S8 



DEPTHS OF THE OCEAN 



murrayi, for which Koefoed and I propose the name Bathy- 

 microps regis, and an ophidiid not yet determined). All these 

 fishes, if we except, perhaps, Bat/iymicrops regis, were prob- 

 ably captured while the trawl was being hauled in. There were 

 thus no undoubted bottom -fish in this long haul with our 

 large appliance, and taking everything into consideration, 



we had caught 

 extremely little. 

 Chapter VII. 



deals more fully 

 with the signific- 

 ance of this result. 

 We were interested 

 to find a fragment 

 of a sea-pen [Um- 

 bellula gihitheri. 

 Fig. 70) which con- 

 tinued shining 

 brightly on the 

 deck, thus furnish- 

 ing fresh proof of 

 the well-known 

 fact that some of 

 the lower animals 

 from the profound- 

 est depths emit 

 light. 



While towing 

 the trawl we made 

 some interesting 

 observations on the 

 pelagic animal life, 

 as we put two tow- 

 nets on the trawl 

 wire, the one being 

 towed at about 40 

 metres, and the other at about 2000 metres, and during the 

 whole of the day we took samples from the surface. 



The tow-net at 40 metres contained a mass of red copepods, 

 which were not observed at the surface during the daytime, but 

 suddenly appeared as soon as it grew dark, soon after 6 p.m. 

 The surface plankton comprised Physalia, a great many molluscs, 

 such as lanthina and Pterotrachea, one of the remarkable little 



Umbelhila giintheri (phosphorescent). 



