CONTENTS. V 



Page 



XIX. Note on l)ioz<»m and Si/iifcfhi/s. By W. A. IIkiidman, 

 D.Sc, I'toIcssov of Natuial History in Univi'ivity College, Liverpool 10') 



XX. Contributions towards a General History of the Marine 

 Pulvziia, 1880-91. — Appendix. By the Kev. Thoma.s Hincks, 

 B..\., F.li.S 109 



XXI. On the Molluscan Geni'ra Ci/clostomn and Pomafias and the 

 Criuoid Genu.s Vonuister and Family t'omatuluhe. liy tiie Hev. 

 Canon A. M, Nohman, F.li.S 170 



XXn. Additions to the Invertebrate Fauna of St. Andrews Bay. 

 By FuNKST W. L. Holt, Assistant Naturalist to the Royal Dublin 

 Society's Fishery Survev, and late of the St. Andrews Marine 

 Laboratory. ( Plate XI.)" 182 



I\ew BooJx : — Cnntribu^'oes a Paleontolopia do Brazil. (Witli the 

 orijiinal in English.) By Charles A. AN'iiite, M.D., Palason- 

 tologist to the Geological Suivey of the United States, &c. — 

 Arcliivos do Museu Nacional do Rio Janeiro, vol. vii 18-"> 



The Development of the Central Nervous System of the Pulmonata, 

 by Dr. Ferd. Sclimidt ; T!ie Development of Daj)h)iia from the 

 Summer Ovum, by J. Lebedinsky, As>istant at the University of 

 Odessa; Not<; on Eitlierrichia, Grote, by A. G. Butler ; Aiitilope 

 triangularis, a new Genus, by R. Lydekker 180 — 11J2 



NUMBER XLV. 



XXIII. Remarks on the Structure of the Hand in Pipa and 

 Xenopus. By Dr. Hkctok F. E. Jungersen, of Copenhagen .... 193 



XXIV. On the Arrangement and Inter-relations of the Classes of 

 the Echinodermata. By Prof. F. Jeffrey Bell, M.A 200 



XXV. Descriptions of some new Geophilidee in the Collection of 



the British Museum. By R. I. Pocock. (Plate XII.) 21o 



XXVI. Remarks upon the Genus Pythina of Hinds and the Species 

 which have been referred to it, upon Mysella of Angas, and the 

 Description of a new Species of Mylitta. By Edgar A. Smith. 

 (Plate XIII. A.) 227 



XXVII. Descriptions of Nine new Terrestrial and Fluviatile 

 Mollusks from South Africa. By James Cosmo Melyill, M.A., 

 F.L.S., and John H. Ponsonby, F.Z.S 2;J7 



XXVIII. Descriptions of Two new Species of Lyccvnidce from 

 West Africa, in the Collection of Mr. Philip Crowley. By Emily 

 Mary Sharpe 240 



XXIX. Notes on some Scorpions collected by Mr. J. J. Walker, 

 with Descriptions of Two new Species and a new Genus. By R. I. 

 Pocock. (Plate XIII. B.) 241 



