26 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Statiox 16 

 August 13, 1928; 36° 47' N, 46° 31' W; bottom depth, 5287 m; 32 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 



50 100 Depth of tow, m 



25.9 24.4 19.9 Density (o-.p) 23.9 



36.1 36.3 36.4 Hydrogen-ion cone. (pH) 8.24 



Calanus minor 



Calocalanus pavo 



styliremis 



Candacia bispinosa 



Centropages furcatus 



Clausocalanus arcuicornis. 

 Corycaeus crassiusculus. . . 



limbatus 



speciosus 



Euchaeta marina 



Farranula carinata 



gibbula 



rostrata 



Haloptilus longicornis 



Lucicutia flavicornis 



Macrosetella gracilis 



Macrosetella oculata 



Mecynocera clausi 



Microsetella norvegica f 



rosea 



Miracia eflferata c 



Neocalanus gracilis f 



tenuicornis 



Oithona similis 



spinirostris 



Oncaea minuta 



venusta 



Paracalanus parvus 



Pontellina plumata r 



Pontellopsis perspicax r 



Pseudocalanus minutus 



Rhincalanus nasutus 



This is the third Gulf Stream station. The surface tempera- 

 ture was 1° higher than before and dropped almost 24 per cent 

 in 100 meters; the sahnit>' and hydrogen-ion concentration 

 were high and nearly constant. The vertical distribution was 

 very different: 14 species at the surface, 18 in the 50-meter 

 tow, and 14 in the 100-meter tow. Nineteen species (60 per 



cent) were confined to a single tow, and onl>' 1 appeared in 

 all three tows. This is another record in which every one of 

 the species is well represented. Again the 3 species of Farra- 

 nula and 1 species of Corycaeus appeared at the surface; the 

 other 2 Corycaeus species with Oithona and Oncaea were 

 confined to the two deeper tows. 



Station 17 

 August 15, 1928; 33° 42' N, 42° 21' \V; bottom depth, 4492 m; 28 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 



Acartia longiremis 



Calanus helgolandicus 



minor c 



Candacia aethiopica r 



bispinosa r 



simplex f 



Centropages furcatus r 



violaceus r 



Clausocalanus arcuicornis f 



Corycaeus crassiusculus c 



speciosus c 



Euchirella brevis 



Farranula carinata 



gibbula f 



Farranula rostrata c f 



Haloptilus longicornis r 



Lubbockia squillimana r r 



Lucicutia clausii . . f 



flavicornis c c 



Macrosetella oculata r 



Microcalanus pusillus . . f 



Microsetella norvegica r 



Neocalanus gracilis f 



tenuicornis f 



Oithona similis . . c 



spinirostris . . c 



Oncaea media . . a 



venusta . . a 



This is the first station in the Sargasso Sea whose waters 

 show a relatively high salinity. Eighteen species were found 

 in the 50-meter tow and 15 in the 100-meter tow; only 5 

 species were found in both tows, 23 (82 per cent) being con- 



fined to one tow. The surface tow from this station was lost. 

 Corycaeus and Farranula appeared in both the deeper tows, 

 but Oithona and Oncaea were confined to the 100-meter tow. 

 Candacia and Centropages were found only in the 50-meter tow. 



