162 Triassic Echinoderms of Bakony. 
The ridges of A. Buchi, though visible in the figures of Münster (1841). 
Desor (1855), Laube (1865), Quenstedt (1875), and Zittel (1879). were not men- 
tioned by any of those authors. They were hrst alluded to in the description of 
the trulliform radioles by Benecke (1884). 
3. R a d i o 1 i trulliformes. 
(Pl. X, fig. 245.) 
The specimens examined are the following : 
f) 
(MM) In the Palaeontological Museum, Munich. 
Text-fig. 50. 
Registered 1894, XIII, 293. From «Stuores Wiesen bei St. 
Cassian. Mittl. Cass. Sch.» This radiole is almost in the paletiform 
stage. The absence of characteristic trulliform radioles from ’the 
Munich collection is remarkable. 
See Pl. X. 
fig. 245. 
The handle and a small portion of the blade of what may 
have been a trulliform radiole. Its chief importance lies in the fact 
that it is borne on the same tablet as the heautotype MM, d. Width 
of annulus 2'7 mm.; thickness of annulus 1'9 mm.; height of colle- 
rette 0'6 mm. to l'l mm. Blade crushed. Along the edge where the 
outer face bends sharply from the slope of the handle, the shiny 
epistereom is raised in a denticulate ridge. From St. Cassian. 
(HMW) In the Hof-Museum, Wien. 
k) 
Text-fig. 51. 
Greatest length.14'1 
Greatest width.24'8 
Thickness across ridge (x — y). . 2'4 
Thickness of blade over all . . 2'6 
Thickness in median line . . . 1'8 
Width of annulus.3'2 
Thickness of annulus.2'2 
From the Stuores Mergel, St. Cassian, ex Coli. Klipstein. 
D 
Text-fig. 52. 
Greatest length. 
. 14*2 
Greatest width ...... 
. 23'4 
Thickness across ridge (x — y). 
. 1'8 
Thickness of blade over all 
. 2'6 
Thickness in median line . 
. 1'5 
Width of annulus. 
. 3'6 
Thickness of annulus . . . 
. 2 3 
From the Stuores Mergel, St. Cassian, ex Coli. Klipstein. 
