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. WESTWOOD, 
F. L. S., &c. . . 251 
V- On the Comparative Elevation of Testacea in the Alps. By EDWARD 
FORBES, . - v - 7 ... 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, . , : ft i*'. \ ^?. ' && 259 
No. IV. 
I. The Natural History of the British Entomostraca. By WILLIAM 
BAIRD, Surgeon, H .,*. **-*' r <*:..' 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. l ^;.-..} *H&J . 344 
V. Observations on the Raptores of South America. Translated from 
" Voyages dans 1'Amerique Meridionale, par M. ALCIDE D. 
D'ORBIGNY," , s > ,:,;j AVa, i .. f r . 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. '*:-...."'*' .b.- fc;*J-.$I ..*&L--\ *^~' 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 SWAINSOV, F. R. & L. S., &c. 430 
IV. Seme account of the Comparative Anatomy of two species of the genus 
Cevcocebus, 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, V ff^-.^j :./.-, . 450 
