500 



INDEX TO VOL. XVIII 



AcHATiNA, new species of, 96, 434. 



Actinia, new British species of, 346, 

 497. 



Agassiz, Prof., on the Cumae, 428. 



Alder, J., on some new genera and 

 species of British hydroid Zoo- 

 phytes, 353, 439. 



Algae, on the sexuality of the, 81, 181. 



Alternation of generations, on the, 

 368. 



Amraoccetes, on the development of, 

 298. 



Amphioxus lanceolatus, on the habits 

 of, 350. 



Anguillulae of mildewed wheat, on the 

 vitality of the, 268. 



Animals, on peculiar movements of 

 the plasmatic cells in certain, 496. 



Annelides, on the development of the 

 branchiferous, 105. 



Anthus, new species of, 60. 



Arenicola piscatorum, on the develop- 

 ment of, 105. 



Aromochelys, new species of, 266. 



Arthoniae, descriptions of new British, 

 330. 



Assiminia, observations on the genus, 

 419. 



Atlas, on the anatomy of the genus, 

 101. 



Babington*s, C.C., Manual of British 

 Botany, reviewed, 163. 



Bailey, Prof. J. W., on the non-ex- 

 istence of polarizing silica in the 

 organic kingdoms, /8; on a new 

 mode of cleaning diatomaceous de- 

 posits, 189, 190; on the origin of 

 greensand, and its formation in 

 the oceans of the present epoch, 

 425. 



Balfour, Prof., on the flora of the 

 Cumbrae Islands, 67. 



Bate, C. S., on the British Diastylidae, 

 187. 



Benson, W. H., on Clausilia Mortil- 

 leti, 74, 424; on new terrestrial 

 shells from Ceylon, with a general 

 list of the species inhabiting that 

 island, 94; on new Indian and 

 Burmese Helices and Cyclosto- 

 macea, 249 ; on some new land- 

 shells from the Cape, 433. 



Birds, new, 56, 57, 60, 173, 186, 

 260, 270, 343, 350, 418, 430, 485 ; 

 of the Himalaya, on the geogra- 

 phical distribution of the, 166 ; 

 attempts at a natural arrangement 

 of, 193 ; on the affinities and limits 

 of the scansorial, 207 ; rare British, 

 430. 



Books, new : — Sowerby's Ferns of 

 Great Britain and Fern- Allies, 54 ; 

 Johnson's British Poisonous Plants, 

 ib. ; Phillips's Manual of Geology, 

 159; Gosse's Tenby, 161; Babing- 

 ton's Manual of British Botany, 

 163 ; Harvey's Trees and their 

 Nature, 165; Kirby and Spence's 

 Introduction to Entomology, 258 ; 

 Chanter's Ferny Combes, 259; 

 Bromfield's Flora Vectensis, 473 ; 

 Nyman's Sylloge Florae Europaeae, 

 475. 



Botanical Society of Edinburgh, pro- 

 ceedings of the, 66, 181, 337. 



Braun, Prof. A,, on the vegetable in- 

 dividual in its relation to species, 

 363. 



Buarremon, new species of, 350. 



Bucco, new species of, 260. 



Bulimus, new species of, 96, 433. 



Burgess, Lieut., on the nests and eggs 

 of the birds of Western India, 

 175. 



Busk, G., on Polyzoa collected on the 

 coast of Norway and Finmark, 

 32. 



Callitriche hamulata, note on, 429. 



