188 Triassic Echinoderms of Bakony. 
The fragments figured by Lause as C. decorata (his pl. x, f.5 ¢, d, f) prob- 
ably belong to this species. 
The rarity of C. fasciculata, to which species apparently no other author has 
referred, when taken with the peculiar shape of the collerette, suggests that these 
radioles may be forms occupying a restricted region of the test in some species of 
which other radioles have been described under another name. The form, however, 
is distinct and easily recognised. 
Material from Bakony. — There is nothing that can be referred with 
certainty to C. fasciculata, but there are fragments that might as well belong to 
it as to anything else, while some of the fragments from the Cassian of Cserhat, 
already mentioned under C. decorata, may perhaps represent a species or subspecies, 
intermediate between C. decorata and C. fasciculata. Better specimens may be 
found any day, and in that event the preceding notes may prove useful. 
The Raiblian beds a—b of Section IV, Veszprém have yielded one fragment 
of a shaft that is much compressed but presents the ornament characteristic of this 
species (fig. 343). Length, 6 mm.; transverse diameter, proximal 1°5 mm.; distal 
2°3 mm.; dorsoventral diameter, proximal 0°8 mm, distal 1°2 mm.; number of 
ribs, 8 on one face, 10 rather finer on the other. This specimen may belong to 
Cidaris decoratissima, but the ornament is finer, and the shape of the fragment 
more reminiscent of some C. fasciculata. 
«Cidaris» similis. 
(Plate XII, fig. 346, & Plate XV, fig. 444.) 
1841. Cidaris baculifera Ac., MUNSTER: Beitr. z. Petrefactenk. IV, p. 46, pl. iii, f. 24 a—c (non 
C. bacculifera L. J. R. AGassiz, 1840: Ech. Foss. Suisse, Mem. Soc. Helvet. IV, p. 80, 
pl. xxia, f. 12. A Kimmeridgian species). 
1843. ? Cidaris bispinosa A. v. KL pstEIN: Geol. Ostl. Alpen, p. 272, pl. xviii, f. 12 a, b. (non C. bi- 
spinosa Defrance, 1817. Made synonym of C. /Vissmanni Dtsor by Lause, 1865 and 
Broil, 1904). 
1846. Cidaris Braunii Desor var. C. baculifera MUwxst., AGassiz & Desor: «Catal. raisonn. Ech.» 
Ann. Sci. Nat. (3), Zool. VI, p. 335. Also separate issue, 1847, p. 31. (non C. Braunii 
Desor; vide sub C. Waechteri). 
1849. ? Cidaris subbispinosa A. C. D. p’OrBIGNY, Prodr. Pal. stratigr. I, p. 205, (Replaces C. bispi- 
nosa KLIPsT ) 
1855. Cidaris similis E. Dison: Synops. Ech. Foss. p. 22, pl. ii, f. 28 (reproduces MUnsTeEr’s f. 24 
a, b. «Peut-étre ... une variété grele du C. Braunii>). 
1855. ? Cidaris bispinosa K.utrsrEIN, E. Desox: Synops. Ech. Foss. p. 22, pl. ii, f. 18. 
1863. Radiolus similis Desor, H. E. BeyricH: Monatsber. preuss. Akad. Wiss. Berlin, Jahr 1862, 
p. 31. (a specimen from Fiissen, like Munsrrr’s f. 24 a.) 
1865. Cidaris Braunii Desor, G. C. LauBE; Denkschr. Akad. Wiss. Wien, Math.-Naturwiss. Cl. XXIV, 
Abth. 2, p. 293, pl. x, f. 6 e, f. (non 6 a—d, which really are «C. Braunii>.) 
1900. Cidaris similis Desor, E. K. Hesse: N. Jahrb. f. Min., Beii.-Bd. XIII, p. 227. 
1904. ? Cidaris Brauni Dtsor, BRoILI: Palaeontographica, L, p. 155 (pars, ? pl. xvii, f. 27). 
Diagnosis. — A Cidaroid in which the primary radioles have a micro- 
structure of fine, close-set, wavy, dichotomising and anastomosing septa, with small 
axial complex; in which normal (peripheral) radioles are baculiform, with’ shaft 
dorsoventrally compressed, longitudinally striate, and ornamented with regular long- 
itudinal rows of strong, discrete, subequal pustules, usually thorn-like, more pro-. 
