*99 



INDEX TO VOL. VI. 



AcALEPHjE, observations on some, 

 304. 



Acarus, description of a new, 395. 



Aclis, observations on tbe genus, 462, 



Acteonina, new species of, 418. 



Adams, A., on a monograph of the 

 recent species of Trigonia, 148 ; on 

 the animal of Geomelania, 398. 



Adelges Abietis, observations on, 18/. 



Agassiz, L., on the natural relations 

 between animals and the elements 

 in which they live, 153. 



Alga, new British, 266. 



Algse, on the hairs of marine, 465. 



Alveolites, new species of, 377- 



Animals, on the natural relations be- 

 tween, and the elements in which 

 they hve, 153. 



Auisodus, observations on, 35. 



A'.mclida, on the visual organ of the, 

 227. 



Anolis, new species of, 344. 



Auomiadffi, on the species of, 212. 



Ansted's, D. T., Elementary Course of 

 Geology, Mineralogy, and Phjsical 

 Geography, reviewed, 48. 



.^jjhides, descriptions of, 41, 118. 



Arachnida, on the circulatory appa- 

 ratus and organs of respiration in 

 the, 67 ; new species of, 187 ; on 

 some newly-discovered species and 

 characters of a new genus of, 336< 



Araclmophyllum, new species of, 278. 



Area, new species of, 424. 



Asplanchna priodonta, description of, 

 18. 



Astarte, new species of, 423. 



Baird, Dr. W., on the family Limna- 

 diadse, 51 ; on the long-suspended 

 vitality of a snail, 6S. 



liall, J., on the genus Leontodon, 1. 



Barrande, M., on a new classification 

 of Trilobites, 228. 



Bate, C. S., on the male organs in the 

 Crustacea, 109. 



Belemnite, on the structure of the, 

 127. 



Belemnoteuthis, on the structure of 

 the, 127. 



Benson, W. II., on new species of 

 Helix, 25. 



Berenicea, new species of, 286. 



Berkeley, Rev. M. J., on Sphaero- 

 nema deformans, 309. 



Birds, new species of, 60, 137, 140, 

 223, 398. 



Blackwall, J., on some newly-disco- 

 vered species and characters of a 

 new genus of Araneidea, 336. 



Blanchai'd, E., on the circulatory ap- 

 jMiratus and the organs of respira- 

 tion in the Arachnida, 67 ; on the 

 organization of the Malacobdellae, 

 147. 



Boa diviniloqua, on the habits of, 133. 



Bonaparte, C. L., on the Lorine ge- 

 nus of parrots, with the description 

 of a new species, 223, 



Books, new : — Ansted's Elementary 

 Com-se of Geology, Mineralogy, and 

 Physical Geography, 48 ; Goodsir's 

 Arctic Voyage to Baffin's Bay and 

 Lancaster Sound in search of friends 

 with Sir John Franklin, 50; Woods' 

 Tourist's Flora, 122; Patterson's 

 Zoology for Schools, 124; Jukes's 

 Sketch of the Physical Structure of 

 Austraha, 210 ; Outlines of British 

 Geology, 211; Hooker and Walker- 

 Arnott's British Flora, 379; Sturm's 

 Deutschlands Flora, Reichenbach's 

 Icones, Buch, Schimper and Giim- 

 bel's Bryologia, Esenbeck's Genera 

 PIantarum,and Pritzel's Thesaurus, 

 385. 



Botanical Society of Edinbiu-gh, pro- 

 ceedings of the, 65, 142, 302. 



Brachvura, on the male organs of the, 

 109'. 



Brightwell, T., on some Acalephae 

 found at Lowestoft, 304. 



Brodie, Rev. P. B., on the geology of 

 the neighbourhood of Grantham, 

 256. 



Brongniart, A., on the periods of ve- 

 getation and the different floras 

 which have successively occupied 

 the surfaceof the earth, 73, 192,348. 

 33* 



