Shining fungus beetle

you are right, I wasn't paying attention on antennae and sharp edged back

You might be able to ID it to species using this article: Ogawa, R.; Sakai, M. 2011: A review of the genus Cyparium Erichson (Coleoptera, Staphylinidae, Scaphidiinae) of Japan. Japanese journal of systematic entomology, 17(1): 129-136. If you get the article, can you pls email me a scan/PDF? Email: [email protected]

Both wrong! BTW, Cyparium thorpei is named after me! See: http://species.wikimedia.org/wiki/Cyparium_thorpei

check for Limnebius sp.

Clown beetle, Histeridae