146 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 137 

 September 18, 1929; 24° 02' N, 145° 33' W; bottom depth, 5208 m; 65 species 



Depth of tow, m 

 Temperature, °C 

 SaHnity, 0/00 

 Volume of tow, cm^ 



Acartia danae 



Acrocalanus gibber 



gracilis 



Aetideus armatus 



Calanus minor 



propinquus 



Calocalanus pavo 



Candacia bispinosa 



simplex 



Canthocalanus pauper . . . . 



Centropages furcatus 



Clausocalanus arcuicornis . 



furcatus 



Clytemnestra rostrata . . . . 



scutellata 



Copilia denticulata 



quadrata 



Corycaeus clausi 



crassiusculus 



longistylis 



pumilus 



speciosus 



typicus 



Eucalanus attenuatus 



elongatus 



monachus 



mucronatus 



Euchaeta marina 



Euchirella brevis 



Farranula carinata 



gibbula 



rostrata 



Gaetanus latifrons 



19 



Haloptilus longicornis. . . . 



plumosus 



spiniceps 



Labidocera nerii 



Lucicutia clausii 



flavicornis 



Mecynocera clausi 



Megacalanus longicornis. 

 Microcalanus pygmaeus. 



Microsetella rosea 



Miracia efferata 



Neocalanus gracilis 



robustior 



tenuicornis 



Oithona similis 



spinirostris 



Oithonina nana 



Oncaea curta 



media 



minuta 



similis 



venusta 



Paracalanus aculeatus. . . 



parvus 



pygmaeus 



Pontella tenuiremis 



Pseudocalanus minutus. . 

 Sapphirina angusta 



metallina 



nigromaculata 



Scolecithrix danae 



Undinula darwinii 



The temperature was high at the surface and dropped 4° 

 in the 100 meters; the salinity increased a trifle with depth, 

 and the hydrogen-ion concentration diminished. Twenty-six 

 species were taken at the surface, 38 in the 50-meter tow, 

 and 45 in the 100-meter tow. Thirty-three species (51 per 

 cent) were each confined to a single tow and 12 were present 

 in all three tows. The 50-meter tow was the shortest of the 



three, but its volume was three times as large as that of 

 either of the others. The 100-meter tow contains the only 

 record for Gaetatuis latifrons, a single female. Corycaeus, 

 Oithona, and Oncaea were distributed at all three depths, but 

 Farranula did not appear in the 100-meter tow, nor Candacia 

 in the surface tow. The bulk of the 50-nieter tow was made 

 up of Neocalanus and Oithona species. 



