INDEX 



169 



Pediculati, 155 

 Pelagic zone. 47 

 Pennatulidte, 96 

 Phoronis, 111 . 

 Phosphorescence of Alcjo- 



narians, 81 

 ■ — of deep-sea Crustacea, 80 



— of Echinoderma, 81 

 Phosphorescent light in the 



abyss, 24 



— organs of de^p-sea fish, 77 

 Pigment in mucous membranes 



of deep-sea fish, 84. 152 

 Plankton, 52 

 Pleuronectidas, 157 

 Polar currents, 30, 33 

 Polychfeta, 118 

 ' Porcupine,' H.M.S., 8, 9 

 Porifera, 91 

 Pourtales, Count. 10 

 Pres-ure in the abyss, 19 

 Protozoa, 88 

 Pteropod ooze, 39 

 Pycnogonida, 139 



Kadtolaeia, 89 



Radiolarian ooze, 39 



Red mud, 37 



o£E the Brazilian coasts, 



42 

 Rhahdnplenra, 111 

 Ross, Sir James, on the fauna 



of the deep sea, 3 



Salmonid^, 163 

 Sargasso sub-zone, 48 

 Sars, 6, 9, 

 — on Amphipoda, 125 



Sars, on Briniuja, 105 



Schizopoda, 133 



Scopelidffi, 158 



Serolis, 127 



Siphonophora, 92 



Size of deep-sea animals, 85 



— of fish, 153 



Smith, Mr., on Lamellibranchia, 



119 

 Spatangoids, 101 

 Sponges, 91 

 Stebbing, Rev. T. R., on Amphi 



poda, 125 

 SternoptychidEe, 158 

 Stomatopoda, 133 

 Stomiatidai, 162 



• Talisman,' French vessel, 12 

 Teleostei, 149, 154 

 Temperature of the abyss, 28 

 Thomson, Sir WyviUe, on 



Ponrtalesia, 10 

 -^ on Thaumastdcheles, 137 



— on the darkness of the abyss, 

 22 



— on the phosphorescence of 

 the sea, 2G 



Thoracostraca, 133 

 ' Travailleur,' French vessel, 12 

 ' Triton,' H.M.S., 12 

 Tunicata, 140 



Vegetable life, absence of, 42 

 Verrill, on the illumination of 



the abyss, 23 

 'Vittor Pessani,' Italian vessel, 



12 

 ' Voringin,' Norwegian vessel. 



14 



