124 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 107 

 May 19, 1929; 14° 05' N, 146° 06' E; bottom depth, 4920 m; 61 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 

 \'okime of tow, cm' 



Acartia danae 



Acrocalanus gibber 



gracilis 



longicornis 



monachus 



Calanus minor 



Calocalaniis pavo 



plumulosus 



Candacia bispinosa 



simplex 



truncata 



varicans 



Canthocalanus pauper. . . . 

 Centropages calaninus. . . . 

 Clausocalanus arcuicornis. 

 Clytemnestra scutellata. . . 

 Copilia denticulata 



quadrata 



vitrea 



Corycaeus agilis 



crassiusculus 



flaccus 



lautus 



longistylis 



pacificus 



speciosus 



Euchaeta acuta 



marina 



Euchirella brevis 



Farranula carinata 



gibbula 



Farranula gracilis 



rostrata 



Haloptilus plumosus 



spiniceps 



Heterorhabdus papilliger. 

 Lubbockia squillimana. . . 

 Lucicutia clausii 



flavicornis 



Mecynocera clausi 



Microcalanus pusillus. . . . 



pygmaeus 



Microsetella rosea 



Neocalanus gracilis 



robustior 



Oithona attenuata 



similis 



spinirostris 



Oncaea curta 



media 



minuta 



notopa 



venusta 



Paracalanus parvus 



Pontcllina plumata 



Pseudocalanus minutus. . 

 Sapphirina auronitens. . . 



nigromaculata 



Scaphocalanus elongatus. 



Scolecithrix danae 



Undinula darwinii 



f 

 2 

 c 

 c 

 2 

 f 



2 



19 

 f 

 c 



The temperature fell 3° in 100 meters, the salinity and 

 hydrogen-ion concentration remaining constant. There were 

 15 species at the surface, 37 in the 50-meter tow, and 44 in 

 the 100-meter tow. Thirty-four species (56 per cent) were 

 each confined to a single depth and 8 were present at all three 

 depths. Although the surface tow was more than twice the 

 length of either of the other tows, its yolume was exactly the 



same. Corycaeus, Euchaeta, Farranula, and Oncaea were dis- 

 tributed in all three tows, but Candacia, Oithona, and Sap- 

 phirina appeared only in the two deeper tows. Here again 

 the paucity of species at the surface compared with those at 

 the other two depths indicates strong light before the tows 

 were taken. The surface tow contained a \er>- large number 

 of 2 of the Farranula species. 



