Permian Productinae and Strophalosiinae of W.A. 
27 
From its impression the umbo of the pedicle valve seem to be swollen 
■and overhanging the hinge-line. 
The brachial valve has a length of 29 mm., with a maximum width of 
-38 mm.; the length of the hinge-line is 24 mm. 
Remarks , — This species was first described by Reed from the middle 
Productus Limestone at Kumaranwali in the Warcha Valley of the Western 
Salt Range. It is characterised by the ornamentation in conjunction with the 
geniculation of the brachial valve. 
TAENIOTHAERUS Whitehoiise. 
1928. — Whitchouse, }iep. Aust. Ass. Adv. Sci., vol. xviii, pp. 281, 282. 
Genotype. — Productus svA) quadrat us Morris, 1845, in Strzelecki, Physical 
description of N.S.W. and Van Diemen's Land, p. 284. 
Diagnosis . — Adult shell large, general outline subquadrate to elongate 
■oval; pedicle valve evenly convex with median sinus; brachial valve slightly 
■convex to flat with upturned margins. Pedicle valve sometimes with trian- 
gular concave area; delthyrium, where present, partially filled by triangular 
■extension of cardinal margin of brachial valve. 
Ornamentation of coarse elongated spine bases possibly giving rise to 
long spines; spine bases not continuous into costae. Irregular concentric 
wrinkles or lamellae widely spaced over whole shell. 
Muscle impressions as in Aulosteges and Productus. Brachial valve with 
median septum. Cardinal process large, varying angle of inclination to ear- 
‘dinal margin. 
Remarks . — For description of this genus see Prendergast, Proc, Roy. 
■Soc. Tasmania.* 
Taeniothaerus subquadratus (Monas) . 
PI. iv, figs. 1-6. 
1845. — Productus suhquadratus Morris in Strzelecki, p. 284. 
l^^2.~Productus svhquadratus Morris, Etheridge and Jack, u. 282 ul. 
xxxviii, figs. 7-10; pi. xl, fig. 5. ' 
1907. — P. subquadratus Morris, Etheridge, jnn., p. 21, pi, iii, figs. 6 and 7 
(in the plate fig. 7 is labelled as fig. 1). 
1907.— P. snhquadratus Morris (?), Etheridge, jun., p. 30, pi. vii, figs. 2, 4; 
pi. viii, fig. 1. 
1909. — P. suhquodratus Morris, Etheridge and Dun, p. 300, pi. xli, figs. 1-5. 
1910. — P. subquadratus Morris, Glauert, p. 87. 
1914. — Aulosteges baracoodensis Eth. fil., Etheridge, jun., p. 33, pi. iv, figs. 
1931. — P. mibquadratus Morris, Hosking, pp. 8, 22. 
1933. — P. subquadratus Morris, Hosking, p. 36. 
1933. — Aulosteges cf. A. spinosus Hosking, p. 36. 
1935. — P. subquadraPus Morris, Prendergast, p. 17, pi. iv, fig. 4. 
Jlolotype. — B.M. 91171, Mt. Wellington and Mt. Dromedary, Tasmania. 
Other Material— U. W.A. 4768, 12396, 20450, 21247, Fossil Cliff, Irwin River. 
Fossil Cliff horizon. 
U.W.A. 10931, two miles north of Ballythanna Hill, Wooramel River Dis- 
trict. Byro Sandstone. 
U.W.A. 20447, below Coolkilya Pool, Minilya River, North-West Division. 
Wandagee series. 
G.S.W.A. 10930, Mt. Marniion Kimberley Division. Exact horizon not known, 
G.S.W.A. 10929, locality and horizon not known. 
G.S.W.A. 1/4655, locality and horizon not known. 
* In January, 
of Tasmania on this 
appeared. — E. deC. 
1941, Dr. Prendergast had completed a paper for the Royal Society 
subject, and was awaiting the illustration^i, but the paper has not vet 
Clarke, 22/3/43. 
