Life cycle, Y.N. Tobari and D. Moriwaki; morphology, D. Moriwaki and Y.N. Tobari; geographical distribution, Y.N. Tobari; chromosomes, Y.N. Tobari et al; linkage maps, Y.N. Tobari; crossing-over in males, M. Matsuda et al; mutator systems, M. Matsuda; optic morphology (Om) mutations - genetic studies of Om mutations and their modifiers, S. Tanda et al; the tom retrotransposon, S. Tanda et al; molecular analysis of Om mutations, S. Tanda et al; histological analysis of Om mutations, S.H. Hori; population genetics - polytene chromosome variations of drosophila ananassae and its relatives, Y. Tomimura et al; heterosis and frequency dependent selection, Y.N. Tobari; isozyme polymorphisms, M.L. Cariou and J.L. Da Lage; organization and structure of the amylase gene family, J.L. Da Lage and M.L. Cariou; nucleotide sequence variation on the X chromosome, W. Stephan and C.H. Langley; sexual behavior, Y. Oguma; catalog of mutants, D. Moriwaki and Y.N. Tobari.