393 
here we are faced by the negative fact that no Asaphiscus- 
like cephalons have so far been discovered at Caroline Creek, 
that is to my knowledge. 
In the Penk Valley extension there also emat very 
similar isolated pygidia that I referred to Viobe.©) In these 
tails, varying from semicircular (correct outline) io deltoid- 
nted 
triangular (distorted outline), are long, w, segmen 
axes, with indistinct traces of pleural subdivision on th 
lateral lobes. T s, as in those of the Caroline Creek 
specimens, are broad and continuous. In all probability, to 
whatever genus these latter pygidia may in the future be 
NA, those occurring in the Florentine Yali will follow 
DESCRIPTION OF PLATES. 
Prate XXXIX. 
Olenellus (? ), sp., or Ptychoparia (? ), 8 
Fig: I Krapina cephalon aog d in raas. Roy. Soc. 
S. Austr., xxix fig. 1). 
: PEREA tatei, H. (reet sp 
Fig. 2. Imperfect cephalon, from a replica of Woodward's 
original specimen of Dolichometopus. tute E igured in the Geol. 
Magazine, i., 1884, pl. xi., fi x8 
Fig. mp h DES from one of Tate's original 
specimens of IS pritchardi (figured in Trans. Roy. Soc. S. 
ust 22 H., fig. 11). x4 pes 
| Piychoparia ( ? ) subsagittatus, Tate, 
Fig. 4. rfect cephalon, from one ef Tate's original 
Specimens of Microdiicus rubragitatus (figured in Trans. ains ‘ 
S ustr., xv., pt. 2, , pl. ii, fig. 12). x6 diam 
Fig. 5. Another similar example of Tate’s, but not pre- 
viously y Mg glabella furrows are distinctly visible in this 
Specime dia 
Dhdkabacis (?) etidm ge Woodward, s 
Fig. mperfect cep from a replica SE Wonkwand's 
original specimen of € vonocephalites australis (figured in the Geol- 
Magazine, i., 1884, pl. xi., Nat 
PrarE XL. 
Ptychoparia(?) howchini, Eth. fil. 
Fig Greater portion of a ce phalic shield, from the 
original Eee (figu in Trans. r$ Soc. S. Austr., xxii., 
idee oparia alroiensis, Eth. fil. 
Fig. 8. Nearly complete Tri = from a replica of on 
original specimen (figu red rthern Territory Bulletin 
1910, pls. ii. and iii). x4 
The illustrations were obligingly prepared for the writer by 
. Mr. J. R. Kinghorn, of the mr Museum, Sydne 
(50) Etheridge: Rec. Austr. Mus., v., No. 2, 1904, p. 26, 
Pl. x., figs. 1-3. ; i 
