STAT U0 
- (40 species) 
11° 57” S= 78° 37° W. Feds 6, 1929, 
Bottom depth 3357 m. 
Depth of tow,me. | ole" 5@ | kom ‘| Deptn of ‘tow, Me oO | 50 [200 | 
Temperature,c. [23.4)16.7/ 13.9) Density,. OtP.. 24.01 25.9) 266 | 
Salinity, 0/oo 35.2)35.1/35.0| Hydrogen ion pH 8.13) 7.90] 7.72 | 
Volume of tow, ems 60 <y a2 Length of tow, miles ot li. 56) Lee 
Acartia ‘danae | ‘Heterornabaus papililager| 
Calanus minor , Fe ae Labidocera detruncata 
propinguus Res |Macrosetella gracilis 
|Candacia simplex | | | oculata 
|Clausocalanus arcuicornis . | Mecynocera clausi 
| Clytemnestra rostrata |Microsetella rosea 
scutellata ;Olthona attenuata 
|Copilia denticulata plumifera 
lc 
ND RST He HEN EP ON aR Rann pistes 
dedi Sas 
Bays 
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2 oO 
quadrata similis 
orycaeus crassiusculis Oncaea media 
longistylis minuta. 
pacificus venusta 
pumilus 'Paracalanus parvus 
speciosus eS eK 'Plevromamma gracilis 
|Eucalanus attenuatus | Pseudocalanus: minutus 
crassus ‘Sapphirina angusta 
elongatus auronitens 
monachus: ) scarlata 
| Ewchaeta marina ! ae ee ‘gcolecitnri cellabrady: : 
lneaveceoacs ‘ewlea veel Pa ,Calocalanus plumulosus 3 
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REMARKS. The temperature was again high at the surface but fell nine and 
half degrees in the 100 meters ¥ the salinity remained nign at all three 
depths, the hydrogen ion diminished a littlee Twenty-one species were 
present at the surface, twenty-four in the 50-meter tow and thirty in the 
meter tow. Nineteen species (47%) were each confined to a single tow and 
fourteen species were found in all three towse- Three Eucalanus species,, 
Qithona similis and two Oncaea species were abundant or common in all three 
tows,.and the percentage of numerals in the records were considerably re— 
duced. Only a single specimen of Heterornabdus was captured and that was 
in the surface tow contrary to the usual distributione 

