LISTS OF SPECIES BY STATIONS 



91 



Station 71 

 February 6, 1929; 11° 57' S, 78° 37' W; bottom depth, 3357 m; 40 species 



Depth of tow, m 

 Temperature, °C 

 Sahnity, 0/00 

 X'olume of tow, cm' 



Acartia danae 



Calanus minor 



propinquus 



Calocalanus plumulosus. . . 



Candacia simplex 



Clausocalanus arcuicornis. 

 Clytemnestra rostrata . . . . 



scutellata 



Copilia denticulata 



quadrata 



Corycaeus crassiusculus. . . 



longistylis 



pacificus 



pumilus 



speciosus 



Eucalanus attenuatus 



crassus 



elongatus 



monachus 



Euchaeta marina 



Haloptilus spiniceps 



Heterorhabdus papilliger. 

 Labidocera detruncata. . . 

 Macrosetella graclHs 



oculata 



Mecynocera clausi 



Microsetella rosea 



Oithona attenuata 



plumifera 



similis 



Oncaea media 



minuta 



venusta 



Paracalanus parvus 



Pleuromamma gracilis. . . 

 Pseudocalanus minutus. . 

 Sapphirina angusta 



auronitens 



scarlata 



Scolecithricella bradyi. . . 



The temperature was again high at the surface but fell 

 9?5 in the 100 meters; the salinity remained high at all three 

 depths, and the hydrogen-ion concentration diminished a 

 little. Twenty-one species were present at the surface, 24 in 

 the 50-meter tow, and 30 in the 100-meter tow. Nineteen 

 species (47 per cent) were each confined to a single tow and 14 



were found in all three tows. Three Eucalanus species, Oithona 

 similis, and 2 Oncaea species were abundant or common in 

 all three tows, and the percentage of numerals in the records 

 was considerably reduced. Only a single specimen of Heter- 

 orhabdus was captured, and that was in the surface tow, 

 contrary to the usual distribution. 



