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COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 91 

 March 27, 1929; 15° 44' S, 160° 25' W; bottom depth, 4937 m; 50 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 

 Volume of tow, cm' 



Depth of tow, m 50 



Density (<rtp) 22.2 22.6 



Hydrogen-ion concentration (pH) 8.30 8.30 



Length of tow, miles 0.6 0.8 



Acartia danae 



Acrocalanus gracilis 



longicornis 



monachus 



Calanus minor 



Calocalanus pavo 



Candacia bispinosa 



Clausocalanus arcuicornis . 

 Copilia denticulata 



quadrata 



Corycaeus agilis 



anglicus 



catus 



clausi 



crassiusculus 



flaccus 



furcifer 



giesbrechti 



lautus 



limbatus 



longistylis 



ovalis 



pacilicus 



speciosus 



typicus 



Euchacta marina 



Euchirclla curticauda 



pulchra 



Farranula carinata 



gibbula 



gracilis 



rostrata 



Labidocera detruncata. . . . 

 Microcalanus pusillus 



pygmaeus 



Microsetella rosea 



Neocalanus robustior 



Oithona plumifera 



similis 



Oncaea curta 



media 



minuta 



similis 



venusta 



Paracalanus parvus 



Pontella lobiancoi 



tenuiremis 



Pseudocalanus niinutus. . . 

 Sapphirina nigromaculata . 

 Scolecithrix danae 



The temperature, salinity, and hydrogen-ion concentration 

 were high and practically the same at both depths. Twenty- 

 seven species were found at the surface and 33 in the 50- 

 meter tow. Forty species (80 per cent) were present in one 

 tow but not in the other, and 10 were found in both tows. 



Corycaeus, with 15 species, was especially abundant at the 

 surface; Farranula, Oithona, and Oncaea were more abundant 

 in the deeper tow. Although the 50-meter tow was here one- 

 third longer than the surface tow, its volume was exactly 

 the same. 



