INDEX TO VOL. I. 



The new species described in this Volume, together with the species 

 newly characterized, are distinguished by the Italic character. 



Page 

 Acanthosoma heemorrhoidalis .... 570 

 Accentor Alpinus, shot at Cam- 

 bridge 134 



AcMysia Dytisci 122 



Mannerheinii 577 



^Etherise : — Abstract of a Notice 

 of those found in the Nile by 

 M. Caillaud; by M. De Fe- 

 russac ; with a description of 

 a new species (yE. tubifera) ; 



by G. B. Sowerby 518, 134 



Alecto 589 



Alpheus polaris 1 19 



Amphitoite of Desmarest, shewn 



to be of vegetable origin 28-4 



Analestesa, a genus of Cebrionidas 34 



bicolor 35 



testacea 36 



Anatomy of the Thorax, in In- 

 sects, &c. — general observa- 

 tions on— by "E. T. Bennett. . . 391 

 Anopheles, a genus ofTipulidje. . 456 



bifurcatus id. 



maculipennis 457 



Antkus Richardi, taken near Lon- 

 don 280 



described 411 



Aranea domestica, anecdote of. . 383 



Area glacialis 120 



Asilus of the Romans, and Oistros 

 of the Greeks, Mr. W. S. Mac 



Leay on, 277, 566 



Asinus, a ^enus of Equidae 244 



Burchellii 247 



Hemionus 244 



Quaggu 246 



vulgaris 244 



Zebra 248 



Aslerias polaris 119 



Atya scabra 565 



Australasia, its peculiar Zoo- 

 logy 463—4 



Aucbcnia 242 



Auricula caprella 565 



Page 



Balanus glacialis 120 



Balea, J. E. Gray, Esq. on 61 



fragilis 61 



tristensis 61 



ventricosa 62 



Bat, new American, (Nyctinonius 



Braziliensis) 233 



new English (Vespertilio 



Pygmceus 559 



Bell, Thomas, Esq. Abstract of 

 Dr. Gaspard's Memoir on the 

 physiology of Helix Pomatia, 



with notes 93, 174 



on Emarginula rosea 52 



on Sponges 202 



on the supposed identity 

 of tlie genus Isodon of 

 Say with Capromys . . . 230 



on Aranea domestica . 283 



Description of Uromastyx 



Acanthimirus 457 



Bellerophon, M. Defrance's cor- 

 rection of its characters of 223, 572 

 Bennett, E. T, on the Anatomy 

 of the Thorax in Insects, and 

 on its functions during flight. . 391 

 Description of an hi- 

 therto unpublished 

 species of Buccinum, 

 {Humphrey sianiDn) . . 398 

 Birds found in the vicinity of 

 Geneva, a catalogue of, by 



Prof. Necker 89 



Birds, migration of. Dr. Jenner 



on, 125, 351 



Birds, rare or foreign, taken in 



the British Isles 131, 134, 276, 



278, 585, 586, 589 



Birds, Pnniatran 543 



Blcnnius polaris 118 



Boinbus arcticus 118 



Boinbyx Sabini 118 



Bonaparte, Mr. C. on new species 

 of Proccllariae 4g5 



