ILLUSTRATIONS 



FACING 

 PAGE 



Four-inch Quad Jelly-fish, Tamoya haplonema, 

 WITH Twelve Live Fish which Were Living 

 Inside it ....... 



Leptocephalus Stage of Bone-fish, Albula vulpes 



Bregmaceros, a Deep-Sea Fish Caught at Sub- 

 merged Light ...... 



Young Batfish, Halieutichthys, Taken at the 

 Surface at Night ...... 



Young Flounder which Floats on the Surface 

 AT Night by Curving its Body into a Cup-shape 



Photograph of Plankton, Collected at 8 p.m 

 April 30, 1927, at Submerged Light 



Christophe's Castle . . . 



Giant Sponge from Lamentin Reef . 



Surface Grating of Giant Sponge 



Section of Giant Sponge Showing Snapping- 

 shrimps and Crabs Living in the Internal 

 Chambers ....... 



Snapping-shrimps from Giant Sponge 



Cardinal Sponge-Fish, Amia, in Bottom of 

 Chimney Sponge ...... 



Cardinal Sponge-fish, Showing Generalized 

 Pigmentation, and Nocturnal Character of 

 Large Eye ....... 



William Beebe after Ascent from Sixty-foot 

 Dive at the Side of Schooner 



Reconstructed View of Soft Ooze and Sea- 

 cucumbers Collected Ten Fathoms Down 



86 

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87 



94 



94 



114 

 115 

 115 



128 

 128 



129 



129 

 136 

 136 



XI 



