Part 7. CRUSTACEA. 



CONTENTS. 



General 265 



Habits and behavior 265 



Physiology 265 



Temperature, physiological effect 266 



Nutrition 266 



Pathology 266 



Diseases and pests 266 



Enemies 266 



Embryology 266 



Culture 266 



Crabs 266 



Crawfish 267 



Lobster 267 



Shrimp 267 



Fisheries 267 



United States 267 



Crabs 267 



Crawfish 268 



Lobster 268 



Shrimp 268 



Europe 268 



Crabs 268 



Lobster 269 



Asia 269 



Preservation 269 



Crabs 269 



Lobster 269 



Shrimp 269 



Legislation for lobster 269 



Geographical distribution 269 



United States 269 



General . 269 



Alaska 269 



North Carolina 269 



Texas 270 



New England 270 



Lake Superior 270 



Porto Rico 270 



Japan 270 



Oceanica 270 



Hawaiian Islands 270 



Philippine Islands 270 



264 



