Abstract
In 1957 we visited a fishing village. WAKAGO buraku in NIIJIMA Island. Izu. An essential element of the vi]lage organization is the "generation-age grade system". Every male in the village can be addressed by a family relationship term by virtue of his position in the generatipnage grade system. Thus this system is classificatory. Another feature of the social structure is the marriage custom. Here matri-patrilocality is common. That is, both husband and wife stay with and work for the husband's family in the daytime and spend the evenings at the wife's parents' house. This type of residence continues until the husband's father goes into formal retirement. Upon succession to his father's positiorr in the family, the husband brings his wife and children to live in this household, as in the usual patrilocal residence pattern. This general pattern of matri-patrilocality is designated by Professor T. Omachi as the lzu-Toshima type. Our examination of the marriage customs in WAKAGQ village reveals that both lzu-Toshima pattern and the patrilocal residence pattern are followed.