iv CONTENTS. 



Page 

 On the Saliva of Dolium galea, by Prof. Troschel ; Note on the Oc- 

 currence of the Harvest Mouse in Cornwall, by C. W. Peach ; 

 A Notice of the Baradla Cavern, near Agtelek, in Hungary, by 

 Dr. Schmidl ; On the Austrahan Dugong {Halicore australis), by 

 Mr.Fairholnie 75—80 



NUMBER CXVI. 



Vni. Hectocotylus-hrmsition in Argonauta and Tremoctopus ex- 

 plained by Observations on similar Formations in the Cephalopoda in 

 general. By Professor Japetus Steenstrup. (With two Plates.) 81 



IX. On the Occurrence of the genus Cryptoceras in Silurian Rocks. 

 By E. J. Chapman, Professor of Mineralogy and Geology in University 

 College, Toronto ^ 114 



X. List of Coleoptera received from Old Calabar, on the West 

 Coast of Africa. By Andrew^ Murray, Edinburgh 117 



XI. Notes on the Indian species of Lycium. By T. Anderson, 

 Esq., M.D., Oude Contingent 126 



XII. On the Development of Purpura. By Wm. B. Carpenter, 

 M.D., F.R.S., F.G.S., F.L.S 127 



XIII. Observations on the Larvae of the Trematode Worms. By 



Dr. P. DE FiLippi 129 



XIV. Observations on the Development of the Star-fishes. By 



J. Roren and D. C. Danielssen 132 



New Books : — System der Ornithologie West Afrika's von Dr.G.IIart- 

 laub. — Populai- History of the Aquarium of Marine and Freshwater 

 Animals and Plants, by George Brettingham Sowerby, F.L.S. — 

 A Popular History of British Crustacea; comprising a Familiar 

 Account of their Classification and Habits; by Adam White, 

 Assistant, Zoological Department, British Museum 136 — 141 



Proceedings of the Royal Society; Botanical Society of Edinburgh. 141 — 164 



On the Causes of the Opening and Closing of Stomates, by Hugo von 

 Mohl; Descriptions of new Norwegian Annelides, by M. Sars; 

 On Gladiolus imbricatus, Linn. ; Notes on some new and rare 

 Diatomaceae from the Stomachs of Ascidise, by Mr. George Nor- 

 man ; On the Vascular System ofAnodonta, by Prof. Langer. 1 54 — 1 60 



NUMBER CXVII. 



XV. Researches on the mode in which Gum-Tragacanth is formed. 

 By Hugo von Mohl 161 



