List of Illustrations. 



PACING PAGE 



Plate VII. Burrow of Pholas — Sea Pen *^" 



" VIII. Luminous Stab Pishes. Prom 4,500 feet deep . 39 



" IX. Luminous Beetles, etc. ^ 



" X. Anatomical Details ■ . 53 



I 

 " XI. Luminous Beetle, in burrow of Mole Cricket . , 59' 



" XII. The Lantern Ply 63 



" XIII. Luminous Mushrooms — Luminous Insect .... IS' 



" XIV. Spider Crab 7£! 



" XV. Luminous Crustaceans 



" XVI. Chain of Salps g'J 



XVIII. Chiasmodus — Sun-Fish — Plagiodus — Hakpodon — 



Bebtx ()• 



^ 



XIX. Luminous Fish. Prom depth of 8,100 feet . . 



103 



XX. Luminous Fish j^- 



