CONTENTS. ix 



Page 

 shelled Polygastrica from Patagonian Guano, by Prof. Ehrenberg ; 

 Extensibility of Membrane and Muscle in the Serpent Tribe ; 

 Observations on the Nummulites, by Messrs. Jolie and Leymerie ; 

 Description of the Caligus Stromii, by W. Baird, M.D., F.L.S. &c. ; 

 Fossil Infusoria in Amber ; Obituary — Carl Johan Schonherr ; 

 Meteorological Observations and Table 389 — 400 



NUMBER VI. 



XLII. On a proposed new Order of Gasteropodous Mollusca. By 

 Joshua Alder and Albany Hancock. (With two Plates.) 401 



XLIII. Notes, &c, on the genus of Insects Anthonomiis ; with a de- 

 scription of one new species. By John Walton, F.L.S 416 



XLIV. Some Notes on the Botany of Sinde. By Capt. N. Vicary, 

 2nd European Regiment 420 



XLV. Reply to Mr. Smith's Remarks on Dr. Mantell's Account 

 of the Ventriculites 435 



XLVI. Reports on the Progress of Physiological Botany. No. 4. 

 On the Multiplication of Vegetable Cells by Division. By Arthur 

 Henfrey, F.L.S. &c 436 



XLVII. Descriptions of y/p/iirfes. By Francis Walker, F.L.S.... 443 



XLVIII. Corrections of "Critical Remarks on Mr. Gray's Cata- 

 logue of Mammalia and Bii'ds presented by B. H. Hodgson, Esq., to 

 the British Museum," Ann. and Mag. N. H. vol. xx. p. 313. By E. 

 Blyth, Curator to the Museum of the Asiatic Society, Calcutta 454 



New Books: — Recherches sur lesAnimaux Fossiles, par L.de Koninck. 

 — Monographia Heliceorum Viventium, sistens Descriptiones sy- 

 stematicas et criticas omnium hujus familise generum et specierum 

 hodie cognitarum, Auctore Ludovico PfeifFer, Dr.Cassellana...457 — 460 



rroceedings of the Linnasan Society; Botanical Society of Edin- 

 burgh ". 460—465 



On some Microscopic Organisms found in the Stomach of a Peruvian 

 Freshwater Fish, by Prof. Ehrenberg ; Discovery of the Maxillary 

 Organs of the Iguanodon ; Description of a new British Mould, 

 by George Johnston, M.D. &c. ; Meteorological Observations and 

 Table 465—469 



Index 470 



Ann, is Mag. X. Hid. St-r. '<l. Vol. i. 



