In the eight-class system and among the nominally four-class southern Arunta the intermarriage and descent is as follows, according to Spencer and Gillen;

A1               B1
------ = A4,     ------ = B3,
B1               A1

A2               B2
------ = A3,     ------ = B4,
B2               A2

A3               B3
------ = A2,     ------ = B1,
B3               A3

A4               B4
------ = B4,     ------ = B2.
B4               A4

In each case the male is the numerator, the woman the denominator, and the = shows the child.

Tribes with conterminous territories usually know what phratries and classes are equivalent in their systems.  In the tables which follow the phratries and the classes of matrilineal tribes are arranged to show this correspondence so far as it is known.  A * shows that no information on the point is to hand.  A rearrangement of patrilineal classes is necessary to make them equivalent to the organisations of matrilineal tribes; this cannot be shown in the tables; but full details will be found in the works of Spencer and Gillen.  A [+] indicates patrilineal descent.

Where the names of phratries and classes are translated, the meanings are shown in the tables; where the authorities do not give the translation but a word of the same form is in use in the tribe or group of tribes the meanings are given in round brackets; words in use in neighbouring tribes are put in square brackets.

TABLE I.

The Class Names.

Class names             Feminine         Meaning
I. Muri (Bya)[48]            Matha              (Red kangaroo)
Kubi                      Kubitha            (Opossum)
Kumbo (W[=o]mbee)[49]     Butha
Ipai                      Ipatha             (Eaglehawk)

These class names are found in the following tribes: 

Kamilaroi (Howitt, p. 107); Wiradjeri (ib. 107); Wonghi (ib. 108); Euahlayi (Mrs L. Parker, Euahlayi Tribe, p. 13); Ngeumba (Mathews in Eth.  Notes, p. 5); Murawari (id. in Proc.  R.G.S.  Qu., 1906, 55); Moree (R.G.S.  Qu. X, 20); Turribul (R.S.  Vict. I, 102); Wollaroi (Howitt, 109); on Narran R. (Curr, I, 117); Pikumbul (ib.); Unghi (Howitt, 217); Peechera (Curr, III, 271); Wailwun (ib. I, 116); Wonnaruah (Sci.  Man, I, 180); Geawegal (Howitt, 266).

Associated with these class names are the following phratry names: 

(a) Kamilaroi, etc.  Dilbi Kupathin (b) Wiradjeri to N. of Budthurung Mukula
       Lachlan
(c) Wonghibon Ngielbumurra Mukumurra (Howitt) (d) " & Ngeumba {Ngumbun Ngurrawan (Mathews)
                               {Numbun
(e) Euahlayi Gwaigullean Gwaimudthen (f) Murawari Girrana Merugulli