CONTENTS. V 



Page 



XVIII. Prodromus of a Sj'stem of the Calcareous Sponges. By 

 Ernst Hackel 170 



XIX. On the Parasitism of Rhipiphorus paradoxus. By T. Al- 

 GEBNON Chapman, M.D. 191 



XX. Concluding Observations on the Parasitism of Bhipiphorus 

 paradoxus. By Frederick Smith, Assistant in the Zoological 

 Department of the British Museum 198 



XXI. Hackel on the Relationship of the Sponges to the Corals. 

 By Wm. S. Kent, F.Z.S., F.R.M.S., of the Geological Department, 

 British Museum 204 



XXII. Descriptions of some new Species of Birds from Southern 

 Asia. By Arthur, Viscount Walden, P.Z.S. &c 218 



XXIII. List of the Bones of Seals and Whales in the Colonial 

 Museum, Wellington, New Zealand. By Dr. James Hector, F.R.S. 

 With Notes by Dr. J. E. Gray, F.R.S. ' 220 



New Books : — Index to the Fossil Remains of Avcs, Oniithosauria, 

 and Beptilia, horn, the Secondary System of Strata, arranged in 

 the Woodwardian Museum of the University of Cambridge, 

 by H. G. Seeley, of St. John's College, Cambridge. With a 

 Prefatory Notice by the Rev. A. Sedgwick, LL.D., &c. &c. — 

 Memoire sur les Ascoboles, par M. E. Boudier 225, 22G 



On the Genus Asterostoma, belonging to the Family Echinocorijdea;, 



by M. G. Cotteau ; Sars Fund '. '2.30—232 



NUMBER XXVIII. 



XXIV. On the Structure and Development of the Antheridium in 

 Ferns. By Dr. L. Kny. (Plate VI.) 233 



XXV. On Additions to the Coleopterous Fauna of the Cape-Verde 

 Islands. By T. Vernon Wollaston, M.A., F.L.S 245 



XXVI. Notes on the Structure of the Crinoidea, Cystidea, and 

 Blastoidea. By E. Billings, F.G.S., Palaeontologist of the Geolo- 

 gical Survey of Canada 251 



XXVII. Note on an undescribed Fossil Fish from the Newsham 

 Coal-shale near Newcastle-upon-Tyne. By Albany Hancock, 

 F.L.S., and Thos. Atthey 2G6 



XXVIII. On a new Species of Sagitta from the South Pacific {S. 

 tricuspidata). By Wm. S. Kent, F.Z.S., F.R.M.S., of the Geological 

 Department, British Museum 268 



