52 AUSTRALASIAN ANTARCTIC EXPEDITION. 
The generic distribution is shown in the following table. The most commonly 
occurring genera are Crania, Hemithyris, Terebratulina, Liothyrella, Terebratella, 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 Magellanine. _Kraussina is similarly restricted except for a 
single species, K. gardinera Dall, in the Northern Indian Ocean. 
= = = ” é r; — 
84| |¢/elal]2l]el¢e/2}4 5 
se|:|2l/elelealéeleleiele/F& 
wee oS 3 B & =, fl > = Fs 
Bele /S/s/2)2le|flele|e\e 
A ] <q A 1 Na D = va R iva) <q 4 
CRANIACEA. | 
Crama act sk, 53: et ale ZE Tp ae || or x Se i 
DISCINACEA. 
Discinisca... He: +, ne CHa DY Ree earl bereall say ttetysch ero all if 1 eat x 
LINGULACEA. | | 
Lingula er! we Ne Ae: FA a cent eed vce |g? ich |S uy he Pa x 
RHYNCONELLACEA. | 
Cryptopora ih |} x x 
Aetheia at ee | 
Hemathyris 3 x x | |x | x 
Frieleia 1 | | el ss 
TEREBRATULACEA. | | | | 
Terebratulide xy Ven Wi, nll a 
Agulhasia IP it sy ex | 
Murravia 1] x 
Terebratulina ... AS Scan, Me ak x 
Liothyrella os a oy ail BYl)Se |p x S| eYzel| See | bee] ee x 
“* Terebratula Lnothyrina”’ ox “ Inothyris” | ... |... |... |... | x | x | x | x | we | ce | eee | ee 
Terebratellide. 
Argyrotheca 1| x | | x 
Amphithyris ... In iex | | X 
Platidia 13 | bey an pay eral x 
Kraussina 2| x [68 | 
Megerlina 2] x x | 
Aldingia 15 ex 
Bouchardia IF} Ap fy ||, 3% | 
Magadina 1] x | aut | 
“ Magasella”’ ... 1| x 
Campages 1] x ay 
Terebratella 43 | |epscn | ean aaliex | 2 
Gyrothyris 1 x 
Magellanias. str... rt ys eae Le | LOX Ma | Be eee OR Soe Ty coy | re ; : 
** Magellania”’ or “ Waldheimia” Ani) tide 1] ore lp eesch lp tkea | me gs fp BR | ge || oe 
Neothyris Ae 1 xh Ord | | 
Stethothyris ... hy of my 1 cal ES 
Higher members of the Magellaninw GE] se |e | ge be nll eon | Xe | SCN 
Frenulina Laas | ees she | 
Macandrevia . 2 rte | x fo, ox 
| 
! | 
