Redescription of Bathymunida brevirostris (Yokoya

(Received for publication Oct. 24,1969) In 1933 YOKOYA described among the collection of the decapod Crustacea inhabiting the continental shelf around Japan made by "Soyo Maru " a new species of Mvnida, which species was transferred later into Bathymunida. The species account in the original description is very short, and since then no man can provide any sufficient information about it, for that species as well as that genus represents one of the rarest members. In 1969 an expedition to Tsushima Island, situated between Korea and Kyushu, was made under the joint auspices of Kyushu University and the National Science Museum, Tokyo. From the collection of the Crustacea three specimens of Bathymunida brevirostris were sorted out. In addition, a full set of "Soyo Maru " material of the Crustacea, which has been retained in the University of Tokyo, was recently replaced under the superintendence of the Zoo-logical Laboratory, Kyushu University. The material is in much poorer condition and it is here ascertained that the type specimen of this species is no longer present. For this reason the opportunity is taken to provide a detailed account and illustrations of the species. The specimens are preserved in the collection of the Zoological Laboratory, Kyushu University. I am greatly indebted to Professor Sadayoshi MIYAKE of Kyushu University for his invaluable advice and encouragement. I must be also thankful to Dr. Janet HAIG of the University of Southern California for her helpful suggestions. Bathymunida brevirostris (YOKOYA, 1933