Fig. 1. 
Fig. 2. 
Fig. :J. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Fig. 12. 
PLATE XXI. 
Page. 
Fhillipsia (hihia,^t\\ev\d'^e... ... ... ... 12.5, 12(> 
A decorticated individual, with lialf the cephalic shield preserved, of which the 
glabella is rather pinched up along the middle line, x 2. 
A decorticated pygidium and impression of the glabella of another specimen, 
showing the true outline of the latter, x 2. 
Glabella and portion of tlie thorax of a third individual. The outline of the 
former i.s intermediate between that of Figs. 1 and 2, x i. 
The largest known pygidium of this species — a portion of the left pleura 
wanting, x 2. 
Pliillipsia f/randis,^t\\. \\\.... ... ... ... 12->, 128 
Portion of a very imperfect pygidium, but with the proportions correctly shown 
in outline. 
PhiUipsia, up. irul. (a) ... ... ... ... 12.5, 129 
Pygidium, iu outline much more semicircular than that of P. duhia, and with 
the axis and pleimc much less angled, x 2. 
Another example of the same form. 
A third pygidium, imperfect along the lower margin, but differing in a similar 
manner from P. duhia. 
Carhonia australis, Eth. fib... ... ... ... ... 121 
General side view of valve, x 24. 
Elevation, or edge view, to show the convexity of the valve, x 24. 
End view, x 24. 
Muscle spot, highly magnified. 
Figs. 1-4, 6 and 7, from Binge Berry, Rouchel Brook. 
Fig. .5, ,, Crow’s Nest, Mount Morgan, Queensland. 
]’ig. 8, ,, Musclebrook. 
Figs. 9-12. ,, Wollombi Boad, near West Maitland. 
