i TD 
STATION 75 
(56 species) 
14° 15% 8. 92° 05% W. Feb. 14,.1929 
Bottom had Eide Me 
Depth of tow,me. 0 50 100: Depth « of  towcths 50 |100 
Temperature,¢. 2247/|20. a (17.8%/Density,, &tP.. / 24.6) 25.4) 26.1) 
Salinity,,. 0/00 55s : 35.5 '35.4|Hydrogen ion pH /B.1S) S14) &. 06) 
Volume of tow, ome 3 43) Length of tow,, miles | Oc ME: Lett see 
. natin RE RE EA a ne — a 
poarbie hana 
Calanus minor 
propinguus 
Caloealanus pavo 
styliremis 
pence ca bipinnata 
| - Simplex 
|Clytemnestra rostrata 
| scutellata 
\Mecynocera clausi 
\Microsetella norvegica 
| rosea 
‘Neocalanus gracilis 
Oithona attenuata 
plumifera 
similis 
Spinirostris 
| ‘Oncaea media 
| Corycaeus crassiusculus minuta 
| longistylis venusta 
7 
_—. 2 eye ern puneteetenenions : " 
“ a — TA — 
NyNaryr eT A 
i 
| 
j 
HHHeE © HOMERS | re 
pacificus | | | Paracalanus parvus 
pumilus Ges 59) | pygmaeus 
| ® Pleuromamma gracilis 
Pontella securifer 
lobiancol 
Pseudocalanus minutus 
Rnincalanus cornutus 
‘Sapphirina auronitens 
nigromaculata 
opalina 
Temora discaudata 
Calacalanus plumulosus 
Undinula vulgaris 
Phaenna spinifera 
~ NM © © 
_Eucalanus attenuatus 
| crassus 
| elongatus 
| monachus 
 Eucnaeta marina 
Farranula carinata 
rostrata 
Haloptilus longicornis 
ornatus 
plumosus 
Heterornabdus paplilager 
Lubbockia S8quillimana 
Tucicutia clausi Pachosina piona 
fiavicornis | | Neocalanus tenuicornis 
 Euchirella brevis 7 | | Undinula darwini 
Ae I ar anhi eA pay ma me! NEO RNR NE PIU NS TER AS NE REN CS ET ST EOIN EN Ie FH 
ih @ +4 
marten 
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wn S&S FH FH 
\N 
en le CREE ym 0-al e oT ™eennene 
REMARKS .«. Again the temperature, salinity and hydrogen ion were high at the 
surface, the temperature decreased five degrees and the otner two diminished 
only slightly in the 100 meters.. Twelve: species were found at the surface, 
thirty-three in the 50 meter tow and thirty-eignt in the 100 meter towe 
Thirty-one species (55%) were each confined to a single tow and only three 
species were present inall three towse Five specimens of the new genus 
Pachosina were here taken at the surface and none in tne deeper tows. 
The four species of Eucalanus were again found in both the deeper tows but 
none at the surface. Corycaevs and Oncaea are distributed in all three 
tows with the latter genus decidedly more abundant in the two deeper tows—- 

