Contents. v 



VIII. Characters and Descriptions of the Dipterous Insects indigenous to Bri- 

 tain. By James Duncan, M. W. S., &c. &c. . Page 453 

 IX. Contributions to the Natural History of Ireland. By William 

 Thompson, Esq. Vice-President of the Natural History Society of 

 Belfast, ..... 459 

 X. Descriptions of two new species of Opuntia ; with remarks on the Struc- 

 ture of the Fruit of Rhipsalis. By Rev. J. S. Henslow, M. A. 

 Professor of Botany in the University of Cambridge, . 466 



VI. 



I. Notices of British Fungi. By Rev. M. J. Berkeley, M. A., F. L. S. 507 

 II. The Natural History of the British Entomostraca. By William 



Baird, Surgeon, H. C. S. . . . 514 



III. Contributions to British Ichthyology. By R. Parnell, M. D. 526 



IV. Miscellanea Zoologica. By George Johnston, M. D. Fellow of 



the Royal College of Surgeons of Edinburgh, . . 529 



V. Notes regarding the distinctive habits of the Scotch Phocas or Seals. 



By James Wilson, F. R. S. E., &c. . . . 539 



REVIEWS AND CRITICAL ANALYSIS. 



No. I. 



I. Iconographia della Fauna Italica. Di Carlo Luciano Bonaparte, 



Principe de Musignano. Folio, ... 82 



II. The English Flora. By Sir J. E. Smith, M. D., F. R. S., &c. The 

 British Flora. By W. J. Hooker, LL. D., F. R. S., &c. The 

 English Flora, Vol. v. parti. (Or the British Flora, Vol. ii. Part i.) 

 By W. J. Hooker, LL.D, F. R. S., &c. . . 93 



PERIODICALS. 



The Edinburgh New Philosophical Journal, . . .99 



The Magazine of Natural History, and Journal of Zoology, Botany, Mine- 

 ralogy, Geology, and Meteorology, . . . 100 

 Annales des Sciences Naturelles, .... 101 

 American Journal of Sciences and Arts, . . . 102 



No. II. 

 I. De l'Histoire Naturelle des Cetaces, ou Recueil et Examen des faits 

 dont se compose l'Histoire Naturelle des ces Animaux. Par M. F. 



CUVIER, ..... 174 



II. A Monograph of the Family Ramphastidas. By J. Gould, F. L. S. 



Three Parts, folio, . " . . . 187 



PERIODICALS. 



The Entomological Magazine, . . . . 192 



Annales des Sciences Naturelles. Zoologie, MM. Audouin et Milne- 

 Edwards. Botanique. MM. Ad. Brongntakt et Guillemin, 193 

 Archiv fur Anatomie physiologie und Wissenschaftliche Medicin, &c. Von 

 Joannes Muller, ..... 196 



