CONTEXTS. V 



Page 

 XXIII. Ou Liitkema, a new Genus of Opliiui'oidea from Discovery 

 Bay. Bv Prof. P. Martin Duncan, M.B. Lond., F.R.S., &c. 

 (Plate IX.) 188 



New Book: — A Manual of Zoology for the Use of Students, with a 

 General Introduction on the Principles of Zoolooy. Bv Henry 

 Alleyne Nicholson, M.D., D.Sc, M.A., Ph'.D., F.E.S.E., 

 F.G.S 193 



On a new Opisthoccelous Dinosaur, by Dr. E. D. Cope ; Oa the Pro- 

 pagation and Metamorphoses of the Suctorial Crustacea of the 

 Family Cymothoada, by M. Schiodte ; On Aoenardia Pn'ei, a 

 Gigantic Nemertean of the West Coast of France, by M. A. 

 Giard ; Observations and Experiments on the Migrations of 

 Filnria rhytipleurites, a Parasite of Coclcroaches and Rats, bv M. 

 Osraan Galeb 194—199 



NUMBER IX. 



XXIV. On the Occurrence in North America of rare Extinct Ver- 

 tebrates found fragmentarilv in England. By Prof. R. Owen, C.B., 

 F.R.S., &c. (Plates X. & XI.) 201 



XXV. Characters of undescribed Species of Jffa/iic««(E. By Joseph 



S. Baly, F.L.S 223 



XXVI. On the Nauplms and Pupa Stage of Suctoria. By Prof. 

 Alfred Giard 233 



XXVII. Studies on Fossil Sponges. — II. Lithistid£e. By Karl 

 Alfred Zittel. (Plate VIII.) 235 



XXA'III. Preliminary Notices of Deep-Sea Fishes collected dm'ing 

 the Voyage of H.M.S. ' Challenger.' By Dr. Albert GDnther, 

 F.R.S., Keeper of the Zoological Department, British Museum .... 248 



XXIX. On the Mode of Development of the Tentacles in the 

 Genus Hydra. By M. C. Mereschkowsky. (Plate XIT.) 251 



XXX. Descriptions of new Species of Rhopalocera from Central 

 and South America. By F. Du Cane Godman and Osbert Salvin. 257 



XXXI. On the Identity of the Ophiuran Genera OpMopleura, 

 Danielssen and Koren, and Liltkenia, Duncan, with Notes on the 

 Species. By Prof. P. Martin Duncan, M.B. Lond., F.R.S., &c. . . 266 



Proceedings of the Geological Society .' 268 



Probable Distribution of a Spider by the Trade-Winds ; On the 

 Relation of Amoeba quadrilineata and Amoeba verrucosa, by Dr. 

 Leidy ; On the Fossil Mammalia of South America, by M. P. 

 Genais 270, 271 



