List of Illustrations. 



FACING PAGE 



PLATE VII. BURROW OP PHOLAS SEA PEN , 39 



" VIII. LUMINOUS STAR FISHES. From 4,500 feet deep . . 29 



" IX. LUMINOUS BEETLES, ETC 47 



" X. ANATOMICAL DETAILS . 53 



" XI. LUMINOUS BEETLE, iu burrow of Mole Cricket ... 59 



XII. THE LANTERN FLY 63 



" XIII. LUMINOUS MUSHROOMS LUMINOUS INSECT .... 137 



" XIV. SPIDER CRAB ' .75 



XV. LUMINOUS CRUSTACEANS 79 



XVI. CHAIN OP SALPS 89 



' ' XVIII. CHIASMODUS SUN-FISH PLAGIODUS HARPODON 



BERYX .97 



XIX. LUMINOUS FISH. From depth of 8,100 feet . . . .103 



XX. LUMINOUS FISH 115 



