CONTENTS. V 



Page 

 Memorandum on the Animal of Scissurella crispata, by Lucas Barrett, 

 F.G.S. ; Notes on the Marine Fauna of Weymouth, by William 

 Thompson; Meteorological Observations and Table 206 — 208 



NUMBER XCIX. 



XVI. On the House Ant of Madeira. By Professor O. Heer, of 

 Zurich. Translated from the original by R. T. Lowe, M.A. (With 



a Plate.) 209 



XVII. Characters of seventeen new forms of the Cyclostomacea 

 from the British Provinces of Burmah, collected by W. Theobald, jun., 

 Esq. By W. H. Benson, Esq 225 



XVIII. Descriptions of three newly discovered species oi Araneidea. 



By John Blackwall, F.L.S 233 



XIX. On some species oiEpilobium. By Charles C. Babington, 

 M.A., F.R.S. &c 236 



XX. On the Mechanism of Aquatic Respiration and on the Struc- 

 ture of the Organs of Breathing in Invertebrate Animals. By Thomas 

 Williams, M.D. Lond 247 



XXI. Notes on Permian Fossils : — Palliobranchiata. By William 

 King, Professor of Mineralogy and Geology in Queen's University, 

 Ireland (Q. C. Gal way); Corresponding Member of the Natural History 

 and Medical Society of Dresden, &c. (With a Plate.) 258 



XXII. On Scissurella crispata. By William Clark, Esq. ... 269 



XXIII. Further Notices of Piedmontese MoUusca. By J. Gvtyn 

 Jeffreys, Esq., F.R.S 2/1 



New Books : — The Natural History of the Tineina, by H. T. Stainton, 

 assisted by Prof. Zeller and J. W. Douglas. — Sylloge Generum 

 Specierumque Cryptogamicarum quas in variis operibus descriptas 

 iconibusque illustratas, nunc ad diagnosim redactas, nonnullasque 

 novas interjectas ordine systematico disposuit C. Montague, 

 D.M. &c 2/2—279 



Proceedings of the Zoological Society ; Botanical Society of Edin- 

 burgh 279—285 



On the Earliest Stages in the Development of Pelagia noctiluca, by 

 Dr. A. Krohn ; Description of a new species of Swift ; Meteoro- 

 logical Observations and Table 285—288 



