176 
Triassic Echinoderms of Bakony. 
Of the two radioles from Section XI, the one here considered, a, (figs. 278, 
279) approaches both the infra-ambital form known as C. semicostata and a small 
C. dorsata. The other radiole (b) from this locality (fig. 280) broadens distally 
and its adapical face bears strong Ornament; it probably belongs to mutatio poculi- 
formis. 
C. alata poculiformis mut. nov. 
(Plate XI, figs. 280—309, and Plate XIV, fig. 441.) 
1857. ? Cidaris alata A G., F. v. Hauhr : Sitz.-Ber. Akad. Wiss. Wien, XXIV, p. 565. 
Diagnosis.— C. alata in which, as compared with norm, peripheral 
radioles have as a rule a coarser micro-structure, the radiate septa of the inner 
layer merging in the axial complex, lateral keels more serrated, and adapical pustules 
more marked ; adapical radioles more differentiated into hollowed forms. 
Material. — 33 radioles from the Raiblian beds of Jeruzsälemhegy of 
which 9, selected for figuring, are lettered a — j; these are mostly characteristic, but 
one or two verge on C. dorsata. 9 radioles or fragments of radioles of very diverse 
shape, from the Raiblian beds of Cutting I on the Veszprem-Jutas railway ; 4 are 
lettered a — d. Also perhaps specimen b from Section XI. 
Specimen / from Jeruzsälemhegy, drawn on Plate XI, figs. 301, 302 is taken 
as h o 1 o t y p e. 
Description of the specimens. — Infra-ambital radioles appear to 
be represented by a few small specimens, from Jeruzsälemhegy, of the type usually 
called C. semicostata (vide supra). Two of these, lettered a and b, are shown in 
figures 281—286. 
The radioles presumed to be ambital or peripheral are still very like the 
ordinary C. alata subalata , although some have stronger pustulation on the ad¬ 
apical face. Two specimens from Jeruzsälemhegjq lettered c and d , are figured. 
The formet - (figs. 287—289) is slightly weathered; in the latter (figs. 290—293) 
the coarse adapical pustulation, with its tendency to run in oblique rows, is well 
shown. The following are measurements in millimetres. 
Length. 
Greatest diameter — transverse . 
Greatest diameter —- dorso-ventral 
Diameter at annulus — transverse . . . 
Diameter at annulus —- dorso-ventral . . 
Height of collerette. 
Number of pustules in a length of 2 mm. 
on adapical face. 
c 
d 
22’2 
24’8 
7’4 
8’4 
4’8 
6*2 
1’8 
2’3 
1*5 
2 0 
0'9 
1’4 
3 to 4 
2 
There are about a dozen other radioles of this form from Jeruzsälemhegy, 
and many of them differ still more from the corresponding radioles of C. alata 
subalata. The pustules of the adoral face tend to run in longitudinal series, which 
at the distal end may form pronounced ridges. The pustules of the adapical face 
are often still coarser than in c and d. The lateral keels may be irregularly serrated, 
owing to the incomplete fusion of the spinelets that form them. Sometimes 
