CONTENTS TO VOLUME I. 



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PAGE 



Animal Life 



Protozoa ....••• 



Sponges 



CcELENTERATES ....-• 1' 



EcHINODERMS 



Worms 52 



mollusc-like animals ^3 



Molluscs '' 



acephals 



Gasteropods *•" 



Heteropods ....•••••••••• -*-'-'•' 



Pteropods *"" 



Cephalopods 



Arthropods 12 ^ 



Crustacea ± - Jl 



Spiders, Mites, and Scorpions !•'•' 



Centipedes and Millipedes . "" 



Insects •"'•' 



Bristle-Tails and Spring-Tails 1,;: 



Cockroaches, Crickets, and Locusts 1^5 



Dragon-Plies and their Allies • • 1^5 



Beetles 194 



Ants, Wasps, and Bees 216 



Bugs 2M 



Plies 255 



Butterflies and Moths 265 



900 



Some Doubtful Forms - 10 



Vertebrates ......•••••••■• -l 



The Tunicates and the Lancelet 290 



Lampreys and Hag-Fishes - jVO 



Sharks and Skates ....••• 



The True Fishes 304 



Lung-Fishes 356 



Batrachia ' 3o 



Salamanders 359 



Frogs and Toads 363 



Ccecilians 3G8 



