LISTS OF SPECIES BY STATIONS 



37 



Station 30 

 September 15, 1928; 12° 54' N, 56° 15' W; bottom depth, 4703 m; 48 species 



Depth of tow, m 

 Temperature, °C 

 Sahnity, o/oo 



Calanus helgolandicus. . 



minor 



propinquus 



Calocalanus pave 



styliremis 



Candacia bi.spinosa 



pachydactyla 



simplex 



Centropages furcatus. . . 

 Clytemnestra scutellata. 

 Corycaeus agihs 



crassiusculus 



dubius 



lautus 



limbatus 



pumilus 



speciosus 



Eiichacta marina 



Farranula carinata 



gibbula 



rostrata 



Haloptiius ornatus 



Luciciitia clausii 



flavicornis 



Macrosetella gracilis. . . . 



oculata 



Mecynocera clausi 



Microcalanus pusillus. . . 

 Microsetella norvegica. . 



rosea 



Oithona hebes 



plumifera 



similis 



spinirostris 



Oncaea curta 



media 



minuta 



notopa 



subtilis 



tcnella 



venusta 



Paracalanus parvus 



Phaenna spinifera 



Pontellopsis perspicax. . 

 Pseudocalanus minutus. 

 Rhincalanus cornutus. . . 



Scolecithrix danae 



Undinula vulgaris 



The temperature at all three depths was high and showed 

 only 4° variation; the salinity and hydrogen-ion concentration 

 were also high and \aried extremely little. Twenty-two species 

 were taken at the surface, 21 at 50 meters, and 28 at 100 

 meters. Thirty-two species (66 per cent) were each confined 

 to a single depth and 7 were found at all three depths. The 



100-meter tow contained the only record for Oithona hebes 

 and the surface tow one of two Atlantic records for Oncaea 

 subtilis. Corycaeus, Farranula, and Oncaea all appeared in 

 goodly numbers at the surface, but no one of the four Oithona 

 species was found there, two of them being confined to the 

 50-meter tow and the other tw-o to the 100-meter tow. 



