The complete reference of the four publications are: MONOGRAPH OF THE BRITISH NAKED-EYED MEDUSAE: WITH Figures of all the Species BY EDWARD FORBES, F.R.S.; L.S.; AND G.S. PROFESSOR OF BOTANY IN KING’S COLLEGE, LONDON; AND PALAEONTOLOGIST TO THE GEOLOGICAL SURVEY OF THE UNITED KINGDOM. LONDON PRINTED FOR THE RAY SOCIETY. MDCCCXLVIII. PRINTED BY C. AND J. ADLARD, BARTHOLOMEW CLOSE. THE BRITISH MYSIDACEA BY THE LATE PROFESSOR W. M. TATTERSALL, D.Sc., AND OLIVE S. TATTERSALL, B.Sc. LONDON PRINTED FOR THE RAY SOCIETY SOLD BY BERNARD QUARITCH, LTD. 11, GRAFTON STREET, NEW BOND STREET, LONDON, W.1. 1951 LAND AND WATER BUGS OF THE BRITISH ISLES BY T. R. E. SOUTHWOOD Ph.D., B.Sc., A.R.C.S., F.R.E.S. AND DENNIS LESTON F.Z.S., F.R.E.S. WITH 32 COLOURED PLATES BY H. D. SWAIN, M.A., F.R.E.S. 31 BLACK AND WHITE PLATES AND 153 TEXT FIGURES BY P. ENTWISTLE, B.Sc., A.R.C.S.H. M. ENTWISTLE, M.Sc., D.I.C. AND THE AUTHORS FREDERICK WARNE & CO. LTD LONDON & NEW YORK FRESHWATER OSTRACODS Keys and notes for the identification of the species P. A. HENDERSON Electronic version published by Pisces Conservation Ltd, 2002 Peter Henderson Pisces Conservation Ltd IRC House, The Square Pennington, Lymington Hants, SO41 8GN