86 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 66 

 January 7, 1929; 27° 04' S, 84° 01' W; bottom depth, 3812 ni; 45 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 

 V'olume of tow, cm' 



Acartia danae 



negligens 



Acrocalanus gibber 



gracilis 



longicornis 



Calanus propinquus 



Calocalanus pavo 



Candacia bipinnata 



bispinosa 



longimana 



simplex 



Clausocalanus arcuicorni.s. 

 Corycaeus flaccus 



lautus 



longistylis 



pacificus 



pumilus 



typicus 



Euaetidcus giesbrcchti. . . . 



Euchaeta acuta 



Farranula carinata 



rostrata 



('•aidius tcnuispinus 



Heterorhabdus papilliger. 

 Lubbockia squillimana. . . 



Lucicutia flavicornis 



Mecynocera clausi 



Microsetella rosea 



Neocalanus gracilis 



robustior 



tenuicornis 



Oithona attenuata 



fallax 



siniilis 



spinirostris 



Oncaea minuta 



venusta 



Paracalanus parvus 



Pleuromamma gracilis. . . 

 Pseudocalanus minutus. . 

 -Sapphirina auronitens. . . . 



mctallina 



.Scolecithricella bradyi . . . 



.Scolecithrix danac 



Undinula darwinii 



3 

 3 

 c 

 c 

 f 

 c 



f 



c 



f 

 f 



c 



f 



a 

 a 

 f 

 ^ 

 f 



2 

 4 

 f 

 c 



The temperature was moderate and dropped less than 2° 

 in 100 meters; the salinity and hydrogen-ion concentration 

 were again fairlj' high and constant. Nineteen species were 

 found at the surface and 41 in the 100-meter tow, yet the 

 two tows had exactly the same length and volume. The 100- 

 meter tow at this station, the 50-meter tows at stations 41 

 and 44, and the 1000-meter tow at station 64 were the only 

 records for Gaidius tenuispiniis in the eastern Pacific. It 



evidently seeks a level below 100 meters during the da\time 

 and is not abundant anywhere. The 4 Candacia species, 2 of 

 the Neocalanus species, 3 of the Oithona species, and the 

 single species of Pleuromamma were confined to the 100- 

 meter tow, and none of them were abundant. Thirty species 

 (66 per cent) appeared in one tow and not in the other, and 

 15 were common to both tows. Apparently the catch of the 

 SO-meter tow was lost; no specimens were axailablc. 



