LISTS OF SPECIES BY STATIONS 



163 



Station 155 

 November 2, 1929; 4° 51' N, 146° 46' W; bottom depth, 5304 m; 74 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, 0/00 

 X'olume of tow, cm' 



Acartia danae 



longiremis 



negligens 



Acrocalanus gibber 



gracilis 



longicornis 



monachus 



Calocalanus pavo 



styliremis 



Candacia bispinosa 



catula 



norvegica 



simplex 



Canthocalanus pauper. . . . 

 Centropages calaninus. . , . 



elongatiis 



violaceus 



Clausocalanus arcuicornis . 



furcatus 



Clytemnestra rostrata. . . . 



scutellata 



Copilia denticulata 



quadrata 



Corycaeus andrewsi 



crassiusculus 



flaccus 



lautus 



longistylis 



pacificus 



speciosus 



Eucalanus attenuatus 



elongatus 



Euchaeta acuta 



marina 



Euchirella brevis 



curticauda 



Farranula carinata 



19 



Farranula curta f 



gibbula 



rostrata c 



Labidocera detruncata f 



Lucicutia clausii 



flavicornis 



Macrosetella gracilis 



Mecynocera clausi r 



Megacalanus longicornis 



Microcalanus pygmaeus r 



Microsetella norvegica c 



rosea 



Miracia efferata 



Neocalanus gracilis c 



robustior 



tenuicornis c 



Oithona plumifera 



similis a 



Oithonina nana 



Oncaca curta 3 



minuta a 



notopa 



venusta a 



Paracalanus aculeatus 



parvus f 



Pennella sp., copepodid 



Pontclla cristata r 



Pontellina plumata f 



Pseudocalanus minutus 



Rhincalanus nasutus r 



Sapphirina auronitens r 



metallina 



nigromaculata r 



opalina 



Scolecithrix danae 



Undinula caroli 



darwinii 



The temperature was high at the surface and fell only 

 0?5 in the 100 meters; the salinity and hydrogen-ion con- 

 centration also remained practically unchanged. Thirty-four 

 species were captured at the surface, 46 in the SO-meter tow, 

 and 52 in the 100-meter tow. Thirtj'-three species (43 per 

 cent) were each confined to a single depth and 16 were present 



at all three depths. Candacia, Corycaeus, Farranula, Oithona, 

 and Oncaea were present in each of the tows and quite evenly 

 distributed. The 100-meter tow contains the only records for 

 Candacia catula and Pennella during the entire cruise. The 

 latter was in the free-swimming copepodid stage and the 

 species could not be determined. 



