xii THE LIFE OF CRUSTACEA 



FIG. PAGE 



57. A WATER-FLEA (Daphnia pulex], FEMALE, WITH EPHIP- 



PIUM CONTAINING TWO "RESTING EGGS." X 2O 



58. Bythotrephes longimanus, FEMALE, WITH EMBRYOS IN THE 



BROOD-SAC, x 12 - 169 



59. Diaptomus wenileus, FEMALE, x 25 171 



60. Asellus aquations, FEMALE, x 4 - - 173 



61. MAP SHOWING THE DISTRIBUTION OF CRAYFISHES - 175 



62. A WELL SHRIMP (Niphargus aquilex}. x 7 - 185 



63. THE SEA-SLATER (Ligia oceanica}. ABOUT TWICE NATURAL 



SIZE - 200 



64. STRUCTURE OF THE BREATHING ORGANS OF Porcellio 



scaber - 20 



65. Armadillidium vulgare. x 2^ - 203 



66. Two BRANCHES OF A CORAL (Scriatopora) SHOWING 



"GALLS" INHABITED BY THE CRAB Hapalocarcinus 

 marsupialis. ON THE RIGHT THE FEMALE CRAB, 



EXTRACTED FROM THE GALL AND FURTHER ENLARGED 211 



67. Hyperia galba, FEMALE. ENLARGED - 213 



68. A, THE CRAB Melia tessellata CLINGING TO A BRANCH OF 



CORAL, AND CARRYING IN EACH CLAW A LIVING SEA- 

 ANEMONE ; B, ONE OF THE CLAWS FURTHER ENLARGED 



TO SHOW THE WAY IN WHICH THE ANEMONE IS HELD 2l6 



69. THE COMMON PEA CRAB (Pinnotheres pisum), FEMALE. 



NATURAL SIZE - 217 



70. Cirolana borealis. ABOUT TWICE NATURAL SIZE - 219 



71. A, FRONT PART OF BODY OF A PRAWN (Spirontocaris 



Polaris], FROM ABOVE, SHOWING ON THE RIGHT SIDE 

 A SWELLING OF THE CARAPACE CAUSED BY THE 

 PRESENCE OF THE PARASITE Bopyroides hippolytes IN 

 THE GILL CHAMBER ; B, THE FEMALE PARASITE 

 EXTRACTED AND FURTHER ENLARGED ; C, THE MALE 

 PARASITE ON SAME SCALE AS THE FEMALE - - 222 



72. A FISH-LOUSE (Caligus rapax], FEMALE, x 5 - 225 



73. STAGES OF DEVELOPMENT OF Lerncea branchialis. F is 



SLIGHTLY, THE OTHER FIGURES GREATLY, ENLARGED - 226 



74. STAGES OF THE LIFE-HISTORY OF Hamocera dance, ONE 



OF THE MONSTRILLID^ - - 



75. FREE - SWIMMING STAGES OF Sacculina carcini. MUCH 



ENLARGED ----- - 232 



