GENERAL INDEX. 



Acanthode'iii/s scabrdsus, supposed to be a 

 larva only, 145. 



Achatlna clavata described, 487. 



Acherontia A'tropos, erratic habits of, 137. 



Actinia?, observations on rhe habits of, 474. 



Aeolodon, description of, 287. 



Africa, expedition into the interior of, 98; enu- 

 meration of the objects in natural history 

 collected by the exploring party, 102. 



Alcydnium digitatum, description of, 475. 



Aliico stridula, changes of plumage, 306. 



Aly.'sum calycinum, sudden appearance of in a 

 particular locality, 447. 



Ancistiocerus, characters of the group, 4'J4. 



Anemonal curves, observations on, 211. 



Animal life, compared with vegetable, 28. 



Anostoma (new gen is in entom.\ 14.3; A. aus- 

 tralasia? figured and described, 143; A.Hcrbstii 

 figured, 144; observations upon, 485. 



Antenna? of insects, observations on, 257. 



Apes, tossil remains of, 437. 



Argonaut, experiments of Mrs. Power upon the 

 shell and eggs of, detailed, 394 ; description of 

 the Octopus when just hatched, 395; obser. 

 vations of Mr. Smith upon the animal and its 

 shell, 396; opinion of Mr. Gray respecting 

 the nucleus of the shell, 39/ ; experiments of 

 Captain Rang upon the shell, 397 ; position 

 of the Ocythde with respect to the shell, 398 ; 

 description of the manner in which the Ocy- 

 thde crowls along the bottom of the sea, 399; 

 obser. ations of Mr. Cranche upon, 530 ; ob- 

 servations upon fractured specimens repaired 

 with true shell, 527 ; on the parasitic nature 

 of the animal, 247. 



Armadillo, specimen stolen from the Zoological 

 Gardens, 4 34. 



Ath'ilia centitdlia?, subject of a prize essay, 547. 



Atiactodon elegans figured and described, 

 219. 



Aurora, notices of, 221. 633. 635. 637. 



Ballard Head, geological observations upon the 

 chalk of, 414. 



Basalt, experiments upon the fusion of, 147. 



Bear, tossil remains of, 125. 



Bees, migrative impulse displayed, 134. 



Belemnita-Madrepora, 161. 



Bettongia penicillata, rufescens, setosus, de- 

 scribed, 584. 



Betula alba, observation upon, 447. 



Bimana, characters of, 525. 



Birds, genera and species of indicated by their 

 nests, 4 ; late singing of, 53; list of those 

 found in Devonshire, 113 ; list of the rarer 

 species killed in Suffolk and the borders of 

 Norfolk and Essex, 116. 



Black Jack caterpillar. See Athalia centifblia?. 



Black-throated loon, changes of plumage, 301. 



Blue Skate, capture of an immense specimen, 

 435. 



Bus brachyceros described, 587. 



Botanical specimens, preservation of from in- 

 sects, 311. 



Bottletit, common, observations on the habits 

 of, 199 ; figured and described, 204 ; account 

 of a brood reared in confinement, 205. 



Bramble, common, nests of the O'smia leuco- 

 mtlana occurring in, 491. 



Bramblerinch, changes of plumage noticed, 132. 



Brady, Captain Samuel, history and exploits, 

 158. 



Bridlington tertiary bed, notice of, 504. 



Buccinum undatum, fact relative to the en- 

 largement of its eggs, 247. 



CalamOphilus biaimicus, variation of plumage, 

 303. 



Campc'intia erucif'umis, 279. 



Canary, power of imitating the human voice, 

 548. 



Canis chrysurus (fulvous-tailed dog) described, 

 577. 



Canis procyondides (raccoon-faced dog) de- 

 scribed, 578. 



Capercailzie, formerly known in Scotland, 

 119. 



Carcharias megalodon, occurrence of the fossil 

 teeth in the crag, 225. 



Cassida obsoleta, remarks relating to, f76. 



Cassis, distinctions between it and Cypra?cassis, 

 214; testiculus, animal of, figured and de- 

 scribed, 472. 



Cat captures a swallow by feigning death, 5; 

 instance of its sagacity in discovering its 

 home, 133. 



Centenus variegatus described, 581. 



Chalk, sections of, on the Dorsetshire coast, 

 417. 



Cha?tura pelasgica, limited geographical range, 

 137. 



Chaffinch, changes of plumage noticed, 132. 



Chaunondtus Sabfnii described, 487. 



Cheirdpnda, characters of, 525. 



Chimpanzee, its innate dread of the large Feles, 

 quoted in relation to instinct, 2. 



Chiton, fossil, described, 162. 



Cinnabar, notice of a large specimen, 157. 



Circus cineraceus, changes of plumage, 302. 



Colour, on the changes of in the fur of Mam- 

 malians and the feathers of birds, 259. 



ColiimbidiE improperly placed beside the Ra- 

 sdres, 329. 



Colymbus glacialis, changes of plumage, 306. 



Conepatus HumbiMdtii described, 581. 



Congeria. See Mytilus polymorph us. 



Corrosive solution, valuable in the preservation 

 of botanical specimens, 311. 



Corvus Gimix, occurrence of black varieties, 81 ; 

 its pairing with the black crow, 82. 



Cows, statistics relating to the births of the 

 sexes, 84. 



Crag, fossils of, S5. 90. 218. 225. 



Crocodile, fossil, figured, 532. 



Crossbill, notes on the habits of, 164; remark- 

 able dissimilarity in the plumage, 165. 



Crow, carrion, on the habits of, as observed in 

 Scotland, 118. 



Crow, Rovston, on the habits of, as observed in 

 Scotland, 118. 



Cubla, observations upon, 488. 



Cuckoo, observation upon, 554. 



Curruca cinerea. See Whitethroat. 



Cylindrodes (new genus in entom ) 141 ; Camp, 

 bellii figuret "~>id described, 142. 



Cvn6gale Bennettii described, 579. 



Cynthia cardui, extensive geographical range, 

 137. 



Cyprascassis, characters of the genus, 211; dis- 

 tinctions between it and Cypra?\i, 215 ; notice 

 of the habits of the animal, 216 ; additional 

 observations upon, 431 ; additional remarks 

 by M. Stutchbury, 470 ; objections to the 

 admission of the genus, 367. 387. 



Death, simulation of, remarks upon, 508. 



Deposits, semi-tertiary, 161. 



