INDEX TO VOL. IV. 



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

 newly characterized, are distinguished by the Italic character. 



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Page 



Acanthurus Jiavescens • 40 



strigosus •••... ... 41 



Affinities of the orders of Mam- 

 malia 485 



Affinity of transultation 486 



Africa, Animals of Northern 385 



Africa, South, Dr. A. Smith's Con- 

 tributions to the Natural His- 

 tory of 433 



Agama Douglasii 493, deviates 



from the type of the genus 493 



Sinaita 393 



Alcyonium hirsutum 418 



America, Mr Vigors on some spe- 

 cies of Birds from the North- 

 west Coast of 352 



Anacampsis, a new genus ofTor- 



tricidae 495 



Analogy and affinity confounded 



by M, Virey 49 



Anas Craccoides 97 



Rafflesii 99 



rutila, a British species .... 1 32 



specular ioides 98 



specularis 98 



tjrophasianus 357 



Anatomy, comparative, import- 

 ance of in Zoology 483 



Mr. Yarrell's Notes in . . 314 

 Anodon, a new genus of Serpents 443 



Anodon typus 443 



Anomites thecarius, its ligament 267 

 Anser albifrons, notes of a dissec- 

 tion of 321 



Canadensis, do 321 



Magellanicus ^ ........ 97 



Page 

 Ants and Aphides, observations 

 on their Loves, by Gen. Hard- 



wicke 113 



Antelopes 262, 264 



Mr. Woods Notice of a 



new species of 524 



Anthracotherium Silistrense .... 512 



Antilope Addax 264,390 



montana 390 



personata 524 



Saemmeringii 390 



Aphides and Ants, General Hard- 



wicke's Observations on 113 



Aplodontia, a new genus of Ro- 



dentia, Dr. Richardson on 333 



Aplodontia leporina 335 



Aptenodytes chrysocome, junior? 101 

 Arachnida, Note on the impreg- 

 nation of, by Mr. Westwood.. 231 



Area gradata 365 



grandis 365 



Ardea stellaris, Notes of a dissec- 

 tion of 320 



Argonauta, Mr. Broderip's Obser- 

 vations on the Animals hitherto 



found in the shells of 57 



Additional note on, 



by Mr. Broderip 224 



Eggs of the animal 

 found in the shell of, described 



by Dr. Roget 64 



Arrangements, Dichotomous and 

 Quinary, in Natural History, 



Mr. Colebrooke on 43 



Natural and artifi- 

 cial, how distinguished...... 4Q4 



