500 



INDEX TO VOL. XVIII. 



AcHATiNA, new species of, 96, 434. 



Actinia, new British species of, 346, 

 4^7- 



Agassiz. Prof., on the Cumse, 42S. 



Alder, J., on some new genera and 

 species of British hvdroid Zoo- 

 phytes, 353, 439. 



Algse, on the sexualit}- of the, 81, 181. 



Alternation of generations, on the, 

 368. 



Ammocoetes, on the deTclopment of, 

 2HS. 



Amphioxus lanceolatus, on the habits 

 of, 350. 



Anguillulie of mildewed wheat, on the 

 vitality of the, 268. 



Animals, on j>eculiar 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, 2G6. 



Arthoniae, descriptions of new British, 

 330. 



Assiminia, observations on the genus, 

 419. 



.\tlas, on the anatomv of the genus, 

 101. 



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

 Botany, reviewed, 16.j. 



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

 istence of polarizing gihca in the 

 organic kingdoms. 7^ ; on a new 

 mode of cleaning diatomaceous de- 

 posits, 1*9, 19<J; on the origin of 

 greensand, and its formation in 

 the oceans of the present epoch, 

 4 25. 



Balfour, Prof., on the flora of the 

 Cumbrae Islands, 67. 



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

 187. 



Benson, '^'. H., on ClausiUa Mortil-* 

 leti, 74, 424 ; on new terrestrial 

 shells from Cejlon, 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 Geologj', 

 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 : 

 Nvman's Svlloge Florje Europaeae. 

 475. ' 



Botanical Society of Edinbiu-gh, 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 egg 

 of the birds of Western Indi: 

 175. 



Busk, G., on Polyzoa collected on tl 

 coast of Norwav and Finmarl 

 32. 



Callitricbe hamulata, note on, 429. 



