INDEX 



A<:!TINIARIA, 30, 93 



— two remarkable genera of, 15 

 Aegir, 15 



Agassiz, A., on colour of Coelen- 

 tera, 65 



— on Echinoidea, 101, 103 

 Agassiz, L., on board the 



' Hassler,' 12 

 'Albatross,' American vessel, 15 

 Alcyonaria, 95 



— phosphorescence of, 81 

 Amphipoda, 124 

 Anemones of deep water, 36, 92 



— two remarkable genera of, 

 15 



Annelida, 117 

 Ascidia composite, 146 

 - salpiformes, 147 



— simplices, 142 

 Asteroidea, 104 



Barriers of temperature, 32 



Bathynomns, 129 



Beddard, F. E., on Isopoda, 127 



Benthos, 53 



Berycidas, 154 



' Blake,' American vessel, 12 



Blue mud, 42 



Brachiopoda, 115 



Brachyura, 188 



Bris'mga, 9, 105 



BucLanan's experiment, 19 



P. H., on Gri- 



lls 



20 



H.M.S., voyage 



Carpenter, 



no^dea, 100 

 Cephalodiscus. 

 Cephalopoda, 

 ' Challenger,' 



of, 12 

 Cirripedia, 130 

 Coelentera, colour of, 65 



— of deep sea, 91 



Colour of the deep-sea fauna 

 59,66 



— of the deep-sea fish, 60 

 Copepoda, 124 



Corals, 94 

 Crinoidea, 99 

 Crustacea, 123 



— colour of, 63 



Darkness of the abyss, 22 

 Diatom ooze, 39 

 Dipnoi, 149 



Echinoderma, 99 



— colour of, 64 

 Echinoidea, 101 

 Eels, 165 

 Elasipoda, 106 

 Elasmobranchii, 148, 153 

 Eryonidfe, 135 



Eyes of abysmal animals, 67 



— of deep- sea cru&tacea, 72 



