Diade.ma.toid Radioles. Asteroiden. 
235 
but speckled, central area in the cross-section may represent either a lumen or an 
axial complex of loose stereom. Its diameter is 07 mm., or one-third of the vvhole. 
On each side of the shaft are traces of longitudinal ribbing. The surface of the 
shaft is weathered and shows no longitudinal striae. The base is not quite perfect, 
but there is no doubt as to its having been remarkably small. The greatest diameter 
of the annulus is 07 mm. The height from the acetabulum to the top of the 
annulus was about 0'4 mm. The collerette is represented by a slight ridge immed- 
iately above the annulus. 
ASTEROIDEA 
Order: PHANEROZONIA. 
« Astropecten » Pichleri. 
(Plate XIII, figs. 435—437.) 
1889. Astropeclen Pichleri S. von Wöhrmann, Jahrb. geol. Reichsanst. Wien, XXXIX, p. 192, pl. v, f. 11. 
Diagnosis (after von Wöhrmann). — Marginals and oculars closely beset 
on the outer edge with rounded pustules, which are more or less developed accord- 
ing to the Position they occupy. Oculars cordiform. 
The original specimens comprised two terminals or oculars and a few margi¬ 
nals from the Cardita-Oolith of the Gleirschthal, of Haller Salzberg, of Rammels¬ 
bach near Seehaus, and elsewhere. 
Since Dr. von Wöhrmann did not indicate a holotype, 1 select the ocular 
from Rammelsbach, represented in his f. 11a. It is in the Palaeontological Museum, 
Munich, and has been kindly lent to me for study, as well as the three other 
tigured specimens. 
The holotype is rather worn, but is more complete than the other ocular 
(f. 1 1), for in that the ventral half has been cleaved away. The measurements of 
these specimens in millimetres are : 
f. n 
1'. 11 a 
length 
2.6 
2.4 
width 
3.1 
3.1 
thickness 
— 
1.8 
Of the two marginals flgured, that shown in f. 117? is T2 mm. thick; the original 
of f. 11 c is 075 mm. thick. 
Specimen from B a k o n y. — This is a single ocular or terminal plate, 
from the Cassian bed e 4 of Section VI, Veszprem. It is 4’4 mm. long, 4'3 mm. 
in greatest width, and 2'6 mm. in greatest thickness. The outline is triangulär with 
truncate angles. The «heart-shaped» appearance is enhanced by the ventral groove, 
which is 0 - 9 mm. deep and 2’1 mm. in greatest width. The pustules of the dorsal 
surface, are, as in the original of Wöhrmann’s f. 11 most pronounced near the 
narrow end. The truncate angles of the wider end face ventral-wards and are 
excavated by a slight groove, presumably for the ligamentar attachment to adjacent 
marginals. A similar, but less distinct, groove marks the base of the ossicle. Con- 
sequently the wider end may be regarded as proximal. The groove bends upwards 
slightly at the distal end, but is not returned on the dorsal surface. 
