hr* kri 
PLATE XXII. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
'IK. o. 
Fig. G. 
Fig. 7. 
Fig. 8. 
ig. 0. 
ig. 10. 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Page. 
Archceocidaris, sp. ind. ... ... ... ... ... 60 
An impression of a part of one of the poles of a species allied to, but probably 
smaller than A. Selin/nii. 
Tribracliiocrinns r/rnnulafuif, Eth. fil. ... ... ... 07 
Dorsal view of a decorticated specimen resting in its mould and showing the 
orii’inal thicl<ness of the plates. 
The decorticated calyx removeil and resting on its ventral surface. The some- 
what crushed azygous plate is jiresented to the observer. 
Perieclioci'inus ? indicator, Eth. til... ... ... ... 78 
Side view of a decoi'ticated half calyx, showing two basals, and a nearly com- 
plete radius within the calyx, of first, second, and third radials. 
Pliialocrinus princeps, Eth. til. ... ... ... ... 110 
A large basal plate, seen from the inside, with the concentric deposition rings 
visible on the surface and in section, the latter rather oblique. This plate is 
<|uite equal in size to either of the basals shown in PI. XVIII, Fig. 1. 
Trihrachiocrinnn ClarJcei,^1.^Qoj? ... ... ... ... 90 
Basal plate, seen from the exterior, without ornament, but a depression or pit in 
the centre. 
Interior of the same plate, showing the concentric structure-ornament. 
Exterior of another rather more convnx plate, a radial, probably of this species, 
a like eccentric partial depression is also visible. 
Interior of Fig. 8. 
First, or bottom plate of the ventral tube, which reposes on the truncate upper 
edge of the azygous plate, seen on edge in PI. XIII, Fig. 4. 
Another and similar example, x 2. 
Phillipsia duhia, Etheridge.., ... ... ... 125, 126 
Eye, partially preserved to show facets, x 3. 
Section of the thorax. 
Phillipsia ? sp. ind. (h) ... ... ... ... 125, 120 
Fig. 11. A pygidium similar in foi’m to those depicted in PI. XXI, Figs. 6-8, but with the 
segments ornamented with intermingled grannies, x 
GriJ/ithides ? sj). ind. ... ... ... ... ... 130 
Fig. 15. Pygidium showing the tubercnlated segments and limb. 
Fig. 13. Side view of the right pleura of another specimen, with the tubercles prodneed 
into spines. 
Fig. 1, 3, 
from 
Dag worth. 
Fig. 4, 
Wallumba. 
? J 
Co. Northumberland. 
Figs. 6-10, 
Minumurra Iviver. 
Fig. 11, 
Ulladulla. 
Figs. 12-13, 
Binge Berry, Eouchel Brook. 
Phg. 14, 
Green Hills, Paterson. 
„ 15, 
Back Creek, Co. Durham. 
» 10, 
55 
Parish of Tudor, Co. Durham. 
