LISTS OF SPECIES BY STATIONS 



57 



Station 47 

 November 23, 1928; 14° 07' S, 111° 50' VV; bottom depth, 3080 m; 53 species 



Depth of tow, m 

 Temperature, "C 

 Salinity, o/oo 

 \'olume of tow, cm^ 



Acartia danae . . c 



negligens r 3 



Acrocalanus gracilis r 



Calocalanus pavo r f 



plumulosus . . 1 



styliremis . . r 



Candacia simplex 3 r 



Centropages calaninus . . 1 



Clausocalanus arcuicornis f 



furcatus a 



Clytemnestra scutellata 2 



Corycaeus agilis 



flaccus . . 1 



lautus 1 



limbatus f f 



longistylis 2 1 



pumilus 



speciosus . . f 



typicus . . f 



Eucalanus monachus . . 3 



Euchirella brevis . . 1 



Farranula carinata c a 



concinna 2 c 



curta . . f 



gibbula c 



gracilis . . f 



rostrata a a 



Haloptilus longicornis. . . 

 Labidocera detruncata. . 



Mecynocera clausi 



Microcalanus pygmaeus. 

 Microsetella norvegica. . 



rosea 



Neocalanus gracilis 



Oithona attenuata 



similis 



spinirostris 



Oncaea curta 



minuta 



notopa 



similis 



tenella 



Paracalanus parvus 



pygmaeus 



Pontella danae 



securifer 



Pseudocalanus minutus. 

 Rhincalanus cornutus. . . 

 Sapphirina auronitens. . 



nigromaculata 



Temora discaudata 



stylifera 



Undinula darwinii 



Only 1° of difference in temperature in the upper 100 

 meters, and almost no difference in salinity and hydrogen- 

 ion concentration. The three tows were of equal length, and 

 the volume of the surface tow was from four to four and a 

 half times that of the others. Thirty-two spscies (60 per cent) 

 were each confined to a single level and 7 were present at all 

 three levels. The vertical distribution was 25 species at the 



surface, 34 at the 50-meter level, and 23 at the 100-meter level. 

 Candacia and Eucalanus were each again reduced to a single 

 species. Corycaeus was represented by 8 species and Farranula 

 by 6, all well distributed in the three tows. But not a specimen 

 of any of the 5 species of Oncaea appeared at the surface, 

 although one of them, 0. minuta, was abundant in the 50- 

 meter tow. 



