52 
AUSTRALASIAN ANTARCTIC EXPEDITION 
The generic distribution is shown in the following table. The most commonly 
occurring genera are Crania, Hemithyris, Terebratulina, Liothyrella, Terebratdla, and 
Magellania, of which the last three only are restricted to a southern habitat. In addition 
to them the following less commoner genera are also peculiar to southern seas :— Aetheia, 
Agulhasia, Murravia, Megerlina, Aldingia, Bouchardia, Magadina, Campages, and the 
higher members of the Mggellanince. Kraussina is similarly restricted except for a 
single species, K. gardinera Dali, in the Northern Indian Ocean. 
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Craniacea. 
Crania 
4 
-X— 
X 
X 
-x 
X 
Disginacea. 
Discinisca 
1 
X ... 
X 
Lingulacea. 
Lingula 
1 
X 
X 
Rhynconellacea. 
Cryptopora 
1 
X 
X 
Aetheia . 
1 
X 
Hemithyris 
3 
X 
X 
-X 
Frieleia 
1 
-x 
X 
Terebratulacea. 
Terebratulidfe. 
Agulhasia 
1 
X 
... 
Murravia 
1 
X 
Terebratulina ... 
4 
X 
X 
X 
Liothyrella 
“ Terebratula Liothyrina ” or “ Liothyris ” 
5 
X 
X 
X 
X 
X 
X 
X 
X 
Terebratellidse. 
Argyrotheca 
1 
X 
X 
Amphithyris ... 
1 
X 
X 
Platidia 
1 
X 
X 
Kraussina 
2 
X 
X 
Megerlina 
2 
X 
X 
Aldingia 
1 
X 
Bouchardia 
1 
X 
Magadina 
1 
X 
“ Magasella ” ... 
1 
X 
Campages 
1 
X 
Terebratella 
4 
X 
X 
X 
V 
X 
? 
Gyrothyris 
1 
X 
Magellania s. str. 
4 
X 
X 
X 
“ Magellania ” or “ Waldheim ia ” 
Neothyris 
1 
X 
X 
X 
X 
X 
Stethothyris 
1 
X 
Higher members of the Magellanince 
8 
-x 
X 
X 
X 
X 
V 
X 
X 
X 
Frenulma 
1 
X 
X 
Macandrevia ... 
2 
X 
X 
X 
