— 159 — 
STATION 8&9 | 
| (49 species) 
S.. 152° Wr’ we. Maren 23,, 1929 
PAT na La Mii 
Bottom deptir eae Me. 
| Depth of tow,me o | 50 | peptn of tow,m 
/Temperature C.. 23.3 (28% 2.3 | Density, OtP.. 
Salinity, 0 /O® ee ee |Hydrogen ion pK 
| Wolume of tow, em? Bei 64 
j 
| 
: 
Length oF iad oman 
farranute rostrata 
‘Duvvockia squillimana 
,Macrosetella gracilis 
|Miicrocalanus pusillus 
i'Microsetella rose@ 
Neocalanus gracilis 
| robustior 
jOithona attenuata 
pilumifera 
similis 
Oitnonina. nana 
‘Oncaea curta 
media 
| Neartia danae 
Acrocalanus gracilis 
| monachus 
| Catenus minor 
| Calocalanus pavo 
'Candacia bispinosa 
| simplex 
| truncata 
/Centropages calaninus 
/Clausocalanus arcuicornis 
Clytemnestra scutellata 
Copilia denticulata 
quadrata 
vitrea minuta: 
| Carycaeus: crassiusculus: | | venusta 
dubiugs ee Paracalanus: parvus 
typicus ee es Pontellina plumata 
'Buchaeta acuta. |Sapphirina auronitens 
marina. | opalina 
| Euchirella: curticauda 'Scolecithrix danae 
| Farranula carinata | | ‘Spinocalanus magnus 
gibbula | i Undinula vulgaris 
Euchnirella: brevis | : Pachosina piona.neSDe. 
Labidocera detruncata ee ee Spinocalanus abyssalis 
GQithona spinirostris 
2 PA LE BNE HS APA BART APE GE tm & eno a 
(or WW 
QAnNFAHKHYY NO 
RHEMOFHHHONHHHNH 
© sh 
+ewonm WAAHM> 
Ww 
" - canny or pene ee ee Gane enorme ne A RC LE ER 
ow carter UE TE RI EEE EO LE EAE O LEN IT AN OT CIENT A I 
REWARKS.. The temperature was high and exactly the same at both depths,the 
salinity and hydrogen ion increased sligntly at the lower depthg~« Twenty— 
three species were found at the surface and forty-one in the 50-meter towe 
Thirty-four species (70%) were found in one tow and not in the otner, while 
fifteen species were common to voth towse 
Corycaeus, Farranula and Oncaea were more abundant at the surface, but 
three of the four Oithona species did not avpear at all in the surface towe 
The two EBuchaeta species were recorded as constituting 15% of the 50—meter 
tow 

