168 Triassic Echinoderms of Bakony. 
the higher Raiblian horizon, it may reasonably be regarded as a descendant of the 
Cassain species. 
The preceding description may be summarised in the following: 
Diagnosis of A. Buchi.— An Anaulocidaris with relatively stout radioles: 
Radioli remiformes very slightly or not at all curved downwards, often slightly concave 
on inner face (length may exceed 20 mm.); Radioli spatuliformes with handle and 
blade in a continuous curve, concavity of inner face greater than 0°125 of thickness 
of blade, often greater than 0°25, distinct ridges from handle to distal margin; Radioli 
trulliformes with width never attaining twice the length, ridges from handle to distal 
angles well marked, outline four sided with rounded angles, distal margin straight 
or variously curved, proximal margin a continuous curve with a single often indistinct 
bevel on outer face, the striae passing over this are not cut across by any. other 
striae; Radioli paletiformes with curved sides, obscurely bevelled on outer face, which 
is often concave, blades stout with distinct ridges on inner face. 
We have still to consider whether all the Tyrolese specimens are A. Buchi. 
Those from the Pachycardientuffe of the Seiser Alp, described by Brom (1904), 
present a general resemblance to A. Buchi rather than to A. testudo. Nevertheless 
they are different. 
The seven specimens already collected for the Munich Museum are all small, 
being even smaller than the average A. festudo. The remiform radioles of Brom’s 
plate XVII, ff. 46 and 48, have the handle more inclined to the blade than is the 
case with the corresponding radioles in either A. Buchi or A. testudo. The ace- 
tabulum of these two specimens is not preserved. The coarsely granular outer 
face. accurately represented in f. 48, is not paralleled in either of those species; 
but in these radioles from the Pachycardientuffe this face is always, as Broil says, 
«leicht granulirt». The trulliform radiole (f. 47) has the ridges characteristic of 
A. Buchi, but has a ratio, width : length : : 196 : 100, which is closer to that of 
A. testudo. We have already noted the strongly bevelled margins of the paletiform 
radiole MM, k (Text-fig. 59). All these differences render it advisable to distinguish 
this form as at least a mutation of A. Buchi, by the name 
Anaulocidaris Bucht granulata mut. nov. 
Diagnosis. — Anaulocidaris Buchi with radioles of small length and 
breadth, the outer face granulate, remiformes having handle inclined to blade at 
47°—58°, trulliformes with width of blade nearly twice the length. 
Holotype, the original of Bromu’s pl. XVII, f. 47, preserved in-the Palae- 
ontological Museum, Munich; from the Pachycardientuffe of the Seiser “Alp. 
A*proximal fragment of a remiform radiole from the Raiblian Cardita Schichten 
of Rammelsbach Seehaus was figured by S. v. Wourmann (1889, pl. V, f. 15), and 
referred by him to Cidaris Buchi. It is preserved in the Palaeontological Museum, 
Munich, and one can only say that it is very small for that species and should 
not be placed in it without question. 
Another radiole of this genus from the Cardita Schichten is in the same 
museum, and comes from Haller Salzberg near Innsbruck. This is a spatuliform 
radiole (Pl. X, fig. 250) incomplete distally, and measuring: 
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