IV 



Bateson, William, M.A., F.B.S., F.Z.S., Fellow of St. Johu's 

 College, Cambridge. 

 Exhibition of specimens of the Common Pilchard (Clupea 

 jnlchardus), showing variation in the number and size of the 



scales 164 



On two Cases of Colour-variation in Flat-fishes illus- 

 trating principles of Symmetry. (Plate XVII.) 246 



Exhibition of specimens and drawings of a Phytophagous 

 Beetle, in illustration of discontinuous variation in colour. 391 



Beddaed, Frank E., M.A., F.B.S., Prosector to the Society. 

 Notes upon the Tadpole of Xenopus Icevis (Dactylethra 

 capensis). (Plate XIII.) 101 



On Two new Genera, comprising Three new Species, of 

 Earthworms from "Western Tropical Africa 379 



On some Points in the Visceral Anatomy of Omitho- 

 rhynehus ' io 



Beddard, Frank E., M.A., F.E.S., &c, and Mitchell, P. 

 Chalmers, M.A., F.Z.S. 



On the Anatomy of Palamedea comuta 538 



Bell, F. Jeferey, M.A., Sec. R.M.S., F.Z.S., Professor of 

 Comparative Anatomy in King's College, London. 



Notes on Three Species of River- crabs of the Genus 

 Thelphusa, from Specimens collected in Eastern Africa by 

 Dr. J. W. Gregory, Mr. H. H. Johnston, C.B., and Mr. F. 

 J. Jackson 166 



On the Echinoderms collected during the Voyage of 

 H.M.S. ' Penguin' and by H.M.S. ' Egeria,' when surveying 

 Macclesfield Bank. (Plates XXIII.-XXVII.) 392 



* 



Notice of the acquisition by the Natural-History Museum 



of some Specimens of remarkable Corals of great size from 

 North-west Australia 694 



