xliv 
CONTENTS. 
ECHINODERMATA. 
Page 
Introduction 1 
List of Publications 2 
Anatomy, Histology, Morph- 
ology, Phylogeny 17 
Embryology and Asexual Re- 
production 33 
Physiology and Biology .... 41 
Distribution 44 
By E. A. Minchin, B.A. 
Page 
Systematic and Classification . 40 
Holothurioidea . , 47 
Echinoidea 49 
Asteroidea 72 
Ophiuroidea 78 
Crinoidea 79 
Cystidea 90 
Blastoidea 91 
VERMES. By Arthur Willey, B.So. 
List of Publications 1 
Faunistic 26 
General Subjeot, including 
Anatomy 27 
Polychaeta 27 
Oligochaeta 29 
Hirudinea 33 
Gephyrea 37 
Rotifera 38 
Gastrotricha . . 
Nemertea . . . 
Enteropneusta 
Turbellaria . . 
Acanthocephala 
Nematoda . . . 
Cestoda 
Trematoda . . . 
Mesozoa .... 
39 
40 
40 
41 
44 
44 
46 
48 
50 
OCELENTERATA. By S. J. Hickson, M.A., D.Sc. 
List of Papers 1 
Morphology 7 
Faunistic 10 
Coral Reefs 11 
Physiological 11 
Systematic — 
Hydrozoa 11 
Anthozoa 11 
SPONGLE. 
By E. 
A. Minchin, B.A. 
Introduction 
. . 1 
Systematic — 
List of Publications .... 
. . 2 
Calcarea 
Anatomy, Embryology, Physi- 
Hexactinellida 
ology, Biology 
. . 7 
Tetractinellida 
Distribution — 
Monaxonida 
Faunistic 
. . 19 
Keratosa 
Geological 
. . 20 
Incertae sedis 
PROTOZOA. 
By Cecil Warburton, M.A. 
List of Publications .... 
. . 1 
Systematic — 
Anatomy, Biology 
. . 8 
Gymuomyxa 
Geographical Distribution . 
. . 8 
Corticata 
Incertae sedis 
Index to Genera and Subqenera described as New, &c. 
