The late Mr. Sizumu NOMURA was a great amateur entomologist who greatly contributed to the faunistic study on Coleoptera of Japan, Taiwan and their adjacent regions, namely Scarabaeoidea, Dryopoidea and Tenebrionoidea. After his death, his collection was placed in the National Science Museum, Tokyo, and it is preserved and curated there, now. The NSZ collection is containing thoutsands of Coleopteran specimens mainly from Japan and Taiwan including abdout 400 holotype specimens. These holotype specimens are outstandingly important for the systematic study on Asian Coleoptera.
　The entomological staff of NSMT rearranged the NSZ collection including holotypes which deposited to NSMT by Mr. Sizumu NOMURA while alive, and built a visual database for the purpose of systematic study on Asian Coleoptera. For the database, these invaluable type specimens are available for systematic study for Coleopterologist all over the world without any risk of damage.

＜Preserving condition of the NSZ collection＞

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２．Taxonomical Notes on the NSZ Collection

１）Note on the type designation

　This database includes holotypes and one representative of the syntypes in principle, but an allotype and a paratype are also contained. The asterisked types in the part of "TYPE DESIGNATION" as "Holotype*", "Holotype**", "Holotype***" and "Syntype**" each means the followings:
　Some holotype specimens preserved in the NSZ Coll. are not labelled "Holotype" , but red-labbeled "Type". There are some paratypes red-labelled "Paratype" in the same series. The types named "Type" therefore, should be the holotypes designated by the original description. Then, these types judged as the holotypes are shown "Holotype*" in this collection.
　Holotype specimens of some Melolontha species described by Nomura, 1952 are not designated by the original description. However, they are designated with the type labels maybe written by the author. These specimens should be recognized as the holotypes according to the article 73a of ICZN. Then, these holotypes are indicated as "Holotype**" in this database.　On some species shown as "Holotype***", the author has not designated the holotype in the original paper, but the holotype is determinable by monotypic designation.

２) Note on the type labels

　The holotypes each accompanied with collecting, type and the other kind of labels. The collecting labels are upper surface, type labells are below them, and blue paper might put previously to indicate booking for registration. The type label is a large red paper on which the species name is written by Mr. NOMURA (left picture shown below) or Dr. Yoshihiko KUROSAWA who was a curator of NSMT and received and deposited the holotype. These labels each recorded in a picture in our database, which are arranged from left upper side for upper layer on original pin to right below for under layer.

＜Type labels ：left, a type label (red) written by Mr. NOMURA；right, a type label (red) by Dr. KUROSAWA ＞

３）Note on the registration cards

　Registration cards of NSZ collection was made by Mr. Hirokazu KOBAYASHI when the collection moved to NSMT. The text data of this visual databese is based on the registration cards. The original cards are preserved in NSMT.