38 
Triassic Echinoderms of Bakony. 
The average ratio of height to diameter is 29‘75:100, which is nearly the 
same as in the type-specimens of I. tyrolensis. Section a pentapetalon, becoming 
strongly lobate at the epizygals, so as to resemble that of var. « 
Number of internodals, 5. 
Joint-faces. — Normal, not well preserved, and adradial crenellae not distinguished; 
peripheral crenellae few, about 6 or 7. Epizygal, raised peripherally and centrally, 
but not radially , peripheral crenellae obscured, subconfluent, 10 to a petal. Hypozygal, 
raised peripherally, but petal-floors very slightly raised; radial depression short and 
not passing to central area. 
Relations of the Variety. — Had these specimens been found in 
association with I. tyrolensis or even with its mutation tnajor, one would probably 
have considered them merely as having belonged to young individuals, in spite of 
certain objections. But since thev occur isolated, those objections gain force. The 
relative shortness of the epizygals, and the absence of marked Variation in the 
heights of adjacent columnars, as well as the invariable number of 5 internodals, 
are not characters of youth, but suggest that the specimens may represent a dwarf 
variety. 
Isocrinus candelabrum n. sp. 
(Plate III. figs. 61—76.) 
Diagnosis. — Transverse section varies from sub-concavi-stellate, through 
slightly quinquelobate and subpentagonal, to subcircular. Height of internodals about 
one third their diameter in adult to one half their diameter in younger stages; or diameter 
taken as 100, height is from 27 to 52 (aver.age 40). Side-faces smooth, straight, 
sometimes slightly concave, slightly convex, or slightly sinuous; interradial angles 
of epizygal tend to be swollen at half their height. Suture-lines flush, crenelate 
all round, except at syzygies. 
Joint-faces. — Normal: lumen minute, subcircular or subpentagonal, central area 
raised, wide, continuous with perradial crenellae; petal-floors very narrow and 
rather short; radial ridge-groups of one or two or three pairs, according to size, 
the adcentral pair usually merged in an indistinct straight ridge at right angles to 
the radius, the acentral pair meeting at rather less than 90°; peripheral crenellae 
long, from 5 to 8 in a petal according to size, curving from the interradius to the 
periphery like the branches of a seven-branched candlestick, widening slightly, but 
in no degree confluent. Syzygial: lumen larger; epizygal a pentapetalon with a 
slight indefinite rim and scarcely a trace of crenellae; hypozygal, margin markedly 
raised at radial re-entrant angles, less raised around petals, radial spaces sometimes 
slightly raised, petal-floors may be slightly raised, but if not, then the whole petal 
appears slightly concave ; between the narrow floors and the periphery are faint 
traces of the long radiating crenellae. 
Cirrus-facet deeply indented in lower half of epizygal. Distal face of cirral 1 
flush with columnar side-face, transversely elliptical, almost circular; rim stout; 
fulcrum, surrounding lumen, rises gradually from floor, more steeply on upper slope 
so that the lumen is supracentral. 
Material. — The following specimens have been studied : 16 stem-fragments 
from Cserhat (Leitnerhof) lettered a-p; 1 internodal from Jeruzsälemhegy, lettered q; 
