iv Contents, 



II. The Natural History of British Zoophytes. By George Johnston, 



M. D. Fellow of the Royal College of Surgeons of Edinburgh, Page 225 



III. On the Pollan (Coregonus pollan, Thompson,) of Lough Neagh. By 



William Thompson, Esq., Vice-President of the Natural His- 

 tory Society of Belfast, . . , .247 



IV. Descriptions of some new species of Exotic Coleopterous Insects from 



the collection of Sir Patrick Walker. By J. O. Westwoob, 



V. L. S., &c. . . . . . 251 



Y- On the Comparative Elevation of Testacea in the Alps. By Edward 



Forbes, ..... 257 



VI. On the Structure of the Flowers of Adoxa Moschatellina. By the Rev. 

 J. S. Henslow, M. A. Professor of Botany in the University of 

 Cambridge, ..... 259 



No. IV. 

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



Baird, Surgeon, .... 309 



II. Observations on the Germination of Ferns. By Mr J Henderson, 333 



III. Observations on the process of Exuviation in the Common Crab (Can- 



cer pagurus, Linn.) By Jonathan Couch, F. L. S. . 341 



IV. Contributions to the Ichthyology of the Firth of Forth. No. II. By 



Richard Parnell, M. D. • . . 344 



V. Observations on the Raptores of South America. Translated from 

 " Voyages dans l'Amerique Meridionale, par M. Alcide D. 

 D'Orbigny," . . . . .347 



VI. Characters and Descriptions of the Dipterous Insects indigenous to 



Britain. By James Duncan, M. W. S., &c. &c. . 359 



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



the Royal College of Surgeons of Edinburgh, . , 368 



VIII. Remarks on the Reproductive Organs of Pilularia globulifera, and 



the Globules of Chara Vulgaris. By Mr George Dickie, . 382 



No. V. 



I. Observations on the importance of a Local Fauna ; — exemplified in the 



Fauna of Twizel. By P. J. Selby, F. R. S. E., . 421 



II. Observations on the construction of a Local Flora. By H. Cotterel 



Watson, Esq. ..... 424 



III. On the Natural History and Relations of the family of Cuculidae or 



Cuckoos, with a view to determine the series of their variation. By 

 William Swainson, F. R. & L.S., &c. . . 430 



IV. Some account of the Comparative Anatomy of two species of the genus 



Cercocebus, Geoffroy. By P. C. Eyton, Esq. . , 437 



V. The Natural History of British Zoophytes. By George Johnston, 



M. D. Fellow of the Royal College of Surgeons of Edinburgh, 440 



VI. Notes on the Hawfinch (Coccothraustes vulgaris, Cuv.) as observed in 



the vicinity of Epping Forest. By Henry Doubleday, Esq. 448 

 VTI. On Hybrids produced in a Wild State between the Black-Grouse (Te- 

 trao tetrix,) and Common Pheasant (Phasianus Colchicus.) By 

 William Thompson, Esq. Vice President of the Belfast Natural 

 History Society, ... . 450 



