CONTENTS. Vll 



Page 

 remarks on the Nature and Affinities of that genus. By Prof. Owen, 

 F.R.S 329 



XLVII. Remarks on a Collection of Australian Drawings of Birds, 

 the Property of the Earl of Derby. By H. E. Strickland, Esq., M.A. 333 



XLVI1I. Notes on the Botany of Sicily. By John Ball, B.A., 

 M.R.I.A 338 



XLIX. Contributions to the Ichthyology of Australia. By John 

 Richardson, M.D., F.R.S. &c. (Continued.) 352 



L. Observations on the Growth, Reproduction, and Species of the 

 Branched Freshwater Conferva?. By Arthur Hill Hassall, Esq.... 359 



LI. On some new Insects from Western Africa. By the Rev. F. 

 W. Hope, F.R.S., F.L.S. (Continued.) 364 



LI I. Some remarks on the Soft-billed Duck of Latham. By George 

 Robert Gray, Esq , 369 



LIII. Remarks on the species of Desmidium. By John Ralfs, Esq., 

 M.R.C.S. (With a Plate.) 372 



LIV. Note on the Saw-Fly (Lyda inanita) the subject of M. Huber's 

 paper in the preceding Number. By J. O. Westwood, Esq., F.L.S., 

 E.S. &c.„... 376 



LV. On the Blood and Fibre. By John William Griffith, M.D., 

 F.L.S 377 



Proceedings of the Royal Society ; Royal Society of Edinburgh ; Zoo- 

 logical Society ; Botanical Society of London ; Botanical Society 

 of Edinburgh 378—403 



On Worms in the Blood of a Dog ; On the Cotton called " Nurma," by 

 A. Burn, Esq. ; On Dipkya sagittaria ; Experiments on the Tor- 

 pedo; Meteorological Observations and Table 403 — 408 



NUMBER LXXII. 



LVI. Notes on the Salmon. By John Blackwall, Esq., F.L.S.... 409 



LVII. Short description of a Bottle-nose Whale stranded upon the 

 coast of the co. Louth in the autumn of 1840. Communicated to the 

 Nat. Hist. Society of Dublin, by O. B. Bellingham, M.D 414 



LVIII. On Substances inclosed in Mocha-stones. By Karl Muel- 

 ler, Physician at Detmold. Translated and communicated by the 

 Rev. M. J. Berkeley. (With a Plate.) 415 



LIX. Contributions to the Ichthyology of Australia. By John 

 Richardson, M.D., F.R.S. &c. (Continued.) 422 



LX. Descriptions of British Freshwater Confervae, mostly new, with 

 observations on some of the Genera. By Arthur Hill Hassall, Esq. 428 



LXI. On the Sacculi of the Polygastrica. By John William 

 Griffith, M.D., F.L.S. &c 438 



LXII. On the DiatomacecB. By John Ralfs, Esq., M.R.C.S. (With 

 Plates.) , 447 



