Rotatoria of Korea — Yamamoto 
153 
TABLE 1 
Ecological Data at Various Collection Stations in Korea 
STATION 
NUMBER 
REGION 
HOUR 
DATE 
AIR 
TEMP. 
WATER 
TEMP. 
pH 
PER CENT 
. CL 
°C. 
°C. 
l{ap) 
n 
14 
15 
VII 1940 
21.0 
19.5 
6.3 
6.1 
2a 
N 
10 
11 
VII 1940 
21.0 
6.8 
6 
M 
10 
22 
XI 1941 
11.2 
9.8 
lA 
7.3 
lb 
M 
14 
9 
XI 1941 
17.6 
12.7 
6.6 
6.7 
%a 
M 
13 
24 
XI 1941 
13.0 
11.4 
8.6 
8.2 
Qb 
M 
14 
24 
XI 1941 
11.9 
11.8 
7.8 
7.8 
0.08 
9a 
E 
14 
14 
XI 1941 
15.8 
12.0 
7.7 
7.3 
9b 
E 
14 
XI 1941 
7.9 
7.6 
9c 
E 
16 
14 
XI 1941 
12.4 
8.6 
8.6 
0.97 
10 
E 
9 
12 
XI 1941 
9.8 
9.2 
6.3 
6.3 
11 
E 
10 
12 
XI 1941 • 
15.0 
11.5 
6.5 
6.4 
12 
E 
15 
12 
XI 1941 
15.5 
15.8 
7.0 
7.2 
14 
E 
10 
27 
XI 1941 
9.8 
8.7 
6.8 
6.9 
15 
E 
9 
26 
XI 1941 
5.9 
9.2 
6.9 
7.0 
16 
W 
14 
17 
XI 1941 
18.5 
11.7 
7.7 
7.4 
0.02 
the garden of the Royal Palace in Keishu 
(Kyongju). 
15. A pond west of the Bukkokuji railway 
Station. 
Two kinds of collections were made, one 
from near the surface (15^) and the other 
from the bottom (15/;^). 
16. River Taidong-gang at Phongyang. 
The potamoplankton was collected on the 
river near Hangetsu-to (Halfmoon Island) in 
5 minutes’ upstream sailing. 
SPECIES FOUND IN PRESENT MATERIAL 
As the result of research on the materials 
from the stations mentioned above, 73 spe- 
cies (including 8 varieties and 7 forms) be- 
longing to 10 families and 26 genera have 
been identified. Besides these there were sev- 
eral species impossible to identify because of 
the strong contraction of the body. Seven 
species, which appeared in the previous rec- 
ords, could not be found in the present exam- 
ination. Thus, at present 83 species are known 
to occur in Korea. Although this is not a 
large number of species, it compares well with 
the number recorded from Japan. 
In the following list the distribution within 
Korea is indicated by region and station. The 
known distribution in other parts of the Far 
East is also given. Species marked with an 
asterisk are not present in the material studied. 
Order FLOSCULARIACEA 
Family CONOCHILIDAE 
1. Conochiloides dossuarius (Hudson) (M-8(^) 
Japan, Manchuria, Sumatra, Bali. 
2. Conochilus hippocrepis {Schmnk) (N-1^, lb, 
2h\ M-4) Japan, China, Manchuria. 
3. Conochilus imicornis Rousselet (M-7^, lb 
[Hada, 1936]) Japan, China, Manchuria. 
Order PLOIMA 
Family Notommatidae 
4. Monomfnata grandis Tessin (N-H) Japan, 
Manchuria, Sumatra. 
‘b.'^Notommata sp. (N-1^). 
6. Scandium eudactylotum Gosse (E-15^) Ja- 
pan, China, Manchuria. 
7. Diaschizza gtbba (Ehrenberg) (N-1^) Ja- 
pan, China, Sumatra, Java. 
Family Synchaetidae 
8. Synchaeta longipes Gosse (M-7^). 
9. Synchaeta oblonga Ehrenberg {N-2a; M-lb; 
E-9^, 9b, 9c, I5a) Japan. 
10. Synchaeta tremula (O. F: Muller) (N-7^; 
E-9c) Japan, China, Java. 
^Synchaeta spp. (N-2c; E-12, 14). 
