CONTENTS. 



1'age 

 pkilus) ursinus, by M. W. Vrolik; On the Nervous System of 

 Insects, by M. Dujardin; Obituary — William Thompson, F.L.S. 

 &c. ; Meteorological Observations and Table 240—248 



NUMBER LII. 



XXI. Notes and Descriptions of a few Brachiopoda; including a 

 Monograph of the French Liasic Spirifers. By Thomas Davidson, 

 Member of the Geol. Soc. of France, &c. (With three Plates.) 249 



XXII. A Catalogue of British Spiders, including remarks on their 

 Structure, Functions, CEconomy, and Systematic Arrangement. By 

 John Blackwall, F.L.S 268 



XXIII. Brief Diagnostic Notices of new Maderan Land Shells. By 



the Rev. R. T. Lowe, M.A 275 



XXIV. On the Gangetic Dolphin. By Dan. Fred. Eschricht, 

 Professor at the University of Copenhagen. From the Danish by 

 Dr.WALLicH, F.R.S 2/9 



XXV. Further Observations on Lej>ton Clarhice. By William 

 Clark, Esq 293 



XXVI. On the Cassidulidce of the Oolites, with descriptions of 

 some new species of that family. By Thomas Wright, M.D. &c. 294 



XXVII. Notices of British Fungi. By the Rev. M. J. Berkeley, 

 M.A., F.L.S., and C. E. Broome, Esq. (With four Plates.) 317 



XXVIII. Rambles in Ceylon. By E. L. La yard 329 



New Books : — Prodromus Florae Batavae. Vol. I. Plantae Vasculares. 

 In sociorum imprimis usum edendum curavit Societas promo- 

 vendo Floras Bataviae studio 340 



Proceedings of the Zoological Society; Botanical Society of Edin- 

 burgh 342—354 



On a new genus of Chitonidce, by Henry and Arthur Adams ; On the 

 Appearance of large Swarms of Butterflies, by M. Ghiliani ; Rare 

 Irish Mollusca, by William White Walpole ; On the Insects inju- 

 rious to the Rape Crops, by M. Ad. Focillon ; Note on a species 

 of Coccus, indigenous to France, which lives on the Common 

 Bean, and appears to be capable of furnishing an abundant Colour- 

 ing Matter which may be used in the Arts, by M. Guerin-Mene- 

 ville ; Obituary — II. N. Turner, Jun. ; Meteorological Observa- 

 tions and Table 355—360 



