CONTENTS. V 



Page 



XIX. Note on Diazona and Syntethys. By W. A. IIebdman, 



D.Sc, Professor of Natural History in University College, Liverpool 1G5 



XX. Contributions towards a General History of the Marine 

 Polyzoa, 1880-91. — Appendix. Bv the Rev. Thomas Hincks, 

 B.A., F.E.S ' 169 



XXI. On the Molluscan Genera Cydostoma and Pvmatias and the 

 Criuoid Genus Comaster and Family Comatulidcc. By the Rev. 

 Canon A. M. Nokjxan, F.R.S 176 



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

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

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

 Laboi-atory. tPlate XI.) 182 



A>;« Book : — Contribui^-oes a Paleontolopia do Brazil. (With the 

 original in English.) By Charles A. White, M.D., Palseon- 

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

 Archivos do Museu Nacional do Rio Janeiro, vol. vii 18o 



The Development of the Central Nervous System of the Pulmonata, 

 by Dr. Ferd. Schmidt ; The Development of Daphnia from the 

 Summer Ovum, by J. Lebedinsky, Assistant at the University of 

 Odessa; Note on Euherrichia, Grote, by A. G. Butler ; Aniilope 

 triangularis, a new Genus, by R. Lj'dekker 186 — 102 



NUMBER XLV. 



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

 Xenopns. By Dr. Hector F. E, Jungebsen, of Copenhagen .... 193 



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

 the Echinodermata. By Prof. F. Jeffrey Bell, M.A 206 



XXV. Descriptions of some new Geophilidce in the Collection of 

 the British Museum. By R. I. PococK. (Plate XII.) 215 



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

 which have been referred to it, upon My&ella 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 

 MoUusks from South Africa. By James Cosmo Melvill, M.A., 

 F.L.S., and John H. Ponsonby, F.Z.S 237 



XXVIII. Descriptions of Two new Species of Lycanidxs 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 



