538 PROCEEDINGS OF SECTION F. 
The following main points may be noted: 
(1.) The almost universal existence of a practice of 
betrothal. 
(2.) The change of descent in certain tribes, accom- 
panied by the decay, extinction, or mere 
localisation of the class-names. 
(3.) To this must be added the passage from “ group 
marriage’ (piraruru-marriage) in such tribes as 
the Ugarabana and Dieri to individual marriage 
in such tribes as the Woéworung. 
‘ 
I have brought this matter under the notice of this 
Section in the hope that some members may be in a position 
to obtain tabulated statements from actual individuals 
extending over three levels in a generation, in tribes having 
the four sub-classes. If this can be done it will set at rest 
a question which has so far not been verified. It will con- 
nect the most primitive form of the marriage rule shown by 
the Ugarabana with the rules of the four sub-class system, 
which have been already connected by Messrs. Spencer and 
Gillen with those of the eight sub-class tribe of northern 
Central Australia. 
This will therefore complete the series of diagrams which 
will illustrate the marriage rules of Australian tribes which 
I have prepared for a work which I have now in hand. 
