xlii 
CONTENTS. 
VERMES. By P. Chalmers Mitchell, M.A. 
, Page 
Introduction 1 
List of Publications 2 
References. Systematic Classi- 
fication 17 
Gasterotricha 17 
Enteropneusta 17 
Chaetopoda 17 
Archiannelida 23 
Gephyrea 23 
Hirudinea 23 
Page 
Rotifera 23 
Nemertea 24 
Trematoda 24 
Cestoda 25 
Turbellaria 25 
Chaetognatha 26 
Nematoda 26 
Acanthocephala 27 
List of References. Subject 
Matter. Classification ... 27 
CCELENTERATA. By W. E. Hoyle, M.A., F.R S.E. 
List of Publications 1 
Anatomy and Physiology ... 11 
Geographical Distribution . . . 14 
Ctenophora 17 
Ilydrozoa 17 
Anthozoa 26 
H. Latter, B.A. 
Systematic 6 
Ilexactinellida 6 
Demospongiae 6 
SPONGIiE. By O. 
List of Publications 1 
Subject-Index 4 
Classification 5 
PROTOZOA. By Cecil Warburton, B.A. 
List of Publications ...... 1 
Systematic 9 
Gymuomyxa 10 
Corticata 13 
Morphology and Life-History . 16 
Physiology and Development . 19 
Palaeontology 20 
Classification 21 
Geographical Distribution . . 21 
Index to Genera and Subgenera described as New, &c. 
