CONTENTS

Scheme of the Classification adopted in this Book.

MOLLUSCA
CHAPTER I
Introduction—Position of Mollusca in the Animal Kingdom—Classification—Originof Land and Fresh-water Mollusca [1]
CHAPTER II
Land and Fresh-water Mollusca, their Habits and General Economy [23]
CHAPTER III
Enemies of the Mollusca—Means of Defence—Mimicry and ProtectiveColoration—Parasitic Mollusca—Commensalism—Variation [56]
CHAPTER IV
Uses of Shells for Money, Ornament, and Food—Cultivation ofthe Oyster, Mussel, and Snail—Snails as Medicine—Prices Given for Shells [96]
CHAPTER V
Reproduction—Deposition of Eggs—Development of the FertilisedOvum—Differences of Sex—Dioecious and HermaphroditeMollusca—Development of Fresh-water Bivalves [123]
CHAPTER VI
Respiration and Circulation—The Mantle [150]
CHAPTER VII
Organs of Sense: Touch, Sight, Smell, Hearing—The Foot—TheNervous System [177]
CHAPTER VIII
The Digestive Organs, Jaw, and Radula: Excretory Organs [209]
CHAPTER IX
The Shell, its Form, Composition, and Growth—Designation ofits Various Parts [244]
CHAPTER X
Geographical Distribution of Land and Fresh-water Mollusca—ThePalaearctic, Oriental, and Australasian Regions [277]
CHAPTER XI
Geographical Distribution of Land Mollusca (continued)—TheEthiopian, Nearctic, and Neotropical Regions [328]
CHAPTER XII
Distribution of Marine Mollusca—Deep-sea Mollusca and theirCharacteristics [360]
CHAPTER XIII
Class Cephalopoda [378]
CHAPTER XIV
Class Gasteropoda—Amphineura and Prosobranchiata [400]
CHAPTER XV
Class Gasteropoda (continued): Opisthobranchiata and Pulmonata [427]
CHAPTER XVI
Classes Scaphopoda and Pelecypoda [444]
BRACHIOPODA (RECENT)
CHAPTER XVII
Introduction—Shell—Body—Digestive System—Body Cavity—CirculatorySystem—Excretory Organs—Muscles—NervousSystem—Reproductive System—Embryology—Habits—Distribution—Classification [463]
BRACHIOPODA (FOSSIL)
CHAPTER XVIII
Introduction—Division I. Ecardines—External Characters—InternalCharacters—Division II. Testicardines—ExternalCharacters—Internal Characters—Synopsis of Families—StratigraphicalDistribution—Phylogeny and Ontogeny [491]