36 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 29 

 September 13, 1928; 13° 16' N, 52° 13' W; bottom depth, 5068 m; 37 species 



Depth of tow, m 

 Temperature, ° 

 Salinity, o/oo 



(pH) 





 23.4 

 8.31 



50 

 23.8 

 8.29 



100 



25.5 

 8.21 



Calanus helgolandicus. . 



minor 



propinquus 



Calocalanus pavo 



styliremis 



Candacia bispinosa 



pachydactyla 



Centropages furcatus. . . 

 Clytemnestra scutellata. 

 Corycaeus crassiusculus. 



speciosus 



Euchacta marina 



Farranula carinata 



gibbula 



rostrata 



Haloptilus ornatiis 



spiniceps 



Lucicutia clausii 



Macrosctella gracilis. . . , 



Macrosetella oculata 



Mecynocera clausi 



Megacalanus longicornis. 

 Microcalanus pusillus. . . , 

 Microsetella norvegica. . . 



rosea 



Miracia eflferata 



(Jithona similis 



spinirostris 



Oncaea curta 



media 



minuta 



venusta. . 



Paracalanus parvus 



Phaenna spinifera 



Rhincalanus cornutus. . . . 



Scolecithrix danae 



Undinula vulgaris 



The drop from a high surface temperature was less than 

 0?5 at 50 meters and 4° at 100 meters; the salinity and hydro- 

 gen-ion concentration were again practically unchanged and 

 quite high. Twelve species were found at the surface, 23 at 50 

 meters, and 26 at 100 meters. Seventeen species (46 per cent) 

 were confined to a single depth and only 4 were present at all 



three depths. The 50-meter tow furnished the only Atlantic 

 record for Haloptilus spiniceps, and most of the Corycaeus 

 species were conspicuous for their absence. Two species of 

 Farranula, two of Oncaea, and Corycaeus crassiusculus were 

 confined to the surface tow, and neither species of Oithona 

 appeared there at all. 



