Crinoidae, Pentacrininae. 45 
perradial crenellae, and the whole rosette are quite distinct from those of J. 
candelabrum. : 
The appearance of the smooth, high internodals, surmounted by the swollen 
and indented nodal, has suggested the trivial name, from scipio, a truncheon or 
baton of office. 
A patina, doubtfully referred to J. scipio, is described infra (p. 56). 
Isocrinus sceptrum nv. sp. 
(Plate IV, figs. 90—101.) 
Diagnosis. — Transverse section slightly quinquelobate at intervals, but may 
approach subpentagonal or even subcircular; more stellate at syzygies. Extremes of 
diameter observed, 1°0 mm. and 2°8 mm. Diameter of internodals taken as 100, 
height varies from 80 to 30, the average of 22 specimens being 46°5. Nodals slightly 
higher than internodals, and hypozygals about */, height of adjoining internodals, 
Side-faces concave, especially radially, but sometimes raised again at half the height, 
usually only in the radial hollows, and so tending to scalariform. Radial hollow of 
epizygals sharper and deeper, interradial angles projecting as narrow rounded ridges, 
arcuate in side-view, not extending over hypozygals, which, however, are slightly 
excavate radially. Suture-line raised, crenelate all round, sometimes beaded. Internodals 
5 to 8, usually 6. 
Joint-faces. Normal: lumen minute, subcircular or subpentagonal; central area 
slightly raised, vermicular, reaching perradial crenellae but not merging in them; 
petal-floors flush, pyriform, with straight sides and regularly arched ends; radial 
ridge-groups frequently only one pair, at an angle of 60°, enclosing a slight hollow; 
adcentrally may be added a single transverse ridge, which in small specimens may 
alone be present; acentrally in large specimens may be added another pair at an 
angle of 60°; peripheral crenellae 3 to 7 in a petal, according to size, regularly 
arranged, and differing but little in length, short, stout, clear-cut, and distinct. Epizygal: 
markedly quinquelobate, approaching stellate, with the interradial ribs of the side- 
face appearing as points to the star but not entering the joint-face; petal-floors 
smoothly and gently excavate, meeting in radial ridges; no perradial or adradial 
crenellae; peripheral crenellae short and low, but often distinct, number 7 or 8 in 
a petal. Hypozygal: surface almost smooth and plane, with very slight radial 
depressions, and the barest traces of crenellae. 
Cirrus-facet flush or slightly raised, in lower half of epizygal, reaching nearly 
to its lower margin; transversely elliptical; rim distinct; lumen central, sometimes 
with rim; fulcrum as two tubercles, above transverse diameter, sometimes elongated 
at an angle of 60° thereto and converging upwards. 
Material. — Stem-fragments of this species have been received in greater 
abundance than any other, whether it be that a colony was chanced upon or that 
it really is the commonest crinoid of the Veszprém district. Nearly all come from 
Cutting VI on the Veszprém-Jutas railway. Of these about 7855 specimens were 
labelled as from bed e 4, and eight of them as from bed e without distinguishing 
numeral. Four specimens were subsequently sent by Professor Laczk6é from Veszprém- 
Vamu, Csész Domb, and one from Veszprém, Giricses Domb, lower stratified limestone. 
