LISTS OF SPECIES BY STATIONS 



Station 39 

 November 6, 19iS; if 52' X, 81° 14' W; iM.u.mi depth, 3200 m; 85 species 



49 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 

 \'olunie of tow, cm' 



Acartia negligens 



Acrocalanus gibber 



gracilis 



monachus 



Aegisthus spinulosus 



Aetideiis armatus 



Amallothri.x obtusifrons. . . 



Calanus minor 



Calocalanus pavo 



Candacia bispinosa 



ciirta 



pachydactyla 



simplex 



truncata 



Canthocalanus pauper. . . . 



Centropages furcatus 



Clausocalanus arcuicornis. 



furcatus 



Clyteninestra rostrata . . . . 



scutellata 



Corycaeus agilis 



andrewsi 



crassiusculus 



lautus 



limbatus 



speciosus 



Euaetideus bradyi 



giesbrechti 



Eucalanus attenuatus 



crassus 



elongatus 



monachus 



mucronatus 



Euchaeta acuta 



marina 



Euchirella breyis 



rostrata 



Farranula carinata 



curta 



gibbula 



gracilis 



Haloptilus longicornis. ... 



ornatus 



lleterorliabdus papilliger 



spinifrons 



Lucicutia clausii 



flavicornis 



longicornis 



Macrosetella gracilis 



Microcalanus pusillus f 



pygmaeus f 



Microsetella rosea 2 



Miracia etferata 4 



Neocalanus gracilis 2 



robustior 



Oithona attenuata 



plumifera 



siniilis 



spinirostris 



Oncaea conifera 



curta 



media c 



minuta a 



similis 



subtilis 



venusta a 



Pachyptilus abbreyiatus, juv 



Paracalanus paryus c 



pygmaeus 4 



Phaenna spinifera 



Pseudocalanus minutus 



Rhincalanus cornutus 



nasutus 



Sapphirina auronitens 3 



nigromaculata 1 



Scolecithricella abyssalis 



bradyi 



marginata 



minor, juv 1 cT 



Scolecithri.x danae '. 



Temora discaudata c 



stylifera 1 



Undinula darwinii f 



vulgaris 3 



X'ettoria granulosa 



There was a drop in temperature of 43 per cent between the 

 surface and the 100-meter level, a rise of 2 points in salinity, 

 and a slight diminution in hydrogen-ion concentration. The 

 frequent numerals in the abundance records still indicate a 

 very small number of specimens for many of the species. 

 Candacia, Corycaeus. Eucalanus, and Oncaea were each repre- 

 sented by 5 to 7 species, although the number of individuals 

 in all except Oncaea was \ery small. The SO-meter tow con- 



tained the only record for Pachyptilus abbreviatus, a young 

 male not fully developed. Forty-five species (53 per cent) were 

 each confined to a single depth and 14 were taken at all three 

 depths. More specimens of Lucicutia longicornis were captured 

 here in the 100-meter tow than at any other locality. The 

 1 Aetideus, 2 Euaetideus, and 2 Rliincalanus species were 

 found only in the deepest tow, and the 5 Candacia species 

 were confined to the two deeper tows. 



