326 
PACIFIC SCIENCE, Vol. V, October, 1951 
TABLE 1 
Surface Temperature and Chlorinity in Kaneohe Bay according to Station and Survey 
STATION 
TEMPERATURE (CENT.) 
CHLORINITY (P.P.M.) 
SURVEY 1 
SURVEY 2 
SURVEY 3 
SURVEY 4 
SURVEY 2 
SURVEY 3 
SURVEY 4 
1 
26.0 
23.5 
23.9 
25.1 
18.91 
19.19 
19.37 
2 
25.7 
23.5 
23.9 
25.3 
18.79 
19.22 
19.30 
3 
25.8 
23.5 
23.9 
25.2 
18.87 
19.22 
19.41 
4 
25.7 
23.5 
23.8 
25.1 
18.98 
19.32 
19.41 
5 
25.7 
23.5 
23.7 
25.2 
19.13 
19.38 
19.42 
6 
25.9 
23.5 
23.5 
25.2 
19.13 
19.32 
19.51 
7 
26.2 
23.5 
24.0 
25.6 
19.10 
19.38 
19.47 
8 
26.3 
23.6 
24.4 
26.0 
19.13 
19.32 
19.23 
9 
26.2 
23.6 
24.0 
25.3 
19.06 
19.35 
19.42 
10 
25.8 
23.0 
23.8 
25.0 
18.91 
19.14 
19.32 
11 
26.0 
22.7 
23.8 
24.9 
18.58 
18.95 
19.29 
12 
26.0 
23.0 
23.8 
24.3 
18.73 
18.93 
18.82 
13 
26.0 
22.9 
24.0 
24.8 
18.87 
18.97 
19.32 
14 
26.5 
23.2 
23.8 
25.0 
19.02 
19.14 
19.37 
15 
26.6 
23.3 
23.8 
25.2 
19.06 
19.34 
19.41 
16 
26.5 
23.2 
23.9 
25.0 
19.13 
19.32 
19.45 
17 
26.2 
23.2 
23.9 
25.0 
19.06 
19.21 
19.36 
18 
26.2 
23.1 
24.2 
24.6 
19.03 
19.23 
19.23 
19 
26.5 
23.0 
24.1 
24.8 
18.95 
19.26 
19.27 
20 
26.4 
23.2 
24.4 
24.8 
19.20 
19.30 
19.42 
21 
26.5 
23.1 
24.7 
24.9 
19.09 
19.21 
19.20 
22 
27.0 
23.1 
24.8 
24.8 
19.02 
18.99 
19.01 
23 
26.8 
23.0 
24.8 
24.8 
19.11 
19.36 
19.06 
Mean 
26.2 
23.2 
24.0 
25.0 
18.99 
19.22 
19.31 
Measurements of 20 eggs from the hauls 
gave an average length of 1.36 mm. and an 
average width of 0.61 mm. The yolk contains 
no oil globule. The shape and size of nehu 
eggs readily distinguish them from most 
other round or slightly oval fish eggs found j 
in the plankton. Absence of an oil globule j 
distinguishes them from others of about the | 
same size and shape which belong to an un- | 
known species and which were found on one ' 
occasion in a tow taken outside of the bay by 
Dr. A. H. Banner. 
All nehu eggs taken in the tows were at ! 
about the same stage of development. The | 
embryo extended approximately one-half to 
three-quarters of the distance around the j 
yolk; somites were visible in some specimens; , 
the head was taking shape around the lobes | 
of the brain; and the developing eyes were 
visible but not conspicuous. Less advanced 
"agglutinated,” disintegration of the yolk 
and embryo had occurred and the material 
filling the shell had a whitish color, as if de- 
composition had been under way for some 
time. 
IDENTIFICATION OF EGGS AND LARVAE 
Nehu eggs are oval in shape, bluntly ovoid 
at the ends, and about twice as long as wide. 
TABLE 2 
Temperature, Chlorinity, and Oxygen 
ACCORDING TO DePTH DURING SURVEYS \a AND \h 
SURVEY 
DEPTH 
TEMPERATURE 
CHLORINITY 
OXYGEN 
feet 
centigrade 
p.p.m. 
ml./ 1. 
\a 
2 
23.7 
19.29 
5.00 
10 
23.5 
19.40 
4.97 
20 
23.4 
19.33 
5.00 
lb 
5 
22.8 
19.38 
5.12 
20 
22.6 
19.48 
5.18 
32 
22.5 
19.57 
5.46 
