blooming Cereus, 77. 



Spargauium 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- 

 macea;, 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. 



Tropi})horus, on the British species 

 of, 301. 



Tubularia, on the development of, 

 134. 



Utricularia, on some Indian spec 



of, 381. 

 VentricuUda; of the chalk, on 



classification of the, 36, 203, 23 



352. 

 Ventriculites, observations on tli 



435. 

 Vicaiy, Capt. N., on the botany] 



Sinde, 420. 

 Walker's, F., descriptions of Aphid 



249, 328, 443 ; on the migratifl 



of Aphides, 372. 

 Walton, J., on the genera of inseci 



Pissodes, Hypera, &c., 295; ontl 



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 Calandrida;, 107 ; on some 



new or little-known Crustacea, 221. 

 WilUamson, F., on Caladium distilla- 



torium, 188. 

 WilUamson, W. C, on the reccm 



British species of the genus Lagena 



1 ; on a new British species of Cam 



pylodiscus, 321 . 

 Wollaston, T. V., on the insects o 



Madeira, 76. 

 Wright, Dr., on the veneniferou 



glands of Geophilus longicomis 



140. 

 Xenocai'ciniis, characters of the genus 



221. 

 Zebrida, characters of the new genu; 



222. 



Zollinger, M., on Rafflesia Patma,15- 

 Zoological Societv, proceedings 



the, 221. 

 Zoophytes, hydroid, observations v 



the.'l33. 

 Zygophyllum, new species of, 427- 



END OF THE FIRST VOLUME. 



I'KINTED BY RICHARD AND JOHN E. TAYLOU, 

 RED Z.10N COURT, FLF-KT STREKT. 



