CONTENTS. Vll 



XLVI. Contributions towards a General History of the Marine 

 Polyzoa. By the Rev. Thomas Hincks, B.A., F.R.S. (Plates 

 XVI. & XVII.) 376 



XLVII. On the Flint Nodules of the Trimming-ham Chalk. By 

 W. J. Sollas, M.A., F.R.S.E., F.G.S., Professor of Geology in Uni- 

 versity College, Bristol. (Plates XIX. & XX.) 384 



XLVIII. Additional Observations on the Antipatharia. By H. 

 J. Carter, F.R.S. &c 395 



XLIX. Description of a new Species of Turbo, and a Note on the 

 Occurrence of Rossia Oicenii on the Coast of North Wales. By 

 Edgar A. Smith 397 



L. A new Cetonia from Madagascar. By Charles 0. Water- 

 house 399 



LI. Description of a new Species of Arvicola from Gilgit. By 

 John Scully ib . 



Ncio Book : — Memoirs of the Geological Survey of India. Palseon- 

 tologia Indica, &c. Tertiary and Upper Cretaceous Fauna of 

 Western India. Ser. XIV. Vol. I. 1. Sind fossil Corals and 

 Alcyonaria. By P. M. Duncan, M.B. (Lond.), F.R.S., 

 V.P.G.S 400 



On some Facts with regard to the first Phenomena of the Develop- 

 ment of the Osseous Fishes, by M. L. F. Henneguy ; Completion 

 of the Biology of the Aphides of the Galls of the Poplar (Pem- 

 phigus bursa rim, Linn.), by M. J. Lichtenstein; On the Ciliated 

 Embryo of Bilharda, by M. J. Chatin ; Note on Argiope capsida, 

 by J. Gwyn Jeffreys, LL.D., F.R.S. ; Notes on the Early Stages 

 of some Polychsetous Annelides, by E. B. Wilson ; The Rhyth- 

 mical Character of the Process of Segmentation, by W. H. 

 Brooks 402—408 



NUMBER XXXVI. 



LII. On the Anatomy of a new Parasitic Worm found in the In- 

 testine of a Bat (Megaderma from). By Dr. John Denis Mac- 

 donald, F.R.S., Inspector-General R.N. (Plate XXI.j 409 



LIII.*Note on Pterygodermatites Macdonaldii, the Type of a new 

 Order of Vermes. By G. E. Dobson, M.A., M.B., &c 412 



LIV. On the Minute Structure of the Recent Heteropora neoze- 

 lanica, Busk, and on the Relations of the Genus Heteropora to Monti- 

 culipora. By II. Alleyne Nicholson, M.D., D.Sc, F.R.S.E 414 



LV. On the Northern Species of Buccinum. By J. Gwyn Jef- 

 freys, LL.D., F.R.S 423 



I; VI. Diagnoses of new Shells from Lake Tanganyika and East 

 Africa. By Edgar A. Smith 425 



LVII. Notes on the French exploring Voyage of ' Le Travailleur ' 

 in the Bay of Biscay. By the Rev. A. M. Norman, M.A., F.L.S., &c. 430 



