There are two systems of kinship nomenclature current among Fijians, one indicating consanguinity, and the other kinship in relation to marriage. This latter system radiates from the central idea of Concubitancy, and it is this system that is now to be discussed. The word "Concubitant" is adopted because, besides being a fair translation of the Fijian word _vei-ndavolani_ (_vei_ = reciprocal affix, _ndavo_ = to lie down), it expresses the Fijian idea that persons so related ought to cohabit. In order to understand the system it is necessary to free the mind from the ideas associated with the English terms of relationship, and to adopt the native terms, which are as follows:-- (1) _Tama_--Father, or paternal uncle. _Tina_--Mother, or maternal aunt. _Tuaka_--Elder brother, sister, or cousin (not concubitant). _Tathi_--Younger brother, sister, or cousin-german (not concubitant). _Luve_--Child. _Tuka_--Grandfather. _Mbu_--Grandmother. _Makumbu_--Grandchild. _Tumbu_--Great-grandparent. (2) _Ngane_(reciprocal form, _vei-nganeni_)--The relationship of a male and female of the same generation between whom marriage is forbidden, _i.e._ brother and sister, both real and artificial. _Ndavola_ (reciprocal form, _vei-ndavolani_)--The relationship of males and females of the same generation between whom marriage is right, and even obligatory--consequently sister-in-law. _Tavale_ (reciprocal form, _vei-tavaleni_)--Male cousins who would be concubitant if one were a female, consequently a man's brother-in-law. _Ndauve_ (reciprocal form, _vei-ndauveni_)--Female cousins who would be concubitant if one were a male--consequently a woman's sister-in-law. _Vungo_--Nephew, _i.e._ son of a man's sister or woman's brother, also son-in-law or daughter-in-law, also used reciprocally. _Ngandina_--Maternal uncle or father-in-law; vocative form in the case of father-in-law, is _ngandi_ or _momo_. _Nganeitama_--Paternal aunt or mother-in-law; vocative form in the case of mother-in-law, is _nganei_. [Pageheader: THE CONCUBITANT RELATIONSHIP] Besides these there are compound names for some of the more remote relationships, and names for certain connections, such as _karua_ (_i.e._ "the second," reciprocal form, _vei-karuani_), used of wives of a bigamous household, and also of children of the same father by different mothers. I propose to call the Ngane (reciprocal form, _vei-nganeni_) tabu, because marriage between them is forbidden. _Vei-ndavolani_ I call "concubitants," because marriage between them is right and proper. The tabu relationship occurs-- (1) Between the son and daughter of the same parents. (2) Between children respectively of two brothers or the children respectively of two sisters, such children being male and female.