26 
K. L. Prendergast. 
Description . — See Prendergast 1934, p. 15. 
Demarks . — In the earlier specimens of this species examined it was- 
noted that the specimens did not agree with the generic description since the- 
spines were less crowded anteriorly. Specimens in a better state of preser- 
vation have since been obtained and these show that the inclusion of the 
species in the genus Waage^ioconcha is quite justified. In these specimens the 
spines are crowded together on concentric wrinkles on the older parts of the 
shell. The absence of this feature on the earlier specimens Avas undoubtedly 
due to exfoliation of the outer layers of the shell leaving only coarser pustules 
more widely spaced. 
When this species was originally described no copy of Broili^s (1916)- 
work on the Permian Brachiopoda of Timor was available and a new species 
was founded to contain specimens which belong to Productus \caageni Roth- 
pletz as figured by Broili. Comparison of the Western Australian specimens 
with Broili’s figured specimens and with others from Timor (Basleo, Neoet- 
pantoekak, Toenion Eno, Timor. B.M. B. 98397, 98985, 98648) leaves no 
aoubt on this point. The Western Australian name is retained because it is' 
doubtful if P. waageni Broili is identical with P. waageni Rothpletz. 
Rothpletz’s figures of P. waageni (1892, pi. x. fig. 19) show a small shell 
transversely oval in outline, ornamented Avith fine closely set spine bases. It 
shoAvs no groAvth lines and has a very Aveak sinus in the pedicle valve. But 
Rothpletz compares his specimens Avith P. lmmhold,ti as figured by Waagen 
(1884, pi. Ixxvi. figs 1-3), a rather surprising comparison as most of the 
specimens figured by Waagen have Avell-marked concentric ornamentation. 
Indeed Rothpletz’s figures (pi. x. fig. 20) of P. ahiclii are more like P. kum- 
boldti AVaagen. If P. waageni Rothpletz is identical A\fith P. u'aageni Broili. 
then the absence of growth lines on Rothpletz's type is due to AA’eathering or 
to individual variation. Without inspection of the type specimen of P.. 
waageni Rothpletz, this species must be regarded as Avithout growth lines. 
Waagenoconcha vagans Reed. 
PI. iii, fig. 6. 
19.31. — Waagenoconcha vagans Reed, p. 9, pi. ii, fig. 2. 
Material . — One brachial valve, IT.AV.A. 20459, north flank of Mt. Cedric,, 
Kimberley Dhfision. LiA'erynga Series. 
Diagnosis . — Shell trapezoidal to almost square in outline, hinge-line less 
than the greatest Avidth of shell. 
Pedicle valve sinuate, umbo SAA^ollen and overhanging hinge-line, ears 
fiat. Ornamentation of small spine bases quincuncially arranged, pits 
occurring betAveen spine bases. 
Brachial valve fiat Avith shalloAv median folds, margins geniculated. 
Description . — This s])ecies is knoAvn in AVestern Australia only as an- 
external cast of a brachial valve. 
The shell is trapezoidal in outline, the greatest Avidth at the anterior- 
margin, this and the hinge-line being the parallel sides. The hinge-line is 
short and ecpial in length to half the maximum Avidth of the shell. The fiat 
visceral disc is divided medially by a shalloAv fold, the fold AA-idening an- 
teriorly. Laterally and anteriorly the margins of the valve are geniculated to 
form a fringe. The surface of the shell is ornamented by numerous holloAvs 
and spine bases quincuncially arranged (18 spine bases in 10 mm. 20 mm. 
from umbo), resembling the ornamentation of IT. imperfecta mihi. Numerous^ 
groAvth lines cross the surface of the valve. 
