LISTS OF SPECIES BY STATIONS 



"5 



Station 98 

 April 30, 1929; 0° 18' X, 173° 59' W; bottom depth, 5599 m; 72 species 



Depth of tow, m 

 Temperature, °C 

 Sahnity, o/oo 

 Volume of tow, cm^ 



Acartia danae 



Acrocalanus gibber 



gracilis 



longicornis 



monachus 



Calanus minor 



tonsus 



Calocalanus plumulosus. . . 

 Candacia bispinosa 



longimana 



nor\'egica 



simplex 



truncata 



Canthocalanus pauper. . . . 

 Centropages calaninus . . . . 

 Clausocalanus arcuicornis . 

 Clytemnestra rostrata. . . . 



scutellata 



Copilia denticulata 



quadrata 



Corycaeus crassiusculus. . . 



f urcifer 



longistylis 



pumilus 



robustus 



speciosus 



typicus 



Eucalanus attenuatus 



elongatus 



Euchaeta acuta 



marina 



Euchirella brevis 



F"arranula carinata 



curta 



gibbula 



gracilis 



Farranula rostrata 



Haloptilus longicornis. . 

 Labidocera detruncata. . 



Lucicutia clausii 



Macrosetella gracilis. , . , 



oculata 



Mecynocera clausi 



Microcalanus pusillus. . . 



pygmaeus 



Microsetella rosea 



Neocalanus gracilis 



robustior 



Oithona attenuata 



fallax 



plumifera 



similis 



spinirostris 



Oncaea conifera 



media 



minuta 



venusta 



Pachos punctatum 



tuberosum 



Paracalanus parvus 



Pontellina plumata 



Pontellopsis armata. . . . 

 Pseudocalanus minutus. 

 Rhincalanus cornutus. . . 

 Sapphirina angusta 



auronitens 



metallina 



nigromaculata 



opalina 



Scolecithrix danae 



Undinula caroli 



darwinii 



a 

 c 



29 

 a 



2 

 2 



The temperature, salinity, and h\drogen-ion concentration 

 showed but little variation at the three depths. Thirty-two 

 species were found at the surface, 51 in the 50-meter tow, 

 and 41 in the 100-meter tow. Thirt\-se\en species (50 per 

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

 in all three tows. Corycaeus, Oithona, Oncaea, and Sapphirina 

 were well distributed at all three depths, but Farranula did 

 not appear at all in the deepest tow. Candacia, Euchaeta, and 

 Undinula were confined to the two deeper tows. The surface 



tow contained the only record for Pontellopsis armata and 

 the 50-meter tow' one of the very few records for Pachos 

 tuberosum. The three tows were of exactly the same length, 

 but the volume of the 50-meter tow was 66 per cent, and of 

 the 100-meter tow 100 per cent, larger than that of the 

 surface tow. About one-quarter of the abundance records are 

 expressed in numerals from 1 to 5, but in the other three- 

 quarters enough species are designated as abundant or com- 

 mon to more than offset this scarcit\-. 



