152 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Station 143 

 October 9, 1929; 34° 06' N, 157° 09' W; bottom depth, 5841 m; 33 species 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 

 \'olunie of tow, cm' 



Depth of tow, m 

 Density (<rtp) 

 Hydrogen-ion cone. (pH) 

 Length of tow, miles 



Acartia danae 



longiremis 



Acrocalanus gracilis 



Calanus minor 



Candacia aethiopica 



Canthocalanus pauper. . . . 

 Centropages calaninus. . . . 

 Clausocalanus arcuicornis. 



furcatus 



Clytemnestra rostrata. . . . 



Copilia quadrata 



Corycaeus crassiusculus. . . 



longistylis 



pacificus 



pumilus 



typicus 



Eucalanus attenuatus 



Eucalanus elongatus 



Labidocera acutifrons 1 



detruncata a 



Mecynocera clausi c 



IVIegacalanus longicornis 



Microsetella rosea 



Neocalanus gracilis 2 



robustior 



tcnuicornis 



Oithona similis f 



Oithonina nana f 



Oncaea venusta 



Paracalanus parvus 



Pseudocalanus minutus f 



Undinula darwinii 



vulgaris 



The temperature was a little lower at the surface than at 

 station 142 and fell 8?5 in the 100 meters; the salinity and 

 hydrogen-ion concentration diminished a trifle. Thirteen 

 species were taken at the surface, 15 in the 50-meter tow, 

 and 23 in the 100-meter tow. Twenty species (60 per cent) 

 were each confined to a single tow and 5 were present in all 



three tows. The lengths of the three tows varied from 10 

 to 30 per cent, but the volumes were exactly the same. 

 Corycaeus and Oithona were sparsely distributed in all three 

 tows, but more abundantly in the 100-meter tow. Farranida 

 was absent, and Oncaea appeared only in the deepest tow. 

 Males of Labidocera detruncata were abundant at the surface. 



Station 144 

 October 11, 1929; 33° 38' N, 151° 47' W; bottom depth, 5523 m; 12 species 



Acartia danae f 



Candacia aethiopica r 



Corycaeus speciosus f 



Farranula carinata f 



Labidocera acutifrons c 



detruncata a 



nerii c 



Mecvnocera clausi r 



Microsetella rosea f 



Oithona similis r 



Pontella tenuircniis C 



Pontellopsis villosa r 



Temperature, 23?2 C; salinity, 34.9 o/oo; density, 23.8; 

 hj'drogen-ion concentration, 8.37; volume of tow, 64 cm^; 

 length, 2 miles. Only the surface tow was saved; it was note- 



wortln- for tlie exceptional aiaundance of Labidocera detrun- 

 cata, including a great many development stages, and for 

 the only Pontellopsis villosa of the entire cruise. 



