On a new species of Gyliotrachela from Celebes (Gyliotrachela concreta nov. spec.)

The Zoological Museum of Amsterdam recently received some interesting samples of minute landshells collected by Mrs. G. A. Tammes—Bolt in limestone hills in the southern peninsula of Celebes. Among a lot of shells from a hill along the main road from Makalé to Kalossi, at 700—800 m altitude, collected in September 1948, there were about a dozen specimens of a new species of Gyliotrachela (Gastropoda Pulmonata, Vertiginidae), a genus hitherto unknown in Celebes.