xvi LIST OF ILLUSTRATIONS 



FACING PAGE 



Female Velvet Fiddler Crab, with tail drawn down to show 



processes to which the eggs are attached . .120 



Hermit Crab .121 



Hermit Crab removed from Whelk-shell to show soft body . 121 



The Stone Crab, Lithoides maia . . . . . .122 



Galathea squamifera, the so-called " Squat Lobster " . . 122 



A Palanurus, or Crawfish, from Indian waters . . ^ .123 



A Baby Spiny Lobster (Palanurus) 123 



Lobster : Carapace, Cervical Groove, Cephalothorax . .124 



The Common Lobster 125 



Lobsters^under hypnotic condition standing on their heads . 125 



Argulus foliaceous, a parasitic crustacean . . . .124 



Pycnogons . . . . . * . . .124 

 Acorn Barnacles ......... 124 



Stalked or Ship Barnacle .125 



Cypris stage of Barnacle . . . . . . .125 



Ship Barnacle cut open to show animal in shell . . , 125 



The Water Flea (Daphnia) .... :r . ^ 126 



A Copepod (Gegenbauri) , jj . 126 



A Giant Centipede . . . . . f * v , k * $,f j . 127 



Scorpion 127 



Tarantula and Mygale Spiders . . & : . . > 138 



Two female Garden Spiders and a male Spider . . .138 



Wing of Butterfly, showing tile-like arrangement of scales . 139 



Trachea! tubes of Caterpillar . . . . . , 139 



A spiracle or "breathing pore" of Caterpillar . / ./' . 139 



Larva of Privet Hawk Moth .... *.:,< . 142 



American Silk Moth, and cocoons . . . ';&>:. . 142 



Life-history of the Swallow-tail Butterfly . . . .143 



European Emperor Moth . . . . . . .150 



"Old Lady" Moth at rest on tree- trunk . . . .150 



Male Stag Beetle . . . . . < * . . .151 



Male, larva, and female Water Beetles (Dytiscus) . . .156 



The second leg (middle pair) of Dytiscus . . . .156 



Front leg of male Dytiscus Beetle . . . . .156 



