PELAGIC PLANT LIFE 



365 



Coccolithophoridae : — 



PontosphcEra huxleyi, Lohm. 

 SyracosphcBra echinata, n.sp. 



,, spinosa, Lohm. . 



„ ampulla, n.sp. 



,, IcEvis, n.sp. 



„ blastula, n.sp. 



„ pulch7-a, Lohm. . 



„ robusta, Lohm. . 



Calyptrosph(e7-a oblonga, Lohm. 

 Coccolithophora leptopora, Murr. and Blackm. 



,, pelagica, \Vallich 



„ wallichii, Lohm. 



,, lineata, n.sp. 



RhabdosphcEra styliger, Lohm. . 



„ daviger, Murr. and Blackm. 



DiscosphcBra fiibifer, Murr. and Blackm. 

 Scyphosphcera apsteini, Lohm. . 

 Calciosolenia murrayi, n.sp. 

 Ophiaster for7nosiis, n.sp. 

 Undetermined coccolithophoridfe ^ . 



Total coccolithophoridse . 



Pterospermataceai : — 



Pterosperma disci/liis, n.sp. 

 Peridineae : — 



Protoditiium . 



Amphidiniuni gracile 



Oxytoxum scolopax . 

 ,, hjorti, n.sp. 



Di/iophysis, sp. 



Exuvicel/a, sp. 



Other peridineae 



Total peridineae 



Diatoms : — 



Nitzschia seriata 



sp. 



Rhizosolenia calcar avis . 

 Thalassiothrix frauenfeldi 

 Silicoflagellates : — 

 Didyocha fibula 

 Other plant-cells 



Total plant-cells 



Cells per 

 50 m. 

 300 

 287 

 193 



93 

 147 



160 



80 



593 



33 



73 



7 



7 



33 



107 



3007 



57ii 



litre. 

 75 m- 



173 

 123 



33 



40 



83 



3 



100 



67 



370 



7 



53 



37 



7 



93 



23 



13 



7 



497 



[729 



1403 



3708 



I have previously given a list from this station of the species 

 found in a vertical haul with the silk net. The number of 



1 Mainly young stages, which could not be determined with certainty; to a great extent 

 they belong no doubt to Coccolithophora leptopora. 



