Echinoid Radioles , Cidaris Wäechteri et Wissmanni. 
195 
In addition to the lateral ridges, which are not very distinct, there are 6 rows of 
fine pustules on the adoral face, and three or four rows of coarse pustules on the 
adapical face. The distal fragment (PI. XII, fig. 349) has greatest diameters 4’9 mm. 
and 4 - 7 mm., and tapers rather gradually to the extremity. The difference between 
the adoral and adapical faces can just be detected, though the lateral ridges can 
not be distinguished. ln the stoutest part are about 18 ridges with ill-defined 
pustules, and between these ridges are occasionally other lines of pustules. 
The fragment last described, in the coalescence of certain pustules to form 
ridges, reminds one of some of the specimens doubtfully referred to C. decorata. 
The same is the case with the three fragments from Section VI. Perhaps there 
was in Bakony a distinct form with pustulate ribs; but whether it should be regarded 
as local variety of C. Wäechteri or of C. decorata cannot be decided without more 
material and better micro-sections. 
The Raiblian beds of Bakony have furnished no specimen clearly belonging 
to this species. Wöhrmann (1889, p. 194) quotes the species as C. Brauni from 
the Cardita-Oolith of «Erlsattel bei Zirl, Rammelsbach und Kienberg bei Seehaus». 
The fragment of shaft from Kienberg (his pl. v, f. 13) closely resembles C. similis, a 
species included by Wöhrmann in C. Brauni; probably it belongs to C- parastad ifera. 
The other fragments, including that from Rammelsbach said to be figured (pl. v, 
f. 14), are most obscure. and while I compliment my friend on his vision I am dis- 
inclined to include C. Wäechteri among Raiblian species on such döubtful evidence. 
I have already (p. 180) suggested that they may be C. dorsata marginata or 
C. alata poculiformis. 
« Cidaris» Wissmanni. 
(Plate XII, rtgs. 352—358 & Plate XV, fig. 445.) 
1841. Cidaris spinosa Ag., Münster : Beitr. z. Petrefactenk. IV, p. 44, pl. iii, f. 16 (non L. J. R. 
Agassiz, 1840: «Ech. foss. Suisse». Mem. Soc. Helvet. IV, p. 71, pl. xxi a, f. 1). 
1846. Cidaris Wissmanni Desor in Agassiz & Desor : «Catal. raisonn. Ech.», Ann. Sei. Nat. (3) Zool. 
VI, p. 330, also separate issue p. 26. (Based on the preceding.) 
1855. Cidaris Wissmanni Desor, E. Desor : Synops. Ech. foss. p. 22, pl. ii, f. 19. 
1865. Cidaris Wissmanni Desor, G. C. Laube, Denkschr. Akad. Wiss., Wien, Math.-Nat. CI. XXIV 
Abth. 2, p. 291, pl. x, f. 8 (includes C. bispinosa Klipst., see p. —). 
1900. Cidaris Wissmanni Desor, E. K. Hesse, N. Jahrb. f. Min., Beil.-Bd. XIII, p. 227. 
1904. Cidaris Wissmanni Desor, F. Broiu : «Pachycardientuffe d. Seiser Alp», Palaeontogr. L, p. 156, 
pl. xvii, f. 49 (includes C. bispinosa Klipst.). 
Diagnosis. — A Cidaroid in which the primary radioles have a micro- 
structure of fine, distinct, slightly wavy and dichotomising septa, joined by distinct 
trabeculae, forming meshes larger towards the axis, where they merge in a relativelv 
large axial complex; in which normal (peripheral) radioles are baculiform, striate 
faintly and irregularly or not at all, and ornamented with irregulär longitudinal rows 
of pustules set at irregulär intervals, varying in size from granules to thorns, and 
often reduced on one face of the shaft; collerette short, striate: annulus rounded, 
not very prominent, finely crenelate when well preserved; acetabular margin 
crenelate. 
The Holotype is the original of Münsters pl. iii, f. 16, since it was on 
13 ' 
