CONTENTS. 
Page. 
Introduction 153 
Chapter I. The lobsters and allied Crustacea; their zoological relations, habits, development, 
and use as food 155 
Natural history of the Crustacea 155 
Development of the Crustacea 162 
Family life in crayfish 167 
II. The American lobster; its economic importance and general habits 169 
Geographical range 170 
History and importance of the lobster fisheries in brief 170 
Capture, transportation, and acclimatization of the lobster 173 
Habits and instincts of the adult lobster 177 
Migratory instincts 180 
Movements of tagged lobsters 180 
Movements off Cape Cod and at Woods Hole 18 1 
Optimum temperature 182 
r Influence of light and nocturnal habits 183 
Burrowing habits 184 
Food and preying habits 185 
Cannibalism 188 
Review of the instincts and intelligence of the adult lobster 188 
Color in the adult 191 
III. Giant lobsters 194 
Greatest size attained by the lobster 194 
IV. Molting 200 
The skin and shell 200 
Periods, conditions, and significance of molting 201 
The molting act 204 
Withdrawal of the big claws 206 
Molting of the “hammer claw” in the snapping shrimp Alpheus 207 
Changes in the skeleton preparatory to molting 207 
The gastroliths or stomach-stones 208 
Hardening of the new shell 21 1 
Relation of weight to length in adult 212 
Proportion of waste to edible parts in the lobster 214 
V. Enemies of the lobster 215 
Predaceous enemies 215 
Parasites and messmates 213 
Diseases and fatalities of the lobster 217 
VI. Anatomy of the lobster, with embryological and physiological notes 219 
Body 219 
Internal skeleton and head 220 
Appendages 222 
Mouth parts 227 
The slender legs 229 
Central nervous system 230 
Peripheral stomato-gastric system 231 
Sense organs 232 
