GENERAL INDEX. 



Achatina acicula found within a human skull, 

 565 



Achill island described by Mr. Newman, 571 



Adder, supposed derivation of the name, 566 



Agardh, Prof, his views upon the Marsupialia 

 quoted by Mr. Ogilby, 346 



Agassiz, Prof, his opinion on the supposed mam- 

 miferous remains at Stonesfield, referred to, 3 

 strictures upon his reprint of Sowerby's Mine- 

 ral Conchology, 254; his vindicatory letter, 

 356 ; Mr Sowerby's observations upon, 420 ; 

 his letter lithographed for distribution, 418 



Aigoceros niger, discovery of by Capt. Harris 

 noticed, 401 



Amphibia, on the Classifications of the, by Mr. 

 Hogg, 265, 367 



Amphicoma vulpina, note upon by Mr. Double- 

 day, 97 



Amphidesma decussatum, Bean, n. sp. from the 

 cornbrash of Scarborough, described, 59 



Amphigonus, Agass. reference to the name by M. 

 Valenciennes, 9 



Amphitherium referred to byM. Valenciennes, 3 



Ampfriuma, referred to by Mr. Hogg, 370 



Anas glacialis killed at Lynn, 198 



Annulosa, by W. S. MacLeay, in the 'Illustra- 

 tions of the Zoology of South Africa,' reviewed, 

 38 



Atwmia semistriata, Bean, n. sp. from the corn- 

 brash of Scarborough described & figured, 61 



Anomuptcris, characters of the genus, 456 



Anser phcenicopus, Bartlett, n. sp. characters of 

 noticed, 180 



Anthocephalus rudicornis, Drummond, n. sp. 

 described and figured, 228 



Anthophyllum, its occurence in the coralline crag, 

 326 



Ardea alba, instances of its capture in Britain, 

 30 



Argonauta. — Researches of Delia Chiaja upon> 

 noticed by Dr. Cox, 99 



•— Observations and experiments of Ma- 

 dame Power, 101 : her notice of the opinions 

 of previous observers, 102 : manner in which 

 she prosecuted her observations at Messina, 

 103 : her description of the poulp and its mem- 

 branous arms, 104: natural habits of the ani- 

 mals, and period at which they most abound, 

 105 : her description of the development of the 

 supposed embryo, 150 : experiments upon the 

 reparative power possessed by the poulp, 152 

 correction of her error respecting the supposed 

 young poulps, 153 



■ Summary of Madame Power's obser- 

 vations, and of Prof. Owen's arguments: 

 against the parasitic theory, in the general 

 editorial article, 194 



Abstract of Prof. Owen's paper from 



the Proceedings of the Zoological Society, 421 : 

 evidence deduced against the parasitic theory 

 from the examination of the poulps and their 

 shells collected by Madame Power, 422 : exa- 

 mination of the arguments in favour of the 

 parasitic theory — those of Mr. Gray, 427: of 

 Messrs. Charlesworth, D'Orbigny, and Blain- 

 ville, 429: of Mr. Cranch and M. Bang, 430: 

 points in the history of the subject still requi- 

 ring elucidation, 431, 



Arvicola arvalis, remains of in the crag, 318; — 

 Arv. pratensis, procured by Mr. Wm. Thomp- 

 son at Ballantrae, 585 



Asclepias procera, characters of, 568 



Aspidium dumetorum, Mr. Newman's correction 

 of an error relating to, 574 



Asplenium marinum, observations relating to, 

 549 



Asterocarpus, characters of the genus, 457 



Auricula myosotis, found by Mr. Wood in the 

 crag of Sutton, 320 



Avicula longicostata, Stutchbury, n. sp. describ- 

 ed and figured, 163 



Baboon, Sir James Alexander's description of a 

 large African species, 408 



Ballard Head referred to by Mr. Clarke, 393 



Bank Vole, see Arvicola pratensis 



Basilosaurus, comparison of with the Stonesfield 

 fossils, 55 



Buckschia, characters of the genus, 456 



Botanical Society, see Society. 



Botheratiotherium, objected to as a generic name 

 by M. De Blainville, 56 



Breccia of Dorsetshire described by Rev. W. B. 

 Clarke, 397 



Bridlington tertiary deposit of shells referred to 

 by Mr. Lyell, 323 



British Association, editorial remarks upon, 415 



Bulla, fossil species of, from the crag, described 

 by Mr. S. V. Wood, 460 ; B. undulata, Bean, 

 n. sp. described and figured, 61 



Byssus, description of, in the Cmchifera, 126 



Calcutta, Botanic Garden at, 304 



Calidea parentum, White, n. sp. described, 542 



Caliprepes Grayii, White, n. sp. described, 543 



Calliphara bifasciata, White, n. sp. descr. 541 



Cardium globosum, Bean, n. sp. from the corn- 

 brash of Scarborough, described and figured, 

 60 



Castor Fiber, skull of figured, 598 



Caterpillars, singular procession of observed in 

 South Australia by Mr. Davis, 146 



Caulopteris, characters of the genus, 454 



Ceraptei-us, Mr. MacLeay's Memoir on noticed, 

 42 



Cetacea, fossil remains of obtained at Heme Bay 

 by Mr Richardson, 99 



Cetoniidm, new species of, 24 



Cetonia,, Mr. MacLeay's arrangement of criticis- 

 ed, 38 



Cetonia, present arrangement of the species for- 

 merly included in that genus, 171 



Cheadle, Staffordshire, on the Natural History 

 of, by Mr. James Carter, 72 



Children, Mr. Portrait of noticed, 418 



Chimpanzee, death of the one at the Zoological 

 Gardens noticed, 363 



Chirotherium, observations on by Dr. Grant, 46 



Chloroperla, new species of described, 86 



Chondrites, characters of the genus, 453 



Cidaris within a fossil zoophyte, figured and de- 

 scribed, 352 



Clangula vulgaris, remarks on by Mr. Blvth, 

 471 



Colchester, Mr. his discovery of fossil Mammalia 

 in the London clay, 448 



Conchology, Mineral, of Great Britain, Agassiz' 

 translation of noticed, 254 



