LISTS OF SPECIES BY STATIONS 



123 



Station 106 

 May 17, 1929; 16° 14' N, 151° 04' E; bottom depth, 5925 m; 68 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o 00 

 Volume of tow, cm' 



50 100 Depth of tow, m 50 100 



27.2 26.0 25.5 Density (o-tp) 22.6 22.9 23.7 



34.9 34.9 35.0 Hydrogen-ion cone. (pH) 8.23 8.23 8.23 



64 64 48 Length of tow, miles 0.5 0.5 0.5 



Acartia danae 



Acrocalanus gibber 



gracilis 



longicornis 



monachus 



Calanus minor 



Calocalanus pavo 



plumosus 



styliremis 



Candacia bispinosa 



longimana 



simplex 



truncata 



varicans 



Canthocalanus pauper. . . . 

 Centropages calaninus . . . . 

 Clausocalanus arcuicornis . 

 Clytemnestra scutellata. . . 



Copilia denticulata 



Corycaeus clausi 



crassiusculus 



dubius 



ovalis 



pacificus 



speciosus 



Eucalanus attenuatus 



elongatus 



Euchaeta acuta 



marina 



Farranula carinata 



gibbula 



gracilis 



rostrata 



Haloptilus longicornis. . . . 



Haloptilus plumosus 



spiniceps 



Hcterorhabdus papilliger. . . . 



Labidocera detruncata 



Lubbockia squillimana 



Lucicutia clausii 



Mecynocera clausi 



Megacalanus longicornis. . . . 

 Microcalanus pusillus 



pygmaeus 



Microsetella rosea 



Miracia eflerata 



Ncocalanus gracilis 



robustior 



Nesippus sp 



Oithona attenuata 



plumifera 



similis 



spinirostris 



Oncaea minuta 



venusta 



Onchocalanus nudipes, n. sp. 

 Paracalanus aculeatus 



parvus 



Phaenna spinifera 



Pontella tenuiremis 



Pontellina plumata 



Pseudocalanus minutus 



Sapphirina auronitens 



metallina 



nigromaculata 



opalina 



Scolecithrix danae 



Undinula darwinii 



Icf 



The temperature decreased nearly 2° in the 100 meters, the 

 salinity and hydrogen-ion concentration remaining practically 

 the same. Thirt\' species were found at the surface, 35 in 

 the 50-meter tow, and 45 in the 100-meter tow. Thirty-six 

 species (53 per cent) were each confined to a single depth and 



the three tows was exactly the same, the \olume of each of 

 the two upper tows was 33 per cent greater than that of the 

 100-meter tow. Corycaeus, Farranula, and Oiicaea were dis- 

 tributed at all three depths, together with Eucalanus, Eu- 

 chaeta, and Sapphirina. None of the 4 species of Oithona or 



10 were present at ail three depths. Although the length of the 5 species of Candacia appeared at the surface. 



