Where, on the other hand, the victim is a fellow tribesman, the sacrifice is expiatory or piacular.
Mourning offers us a first and important example of piacular rites.
The term "piacular sacrifice" (piaculum) had a wide range of meaning, apart from the examples here given.
Outside of mourning, such are the only cases of piacular rites which we have succeeded in finding in Australia.
But as piacular rites are met with even in the Australian societies, it is impossible to assign them so late an origin.
It is still surprising, it is true, that piacular rites specially destined to expiate sins, seem to be completely lacking.
piacular, pī-ak′ū-lar, adj. serving to appease, expiatory: requiring expiation: atrociously bad.
The explanation of piacular rites which we have proposed enables us to reply to this double question.
By all these signs, the characteristic traits of the piacular rites are to be recognized.
Also, fasting may be a piacular rite or an ascetic one, according to the circumstances.