LIST OF ILLUSTRATIONS. 



Ptrosoma. and DrjTEB (Plate XVII.) Facing Title, 



Sea Bottom. 1,500 metres, or one-quarter of mile in depth. . Facing Page 1 



TAOIsa PAGB 



Plate I. Ltjminotjs Protozoans — Luminous Poktions op Noc' 



TILTJCA 3 



" II. M. DE TUBSAN EBADIUa BY LiGHT OF PhOSPHOK- 



E8CENT Sea 7 



" III. LcTMiNous Sea Jelly — Luminous Coral— Pruning- 



KNIFE Fish 11 



" IV. Luminous Sea Jelly and Mollusk 13 



" V. Venus' Girdle ... ... . - 15 



" VI. Apolemia — Cleodora — Praya 43 



