Table . Seasonal variation in observed sex-ratios in different age-groups of Hawaiian Monk Seals on Lisianski 
ADULTS 
Season 
No. of 
dtr * 
io of 
No. of 
?? 
of 
?9 
Spring (Mar.) 
4/188 
52.8 
4/168 
47-2 
Summer (June) 
2/74 
50.7 
2/72 
49.3 
Autumn (Sept.-Oct.) 
4/189 
67-3 
4/92 
32.7 
Winter (Feb.) 
1/8 
66.7 
1/4 
33-3 
* 
The figure to the left of the virgule is the number 
SUB-ADULTS/YEARLINGS PUPS 
No. of 
dtr 
f of 
dtf 
No. of 
?? 
IToF 
?? 
No. of 
'i of 
cfcT 
No. of 
99 
Ch 
0 0 + 
CH- 
4/69 
53-1 
1 
1 
46.9 
3/19 
50.0 
3/19 
50.0 
2/22 
53-7 
2/19 
46.3 
3/25 
38.5 
3/40 
61.5 
V36 
45.6 
4/43 
54.4 
2/13 
54.2 
2/11 
45-8 
1/16 
80.0 
1/4 
20.0 
1/0 
100.0 
1/0 
0.0 
)f counts 
made 
in each 
season 
in which 
sex ratios were 
re- 
corded for the age class; the one to the right is the total number observed in each season. 
