LISTS OF SPECIES BY STATIONS 



147 



Station 138 

 September 20, 1929; 22° 53' N, 151° 15' W; bottom depth, 5382 m; 57 species 



Depth of tow, ni 

 Temperature, °C 

 Sahnity, 0/00 

 Volume of tow, cm' 



Acartia danae r c 



Acrocalanus gibber 2 



gracilis c c 



longicornis r f 



Aetideus armatus 



Calanus minor . . f 



Calocalanus pavo c f 



styliremis . . 2 



Candacia bispinosa . . f 



pachydactyla . . 2 



simplex . . f 



Canthocalanus pauper . . 3 



Clausocalanus arcuicornis c c 



furcatus 2 r 



Clytemnestra rostrata . . 1 



scutellata 



Copilia denticulata r f 



Corycaeus agilis r 



crassiusculus . . f 



lautus 



longistylis f f 



pacificus . . 2 



speciosus c a 



typicus f 



Eucalanus elongatus . . 1 



Euchaeta acuta . . f 



marina . . c 



Euchirella curticauda . . 2 



Farranula carinata a f 



Farranula rostrata 



Haloptilus longicornis. . . , 



spiniceps 



Labidocera detruncata. . 

 Lucicutia clausii 



flavicornis 



Macrosetella gracilis 



oculata 



Mecynocera clausi 



Megacalanus longicornis. 



princeps 



Microsetella rosea 



Miracia efTerata 



Neocalanus gracilis 



robustior 



Oithona plumifera 



similis 



spinirostris 



Oithonina nana 



Oncaea minuta 



venusta 



Paracalanus parvus 



Pleuromamma robusta. . . 

 Pontella securifer 



tenuiremis 



Pseudocalanus minutus. . 



Scolecithrix danae 



Undinula darwinii 



a 

 c 



c 

 f 

 c 

 c 

 a 

 c 

 19 



The temperature was high at the surface and fell 4° in 

 the 100 meters; the salinity and hydrogen-ion concentration 

 changed but little. Twenty-four species were taken at the 

 surface, 43 in the 50-meter tow, and 34 in the 100-meter tow. 



Twenty-six species (46 per cent) were each present in a 

 single tow and 12 in all three tows. Corycaeus, Farranula, 

 Oithona, and Oncaea appeared at all depths and the rare spe- 

 cies Pleuromamma robusta, a single female, at 100 meters. 



