58 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 48 

 November 25, 1928; 19° 06' S, 114° 07' W; bottom depth, 2874 m; 54 species 



Depth of tow, m 

 Temperature, °C 

 SaUnity, o/oo 

 Volume of tow, cm' 



Acartia negligens 



Acrocalanus gracilis 



.Calanus minor 



Candacia bispinosa 



simplex 



truncata 



Centropages calaninus. . . . 

 Clausocalanus arcuicornis. 



furcatus 



Copilia denticulata 



Corycaeus agilis 



andrewsi 



catus 



crassiusculus 



flaccus 



lautus 



limbatus 



typicus 



Euchaeta marina 



Farranula carinata 



concinna 



curta 



gibbula 



gracilis 



rostrata 



Haloptilus longicornis. . . . 

 Heterorhabdus papilliger. 



Labidocera detruncata 



Lucicutia clausii 



flavicornis 



Macrosetella oculata 



Mecynocera clausi 



Microcalanus pygmaeus 



Neocalanus gracilis 



Oithona attenuata 



similis 



spinirostris 



Oithonina nana 



Oncaea curta 



media 



minuta 



notopa 



similis 



tenella 



Onchocalanus nudipes, n. sp. 



Paracalanus parvus 



Pleuromamma gracilis 



Pontella tenuiremis 



Pontellina plumata 



Pontellopsis regalis 



Pseudocalanus minutus 



Spinocalanus abyssalis 



caudatus 



Undinula darwinii 



The temperature, salinity, and hydrogen-ion concentration 

 were high and near!)' the same at all three depths. The surface 

 tow contained 11 species, the 50-meter tow 23, and the 100- 

 meter tow 46. Thirty-three species (60 per cent) were con- 

 fined to a single tow and only 5 w-ere found in all three tows. 

 The abundance of species in the 100-meter net coupled with 



the paucity of those in the other tows suggests considerable 

 intensity of light previous to the taking of the tows. The 8 

 species of Corycaeus and the 6 species of Oncaea were almost 

 entirely in the 100-nieter tow, but the 6 species of Farranula 

 and the 3 of Oithona were well distributed in all three of the 

 tows. 



