476 



INDEX to VOL. XVIII. 



ACANTHODIS, new species of, 23. 



Acartia, characters of the genus, 183. 



Achatina, new species of, 61. 



Achatinella, new species of, 124. 



Agaricus, new British species of, 474. 



Alaptus, on the British species of, 51. 



Alder, J., on some new and rare British 

 species of naked mollusca, 289. 



Alexanders, Dr. R.C., account of botanical 

 excursions in Upper Styria, 94. 



Algae, on the structure of, 42. 



Amphibola, new species of, 122. 



Anagrus, on the British species of, 51. 



Anaphes, on the British species of, 51. 



Animals, general views on the classifica- 

 tion of, 212 ; observations on the in- 

 stincts of, 376. 



Antaria, characters of the genus, 184. 



Antelopes, on some species of, 162, 214. 



Aphana, new species of, 24. 



Aphides, on the generation of, 192. 



Apus, new species of, 358. 



Arachnida, new genera of, 179. 



Araneidea, new British, 297. 



Arescon, on the British species of, 51. 



Argaliadse, description of the family, 67. 



Ascalaphus, on the habits of the, 355. 



Astarte, new species of, 336. 



Atom aria, new British species of, 452. 



Atrypa, observations on the genus, 29. 



Atychia, new species of, 344. 



Babington, C. C, on distinctions between 

 Parietaria erecta and P. diffusa, 425. 



Bailey, Prof. J. W., on the detection of 

 spirally-dotted or scalariform ducts and 

 other tissues in anthracite coal, 67. 



Balfour, Dr., on some rare plants gathered 

 in the neighbourhood of Edinburgh, 

 425 ; on Exogonium Purga, 426; on the 

 Alpine flora of the British Isles, 473. 



Barneoud, M., on the organogeny of 

 irregular corollas, 132. 



Bat, new species of, 356. 



Beckmann's, Prof., History of Inventions, 

 noticed, 413. 



Bee, on the impregnation of the queen , 470. 



Bee-hives, on the aqueous vapour and on 

 the dark colour of the wax in, 190. 



Benson, Mr., on the habits of various 

 species of Paussidae and Cetoniidae, 469. 



Berghaus's, H., Physical Atlas, notice of, 



409. 

 Berkeley, Rev. M. J., on British hypo- 



gaeous fungi, 73 ; on a new British spe- 

 cies of Agaricus, 474. 

 Bird, Dr. G., on the siliceous armour of 



Equisetum hyemale, 191. 

 Birds observed to winter in Macedonia, 



10 ; on the size of the blood-corpuscles 



of, 56 ; of Calcutta, descriptions of the, 



102, 168, 251, 303, 397; of Tobago, 



114; new, 129,349,418. 

 Blackwall, J., on some newly discovered 



species of Araneidea, 297. 

 Blanchard, M., on the embryogeny of the 



Ornithomyiae, 70. 

 Blood-corpuscles, on the size of the, 56. 

 Bonyun, Dr. G. R., on the greenheart or 



Beeberu-bark tree of Demerara, 425. 

 Boott, Dr., on new species of Carex, 186. 

 Boreham, C., on the supposed sense of 



pain in insects, 353. 

 Botanical Society of Edinburgh, proceed- 

 ings of the, 64, 425, 473. 

 Bouchardat, M., on the absorbing power 



of plants, 134. 

 Bovidae, on the arrangement of the, 227. 

 Boys, Capt., on the habits of Dorylus and 



Ascalaphus, 354. 

 Brachiopoda, new, 461. 

 Broome, C. E., on British hypogaeous 



fungi, 73. 

 Buccinum undatum, observations on the 



varieties of, 248. 

 Buccinum, new species of, 325. 

 Buchanan, Dr. A., on the wound of the 



ferret, 376. 

 Bulimus, new species of, 59, 63, 124, 128. 

 Butterflies, extraordinary flight of, 133 ; 



descriptions of new, 371. 

 Callipepla, new species of, 351. 

 Calotes, new species of, 429. 

 Camerophoria, observations on the genus, 



89. 

 Candacia, characters of the genus, 1 84. 

 Carabidae, new genera of, 354. 

 Caraphractus, on the British species of, 52. 

 Carex, descriptions of new species of, 186. 

 Carinthian highlands, on the entomology 



of the, 339. 



