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 — 100 
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 Antlionomus ; 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 
XLV 1 1. Descriptions of Aphides. By Francis Walker, F.L.S.... 443 
XLVIII. Corrections of “Critical Remarks on Mr. Gray’s Cata- 
logue of Mammalia and Birds 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 
Neiv Books : — Recherches sur lesAnimaux Fossiles, par L.de Koninck. 
— Monographia Heliceorum Viventium, sistens Descriptiones sy- 
stematicas et criticas omnium hujus'familiEe generum et specierum 
hodie cognitarum, Auctore Ludovico Pfeiffer, Dr.Cassellana.,.457— 460 
Proceedings of the Linnsean 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 
'NUMBER VI. 
Table 
465—469 
Index 
470 
Ann, Mag. N. Hist. Ser. 2. Vol. i 
b 
