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b) Non- Sororal Polygyny-
It is just the opposite of the sororal polygyny. When a man marries several women at a
time who are not necessarily sister to each other it is known as non-sororal polygyny

2) Polyandry-
Polyandry is a form of union in which a woman has more than one husband at a time or
in which brother share a wife or wives in common.It is found in Khasi, Toda and Nayars.
Polyandry is divided into two types:
a) Fraternal Polyandry- When several brothers share a common wife is called as
fraternal polyandry. Draupadi‟smarrige to Pandavs.This type of marriages are found
among Todas and Khasi.

b) Non-Fraternal Polyandry-
It is just opposite of fraternal polyandry. In this type of marriage husbands of a woman is
not necessarily brother to each other. This type of Marriage is found among the Nayars of
Kerela. This happens mainly due to scarcity of women.

3) Cenogamy
Cenogamy- Cenogamy is known as group marriage. In this type of marriage a group of
men marry a group of women at a time. Ex- Some tribes of New Guinea and Africa.

 On the basis of rules of mate selection
1) Endogamy-It requires an individual to marry within a culturally defined group of
which he or she is already a member.
For ex- Caste, Tribal, Sub-caste, Varna etc.

2) Exogamy-The reverse of endogamy, requires the individual to marry outside of his/her
own group. Such as outside Gotra, pravara, sapinda or village.

a) Gotra Exogamy-Gotra refers to clan. Members of a particular gotra or clan supposed
to have close blood relation among themselves. Hence according to gotra exogamy one
has to marry outside one‟s own gotra.
b) Pravara Exogamy-Pravara means siblings. People originating from a common saint
are said to belong a particular Pravara. According to Pravara exogamy one has to marry
outside one‟s own pravara. Marriage within pravara is forbidden.

c) Sapinda Exogamy-Sapinda means lineage. People belonging to five generations from
father-side and three or seven generation from mother side are known as Sapindas. They
believed to belong a particular pinda. Hence accorrding to Sapinda exogamy marriage