PLATE VI, 
Tiarecliinus, ?, sp. 
128. Supposed fragment of an interambulacrum 
from Cserhät, with the adambulacral border 
on the right hand, X 3 diam. 
Pag. 
68 
Triadocidaris persimilis. 
(Figs. 129—134 from Cserhät.) 
129. Specimen c, interambulacrum from the side, 
adoral end on left hand, X 10 diam . . 74 
130. Specimen c, interior view of interambulacrum, 
adoral end uppermost, X 5 diam. ... 74 
131. Holotype, specimen a, from the adoral end, 
X 5 diam.70—73 
132. Holotype, part of the ambulacrum, showing 
the precise relation of its plates to the 
denticles of the interambulacral plate under 
which it is pushed, X 10 diam. . . . 72, 73 
133. Holotype, interambulacrum and ambulacrum 
from the side, adapical end uppermost, 
X 3 diam.70—73 
134. Holotype; the structure of the ambulacrum. 
and its relation to the denticles, X 20 diam. 
Compare text-fig. 10.73 
Triadocidaris praetcrnobilis. 
(Figs. 135—138, all X 5 diam.) 
135. Specimen b, from Cutting I, Veszprem—Jutas 
Railway. Two interambulacrals, external 
view, adradial margin on left hand . . 76, 77 
136. Specimen b, internal view, adradial margin on 
right hand.76, 77 
137. Specimen b, side view, from broken inter¬ 
radial margin.76, 77 
138. Holotype, part of an interambulacrum from 
Jeruzsälemhegy ; external view and elevation 
of a main tubercle.76—77 
Triadocidaris cf. T. praetcrnobilis. 
139. Specimen a, an interambulacral from Jeruzsä¬ 
lemhegy ; external view, X 5 diam. ... 78 
140. Specimen a ; side-view from transverse margin, 
X 5 diam.78 
Triadocidaris immunita. 
i^Figs. 141 - 149. All from Jeruzsälemhegy.) 
Pag. 
141. Holotype, specimen a ; adoral end of an inter¬ 
ambulacrum, external view, X 3 diam. . . 80 
142. Holotype, side view, adoral end on right hand, 
X 3 diam.82 
143. Holotype, internal view, showing denticles, 
adradial ridge, and peristomial processes, 
X 3 diam. . . 82 
144. Specimen e, two interambulacrals; external 
view, adradial margin on right hand, X 3 
diam.81 
145. Specimen e ; the smaller interambulacrum, seen 
from the grooved transverse margin, X 5 diam. 80 
146. Specimen e ; internal view, denticulate adradial 
margin on left hand. The bevelled trans¬ 
verse margin of the larger plate is shown; 
X 5 diam.81 
147. Specimen b, adoral end of an interambulacrum; 
internal view, showing peristomial processes 
and apparent alternation of denticles, X 3 
diam.81, 82 
148. Specimen b ; side-view, adoral end on left 
hand, X 6 diam.82 
149. Specimen b ; external view, x 3 diam. . . 80 
Miocidaris sp. indet. a 
(Figs. 150—152, from Cserhät. All x 5 diam,) 
150. Specimen b, an interambulacral; side-view, 
showing the bevels of the transverse margins 89 
151. Specimen b ; external view.89 
152. Specimen a, an interambulacrum; external view 89 
Miocidaris verrucosus. 
(Figs. 153—156, all X 5 diam.' 
153. Holotype, from Quarry near Cutting I, adoral 
fragment of an interambulacrum ; external 
view.90 
154. Holotype ; internal view.91 
155. Holotype ; side-view of part of the adradial 
margin, showing how it becomes more vert- 
ical towards the oral end.90, 91 
156. Specimen b, portions of three interambulacrals 
on matrix.90—91 
All figures drawn from nature by A T. Holligk ; but fig. 134 has been completed, under the Author s 
direction, by A. H. Searle, owing to Mr. Hoelick’s illness. 
