90 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 70 

 January 13, 1929; 13° 53' 8, 77° 54' W; bottom depth, 4742 m; 42 species 



Depth of tow, m 

 Temperature, °C 

 SaHnity, o/oo 

 Volume of tow, cm' 



Acartia danae 



Acrocalanus gracilis. . . . 



Aetideus armatus 



Calanus propinquus. . . . 

 Calocalanus plumulosus. 

 Candacia norvegica 



pachydactyla 



Canthocalanus pauper. . 

 Clytemnestra rostrata. . 



scutellata 



Corycaeus crassiusculus. 



pumilus 



robustus 



speciosus 



Eucalanus attenuatus. . . 



crassus 



elongatus 



Euchaeta marina 



Euchirella intermedia. . . 

 Haloptilus longicornis. . . 



oxycephalus 



Macrosetella gracilis. . . . 



Mecynocera clausi 



Microsetella norvegica. . 



rosea 



Neocalanus gracilis 



Oithona attenuata 



plumifera 



similis 



Oithonina nana 



Oncaea curta 



media 



minuta 



similis 



venusta 



Paracalanus parvus 



Pseudocalanus minutus. 

 Sapphirina angusta 



auronitens 



nigromaculata 



opalina 



Scolecithricella minor. . . 



The surface temperature was again high but dropped 

 almost 9° (41 per cent) in the 100 meters; the salinity was 

 high and constant; the hydrogen-ion concentration dimin- 

 ished in the two deeper tows. Thirteen species were recorded 

 at the surface, 21 in the 50-meter tow, and 32 in the 100- 

 meter tow. Twenty-six species (62 per cent) were each re- 

 stricted to a single tow and 8 were present in all three tows. 

 The Eiicalatius species were especially abundant in the 100- 



meter tow, and Calanus in all three tows, more especially at 

 the surface. Numerals were again very much in evidence in 

 the records, and IS of them were single specimens. Two 

 species of Corycaeus were present at the surface, 1 of them 

 in abundance, but the other 2 species were found only in the 

 deepest tow. Oncaea was well divided among the three tows. 

 The 4 Sapphirina species were each represented by a single 

 specimen taken in the 50-meter tow. 



