STATION & 
(36 species) 
Zuo 35° gu. 91° 52° W. Dec.. 30,, 1928 
Botton. depth 3610 m. 
a PIPY PEs: 72. we - MOR Yn —s 
I a Nah BH ELPA SR SGP CON TR elt SN ln RA ies imho Semone enna sommes pinieaiitiiaeiaaetin ees = Oe an 
LAA SON A ORO wn eel pets WG ABN An) Bia Bs om 2 A ate ae 
: ania 
Depth of tow,me. 0 50 “100 Depth of tow, m. 
Temperature ,Ce. 19.2} 16.2} 13.1) Density, OtP. 
Salinity, 0/oo: BY. 2:1 34.2) 34.1 |/Hydrogen ion pHi 
Volume of tow, cm? 36 36 Length of tow, miles 
NR I ARLEN CST SO RUE ORE ETE EAT RR RENEE a Mere 
| 
: jen 
Acartia danae | 
| 
| 
sient denen athe alarhinenneeaaaaciainntiataeben enon one rc ee 
‘Oithona. vrevicornis 
plumifera 
| similis 
| G2 thonina nana 
becca media 
mediterranea 
minuta 
notopa. 
Similis 
venusta. 
 Paracalanus parvus 
pygmaeus 
Pseudocalanus minutus 
Mecynocera clausi Sapphirina angusta 
Microcalanus pygmaeus | | Scolecithnrix danae: 
Miracia efferata __. | | Spinocalanus abyssalis 
Neocalanus gracilis | | Calocalanus plumulosus 
negligens 
Acrocalanus gracilis 
Clausocalanus arcuicornis 
furcatus 
Clytemnestra scutellata 
Corycaeus agilis 
catus 
crassiusculus 
lautus 
typicus 
Farranula .curta 
rostrata 
1 
f 
bh © 
TREN Re NEA INE IE A Se NERS AN I NE GT ONTO RD Nite preteens 
A AEE NS TL TEE NO TE EES REY STEED NN 
WARP rPRPWN EN OOH S| Fe 
QO nMNr 
© 
FE WA EIR A Nhl Re ec erg 9 AI ARI I SE! et rt se 
| PPHDHPHMHOANRO 
‘tenuicornis _ | Be | Undinula darwin 
AVF Re RF! SATA AO Be YE SAIC et SOONG S hehe ties Rr te Se AA NEN CL HET ee CAN PR NRED IIMS D199 SOP BATTER R, MAST ray, Par scereinres — 
: Was Fell 
REMARKS.. The temperature #8 moderate at the surface and Geese six degrees in 
100 meters y the salinity and hydrogen ion eae fairly high and about constants 
Only six species were found at’ the surface,. thirty-one in the 50-meter tow, 
and twenty-six in the 100-meter towe Fourteen species (40%) were each 
confined. to a single tow and five were present in all three towse Tne 
volume and length of the three tows were exactly the same although the cope- 
pod svecies were so unequally distributed--e Compare the fact that the genera 
Corycaeus, Farranula and Oncaea are here practically confined to the 50-and 
LOO-meter tows with their abundant surface distribution in the two night tows 
which follow-# Note also the lack of Aetideus, Megacalanus and Undeuchaeta 
in all three of these station tows and their presence at the surface in the 
nignt tows 

