LIST OF ILLUSTRATIONS 

 IN THE TEXT 



FIG. PAGE 



1. The Common Lobster {Homarus gammarus), Female, 



FROM THE Side ...... y 



2. One OF THE Abdominal Somites of the Lobkter, with 



ITS Appendages, separated and viewed from in 

 Front ....... g 



3. Third Maxilliped of Lobster - - - - 11 



4. Walking Legs of Lobster - - - - 12 



5. Appendages of Lobster in Front of Third Maxil- 



liped ----..- 13 



6. Dissection of Male Lobster, from the Side - 16 



7. Gills of the Lobster, exposed by cutting away the 



Side-flap of the Carapace (Branchiostegite) - 18 



8. First Larval Stage of the Common Lobster, x 4 - 28 



9. Side - view of Rostrum of (A) Common Lobster 



{Homarus gammarus) and (B) American Lobster 

 [Homarus americanus) - - - - - 32 



10. The "Fairy Shrimp" [Chirocephalus diaphanus), Male. 



X 2 35 



11. Estheria ohliqua, One of the Conchostraca - - 36 



12. Daphnia pulex, a Common Species of "Water-flea." 



Much enlarged - - - - - -37 



13. Shells of Ostracoda. Much enlarged - - 38 



14. Cyclops alhidus, a Species of Copepod found in Fresh 



Water - - - - - - - 39 



15. Nebalia bipes. Enlarged - - - - - 44 



16. Mysis relicta, One of the Mysidacea, Enlarged - 47 



17. Gnathophausia willemoesii, One of the Deep-sea Mysi- 



dacea. Half Natural Size - - - - 48 



8, Diastylis goodsiri, One of the Cumacea. Enlarged - 49 



ix 



