Models of ethnicity in Nepal stress, on the one hand, unlimited ethnic diversity and, on the other, a rather limited set of ethnic contrasts: Hindu versus Buddhist, tribe versus caste, mountain versus middle hills versus lowland Terai. However, ethnic relations in Humla District, in Nepal's far northwest Karnali Zone, are characterized more by interaction, interdependence, and mobility than contrasts and boundaries between groups.1 In Humla, individuals and even entire villages readily change their ethnic affiliation and their position in the caste system. There, too, ethnic groups are linked by a regional economic and social system, and changes in a group's ethnic affiliations are coincident with changes in their economy and style of life. Finally, the case of Humla reaffirms what other scholars have noted: ethnic relations today are the outcome of a historical process of accommodation between regional ethnic systems and the policies of a centralizing state.

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This review examines the implications of new kinship practices for anthropological theory, with a special focus on recent research in gay and lesbian kinship and assisted reproduction. The article begins with an account of the theoretical contexts in which kinship studies have been conducted and a brief survey of some of the older literature on alternative systems of marriage and family formation in preindustrial and modern societies. The emphasis then turns to current discussions of how gay men and lesbian women are creating meaningful networks of kin and families and the ways in which these practices both follow and challenge traditional expectations for family life. The final section surveys the ways in which the new reproductive technologies have been utilized in Euro-American societies and how cultural ideas and values concerning kin relationships have shaped the transfer of these technologies to and their utilization in other societies.

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Polyandry has long been viewed as an anomalous form of marriage that raises fundamental questions about variability in human kinship systems. This paper integrates and evaluates a set of hypotheses derived from sociocultural anthropological and evolutionary biological theories of polyandry against data collected on the Nyinba, a well-studied ethnically Tibetan population living in northwestern Nepal. In this population, polyandry is fraternal; it is the normative form of marriage and highly valued culturally. Nonetheless, certain polyandrous marriages fail-men occasionally leave their natal households and abandon their joint marriages. In exploring the reasons for these marital breakdowns and the characteristics of men who instigate them, this paper offers a new perspective on the presumed contradictions of polyandry and a more fruitful approach to understanding how polyandrous practice comes to be perpetuated from one generation to the next. It also contributes to discussions about how sociocultural and evolutionary perspectives may provide complementary viewpoints for ethnographic data analysis.