

CONTENTS OF VOL. XVIII. 



[FIFTH SERIES.] 



NUMBER cm. 



Page 



I. On Aphis rumicis, Linn., as a Pest on the Man^el-Wurzel Crops 

 in Shropshire in the Autumn of 1885, and on a Fungus destructive 

 of the same Aphis. By Rev. Wiluam Houghton, M.A., F.L.S., 

 and William Phillips, F.L.S. (Plate III.) 1 



II. Description of a Moth of the Genus Milionia from Borneo. 



By Arthur G. Butleb, F.L.S. &c 7 



III. On some new or imperfectly-known Species of Stromato- 

 poroids. By H. Alleyne Nicholson, M.D., D.Sc, Regius Professor 

 of Natural History in the University of Aberdeen. — Part II. (Plates 



L&ii.) : 8 



IV. The Origin of Metagenesis among the Hydromedusse. By 



W. K. Brooks 22 



V. Endogenous as distinct from Exogenous Division in the 

 Amoeban Rhizopods. By Surgeon-Major Wallich, M.D 30 



VI. Descriptions of Sponges from the Neighbourhood of Port 

 Phillip Heads, South Australia, continued. By H. J. Carter, 

 F.R.S. &c 34 



VII. Prof. E. Ray Lankester's Memoir " I .imiilus an Arachnid," 

 and the Pretensions and Charges founded upon it. By Prof. Carl 

 Claus 55 



VIII. Remarks on Dr. Hamann's Researches in the Morphology 



of the Echinoidea. Bv Prof. P. Martin Duncan, F.R.S. &c 66 



Neio Book .-—Memoirs of the Geological Survey of India. Palfeon- 

 tologia Indica, being Figures and Descriptions of the Organic 

 Remains procured during the Progress of the Geological Survey 

 of India. Ser. x. Indian Tertiar_y and Post-Tertiary Vertebrata. 

 Vol. III. Part 6. Siwalik and Narbada Chelonia. By R. 

 Lydekker, B.A., F.G.S., &c 69 



