Collecting site
Kunsan (Kunzan, Gunzan, Gunsan), Republic of Korea
latitude: 35.983299     35°58'59.88"N
longitude: 126.716698     126°43'0.11"E
[Precision of location: Alexandria Digital Library (with NGA GNDB data)] 
[Site Named Here by name of site (or city, etc.)] 
Collected here:
| Notoplana koreana Kato, 1937 | Jul 1936 |  |  | collected by Mr. Siro Okuda of the Hokkaido Imperial University, in the coasts of Korea.  Single specimen. | 
| Pseudostylochus longipenis Kato, 1937 | Jul 1936 |  |  | collected by Mr. Siro Okuda of the Hokkaido Imperial University, in the coasts of Korea.  Single specimen at Gunzan on the western coast of Korea. | 
| Pseudostylochus elongatus Kato, 1937 | Jul 1936 |  |  | collected by Mr. Siro Okuda of the Hokkaido Imperial University, in the coasts of Korea.  Single specimen from Husan facing the Korean Straits. |