LISTS OF SPECIES BY STATIONS 



157 



Station 149 

 October 21, 1929; 21° 18' N, 138° 36' VV; bottom depth, 5320 m; 71 species 



Depth of tow, m 

 Temperature, °C 

 Sahnity, 0/00 

 X'olume of tow, cm^ 



Acartia danae 



longiremis 



Acrocalanus gibber 



gracilis 



longicornis 



Aetideus armatus 



Calanus minor 



propinquus 



Calocalanus pavo 



plumulosus 



styliremis 



Candacia aethiopica 



bispinosa 



simplex 



Canthocalanus pauper. . . . 

 Centropages calaninus. . . . 



elongatus 



violaceus 



Clausocalanus arcuicornis. 



furcatus 



Clytemnestra scutellata. . . 

 Copilia denticulata 



quadrata 



Corycaeus crassiusculus. . . 



speciosus . . 



typicus 



Euchaeta acuta 



marina 



Euchirella curticauda 



Farranula carinata 



gibbula 



rostrata 



Haloptilus longicornis 



plumosus 



Heterorhabdus papilliger. . 

 Labidocera detruncata. . . 



Lubbockia aculeata 



squillimana 



Lucicutia clausii 



flavicornis 



Macrosetella gracilis 



Mecynocera clausi 



Megacalanus longicornis. . . . 

 Microcalanus pusillus 



pygmaeus 



Microsetella rosea 



Miracia efferata 



Neocalanus gracilis 



robustior 



tenuicornis 



Oithona plumifera 



similis 



spinirostris 



Oncaea curta 



minuta 



notopa 



subtilis 



venusta 



Onchocalanus nudipes, n. sp. 

 Paracalanus aculeatus 



parvus 



Phaenna spinifera 



Pleuromamma robusta 



Pontellina plumata 



Pseudocalanus minutus 



Sapphirina metallina 



opalina 



salpae 



Scolecithri.x danae 



Undinula darwinii 



vulgaris 



The temperature was high at the surface and fell 3° in 

 the 100 meters; the salinity and hydrogen-ion concentration 

 changed but little. Twenty-one species were found at the 

 surface, 42 in the 50-meter tow, and 57 in the 100-meter tow. 

 Thirty-five species (50 per cent) were each confined to a 



single depth and 13 appeared at all three depths. The three 

 tows were of practically the same length, but the volume of 

 the 100-meter tow was 50 per cent larger than that of either 

 of the others. Candacia, Corycaeus, Farranula, Oithona, and 

 Oncaea were each found at all three depths. 



