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 
BAIHD, 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, . .fc>' t t-ahi<t 520 
V. Notes regarding the distinctive habits of the Scotch Phocae 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. part i. (Or the British Flora, Vol. ii. Part i.) 
By W. J. HOOKER, LL.D, F. R. S., &c. . -5 V 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, . . V i 102 
No. II. 
I. De PHistoire Naturelle des Cetaces, ou Recueil et Examen des faits 
dont se compose PHistoire Naturelle des ces Animaux. Par M. F. 
CUVIER, . ^--. ... 174 
II. A Monograph of the Family Ramphastidae. By J. GOULD, F. L. S. 
Three Parts, folio, MJ !: . 187 
PERIODICALS. 
The Entomological Magazine, V'.rifc :K '* '%. '' 192 
Annales des Sciences Naturelles. Zoologie, MM. AUDOUIN et MILNE- 
EDWARDS. Botanique. MM. AD. BRONGNTAKT et GUILLEMIN, 193 
Archiv fur Anatomic physiologic und Wissenschaftliche Medicin, &c. Von 
JOANNES MULLER, . J . :; ;>OMM t f jgg 
