76 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Between stations 62 and 63 



A. December 31, 1928; 32° 23' S, 89° 42' \V 



B. December 31, 1928; 32° 25' S, 89° 49' W 



50 species 



Location of tow 



A 



B 



Location of tow 



Acartia danae 



negligens 



Acrocalanus gibber 



gracilis 



Calocalanus plumulosus, . . 

 Candacia bispinosa 



norvegica 



simplex 



Clausocalanus arcuicornis. 



furcatus 



Clytemnestra scutellata. . . 

 Corycaeus agilis 



catus 



crassiusculus 



lautus 



pumilus 



typicus 



Euaetideus bradyi 



Farranula carinata 



concinna 



curta 



gibbula 



gracilis 



rostrata 



Lucicutia flavicornis 



Mecynocera clausi 



Megacalanus longicornis. 

 Microcalanus pusillus. . . . 

 Neocalanus gracilis 



robustior 



tenuicornis 



Oncaea curta 



media 



mediterranea 



minuta 



notopa 



similis 



tenella 



venusta 



Faracalanus parvus 



pygmaeus 



Pleuromamma gracilis . . 



Pontcllina plumata 



Pseudocalanus rniiuitus. 



Scolccithrix danae 



Undcuchaeta major. ... 



plumosa 



Undinula caroli 



darwinii 



Vettoria granulosa 



These two surface tows were made on the same night 5 or 6 

 miles apart. Together they yielded 50 species, of which 43 

 were found in one tow and 25 in the other. Thirty-two species 

 (64 per cent) were taken in one tow only, and 18 (36 per cent) 

 were present in both tows. Here again is a striking diversity 

 in the surface distribution of the copepods within a compara- 

 tively short distance. Since these tows were nocturnal and 

 some of the species at least had come to the surface from be- 



low, apparently the diverse distribution was not confined to 

 surface species alone. The three small genera Corycaeus, 

 Farranula, and Oncaea were especially well represented, and 

 in tow A they constituted more than 90 per cent of the cope- 

 pod plankton. Euaetideus, Megacalanus, and the two Un- 

 dcuchaeta species were almost certainly migrants from below. 

 The times of the tow-s were not recorded, but it is very prob- 

 able that tow A was taken nearer midnight than the other. 



