i8 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 5 

 May 25, 1928; 43° 15' N, 31° 32' W; bottom depth, > 2719 m; 21 species 



Depth of tow, 111 

 Temperature, °C 

 Salinity, o/oo 



Acartia clausii f 



longiremis r 



Calanus helgolandicus r 



minor f 



Calocalanus pavo 



Centropages furcatus r 



Clausocalanus arcuicornis c 



Farranula carinata 



gibbula f 



Mecynocera clausi c 



Microsetella norvegica a 



Oithona pluniifera 



setiger 



similis 



Oncaea minuta 



venusta 



Pseudocalanus minutus. 

 Rhincalanus nasutus. . . . 

 Sapphirina angusta 



nigromaculata 



stellata 



The temperature varied only 1?5 in the upper 100 meters, 

 and the salinity and hydrogen-ion concentration were nearly 

 uniform. Fourteen species (66 per cent) were confined to a 



single tow, with 17 at the surface, 8 at 50 meters, and 8 at 

 100 meters. Dexelopment stages were again abundant at all 

 three depths. 



Station 6 

 May 31, 1928; 50° 22' N, 13° 31' W; bottom depth, 2604 m; 21 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 



Acartia clausii 



Calanus helgolandicus. . . . 

 Centropages furcatus 



typicus 



Clausocalanus arcuicornis. 



Macrosetella gracilis 



Mecynocera clausi 



Metridia curticauda 



Microsetella nor\-egica. . . . 



rosea 



Oithona plumifera 



Oithona setiger 



similis 



Oithonina nana 



Oncaea minuta 



venusta 



Paracalanus parvus 



Pseudocalanus minutus. 

 Rhincalanus cornutus. . . 



nasutus 



Sapphirina angusta 



The temperature dropped only 1° in the 100 meters, the 

 salinity remained exactly the same, and the hydrogen-ion 

 concentration diminished \ery slightly. There were 14 species 

 in the surface tow, 7 in the 50-nieter tow, and 12 in the 100- 

 meter tow. Thirteen of the species (62 per cent) were confined 

 to a single depth and only 4 were found at all three depths. 



This is the only record of Centropages typicus for the entire 

 cruise, a fact which, as this is a fairly common species, would 

 seem to imply that it does not often come into the upper 100 

 meters. Here also is established one of the only two records 

 for .Metridia curticauda: the second record was made during 

 the surface tow of Jul> 11, between stations 6 and 7 (f). 



