LISTS OF SPECIES BY STATIONS 



103 



The temperature, salinit>', and h>drogen-ion concentration 

 were all high and changed ver^- little. Twelve species were 

 found at the surface and 31 in the 50-meter tow. Thirty-one 

 species (84 per cent) were present in one tow and not in the 



other, and 6 were found in both tows. Cnrycaeiis, Oithona, and 

 Oncaea were much more abundant in the deeper tow; Far- 

 ranula was divided between the two tows, but more abundant 

 at the surface, where it formed a large percentage of the total. 



Station 85 

 March 6, 1929; 17° 12' S, 136° 37' \V; bottom depth, 3791 m; 35 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, 0/00 

 Volume of tow, cm' 



Acartia danae . . c 



Acrocalanus gracilis 1 



monachus . . f 



Calanus minor . . f 



Candacia bispinosa . . a 



simplex • . a 



Copilia denticulata . . 1 



Corycaeus crassiusculus r c 



dubius 2 



speciosus . . c 



Eucalanus attenuatus . . f 



elongatus . . f 



Euchaeta marina . . a 



Euchirella curticauda . . 3 



Farranula carinata a a 



gibbula 2 



rostrata a r 



Megacalanus longicornis . . a 



Microcalanus pygmaeus. 



Microsetella rosea 



Neocalanus gracilis 



robustior 



Oithona attenuata 



similis 



spinirostris 



Oncaea minuta 



Paracalanus parvus 



Phaenna spinifera 



Pleuromamma gracilis. . 



Pontellina plumata 



Pseudocalanus minutus . 

 Sapphirina angusta 



pyrosomatis 



Scolecithrix danae 



Undinula darwinii 



The temperature, salinity, and hydrogen-ion concentration 

 were all high and unchanged at the two depths. Eight species 

 were present at the surface and 31 in the 50-meter tow. 

 Thirty-one species (90 per cent) were present in but one of 

 the tows and only 4 were present in both tows. Oithona and 



Oncaea were confined to the deeper tow, but Corycaeus and 

 Farranula were divided between the two tows. Candacia, 

 Eucalanus, and Neocalanus, with many others, were found 

 only at SO meters. The surface tow contained very few spec- 

 imens besides the 2 species of Farranula recorded as abundant. 



Between stations 85 and 86 

 March 8, 1929; 17° 48' S, 140° 49' W; 20 species 



Acartia danae c 



Acrocalanus gracilis 1 



Candacia norvegica 5 



simplex f 



Centropages calaninus f 



Corycaeus agilis r 



crassiusculus c 



Corycaeus longistylis 2 



robustus 2 



speciosus f 



Farranula carinata c 



gibbula 4 



rostrata c 



Microsetella rosea 1 



Oncaea minuta f 



similis 2 



venusta c 



Paracalanus parvus c 



Pseudocalanus minutus c 



Sapphirina auronitens 1 



Volume of tow, 32 cm'; length, 3 miles; surface only. In 

 this nocturnal tow between stations, 20 copepod species were 

 found, including many that were confined to the deeper tow 



at the regular station on either side. None of the species 

 was at all abundant, but 7 out of the 20 were recorded as 

 common. 



