150 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 141 

 October 5, 1929; 29° 02' N, 161° 11' W; bottom depth, 5667 m; 56 species 



Depth of tow, m 

 Temperature, °C 

 Sahnity, o/oo 

 \'olume of tow, cm^ 



Acartia danae 



Acrocalanus gibber 



graciHs 



longicornis 



Calanus minor 



Calocalanus pavo 



styHremis 



Candacia bispinosa 



simplex 



Centropages calaninus . . . . 

 Clausocalanus arcuicornis. 



furcatus 



Clytemnestra scutellata. . . 

 Copilia denticulata 



quadrata 



Corycaeus crassiusculus. . . 



lautus 



longistylis 



pumilus 



speciosus 



Eucalanus attenuatus 



Euchaeta acuta 



marina 



Euchirella curticauda 



Farranula carinata 



gibbula 



rostrata 



Labidocera detruncata. . . . 



Macrosetella gracilis 



oculata 



Mecynocera clausi 



Megacalanus longicornis. 

 Microcalanus pusillus. . . . 



Microsetella rosea 



Miracia efferata 



Neocalanus gracilis 



robustior 



tenuicornis 



Oithona attenuata 



plumifera 



similis 



Oithonina nana 



Oncaea media 



minuta 



notopa 



venusta 



Paracalanus aculeatus. . . 



parvus 



pygmaeus 



Pareuchaeta tonsa 



Pontella tenuiremis 



Pseudocalanus minutus. . 

 Sapphirina auronitens. . . . 



nigromaculata 



Scolecithrix danae 



Undinula darwinii 



a 

 1 

 c 



f 

 19 



The temperature was high at the surface and dropped 1° 

 at the 50-meter level; the salinit)- and hydrogen-ion con- 

 centration were practically the same at both depths. Twenty- 

 seven species were taken at the surface and 40 in the 50- 

 meter tow. Forty-fi\e species (80 per cent) each appeared in 

 one tow and not in the other, and 11 were present in both 



tows. Although shorter than the surface tow, the 50-meter 

 tow had a volume 50 per cent larger. Corycaeus, Farranula, 

 Oithona, and Oncaea each appeared in both tows, but Can- 

 dacia and Euchaeta were not present in the surface tow. 

 Farranula carinata was especiall)' abundant in the surface 

 tow. 



