INDEX, 



537 



Verneuil, M. de, on the succes- 

 sion of species, 353. 



Vibracula of the Polyzoa, 229. 



Viola, small imperfect flowers of, 

 204. 



, tricolor, 68. 



Virchow, on the structure of the 

 crystalline lens, 173. 



Virginia, pigs of, 78. 



Volcanic islands, denudation of, 

 316. 



Vulture, naked skin on head, 188. 



Wading-birds, 408. 



Wagner, Dr., on Cecidomyia, 456. 



Wagner, Moritz, on the import 

 ance of isolation, 96. 



Wallace, Mr., on origin of spe- 

 cies, 1. 



, on the limit of variation 



under domestication, 36. 



, on dimorphic lepidoptera, 



43, 274. 



, on races in the Malay Archi- 

 pelago, 44. 



, on the improvement of the 



eye, 173. 



, on the walking-stick insect, 



216. 



, on laws of geographical dis- 

 tribution, 380. 



, on the Malay Archipelago, 



415. 



, on mimetic animals, 444. 



Walsh, Mr. B. D., on phytopha- 

 gic forms, 45. 



, on equal variability, 149. 



Water, fresh, productions of, 405. 



Water-hen, 169. 



Waterhouse, Mr., on Australian 

 marsupials, 106. 



, on greatly developed parts 



being variable, 141. 



, on the cells of bees, 260. 



, on general affinities, 446. 



Water- ouzel, 169. 



Watson, Mr. H. C, on range of 

 varieties of British plants, 44, 

 55. 



, on acclimatization, 134. 



, on flora of Azores, 388. 



Watson, Mr. II. C, on rarity of 

 intermediate varieties, 162. 



, on Alpine plants, 391. 



, on convergence, 120. 



, on the indefinite multipli 



cation of species, 121. 



Weale, Mr., on locusts transport- 

 ing seeds, 387. 



Web of feet in water-birds, 170. 



Weismann, Prof., on the causes 

 of variability, 7. 



, on rudimentary organs, 471, 



West Indian Islands, mammals of, 

 415. 



Westwood, on species in large 

 genera being closely allied to 

 oihers, 54. 



— —- on the tarsi of Engidse, 147. 

 -• - - , on the antennae of hymenop- 

 terous insects, 432. 



Whales, 216. 



Wheat, varieties of, 103. 



White Mountains, flora of, 390. 



Whittaker, Mr., on lines of es- 

 carpment, 316. 



Wichura, Max, on hybrids, 294, 

 296, 307. 



Wings, reduction of size, 130. 



of insects homologous with 



branchiae, 176. 



, rudimentary, in insects, 



467. 



Wolf, crossed with dog, 248. 



of Falkland Isles, 414. 



WoUaston, Mr., on varieties of 

 insects, 45. 



, on fossil varieties of sheila 



in Madeira, 49. 



Wollaston, Mr., on colors of in- 

 sects on sea-shore, 127. 



, on wingless beetles, 129. 



, on rarity of intermediate 



varieties, 162. 



, on insular insects, 410. 



, on land-shells of Madeira 



naturalized, 421. 



Wolves, varieties of, 83. 



Woodcock with earth attached to 

 leg, 387. 



Woodpecker, habits of, 168. 



, green color of, 187. 



