MS) 
ENCRINURUS FALLAX, Reed, Quart. Jour. Geol. Soc, vol. 50, 1899, p. 
753, Plate XLIX, figs. 9-12. 
The author illustrates an entire specimen of a young individual; also 
the head and tail of an adult; from County Waterford, Ireland. 
The head shield broadly semi-circular, strongly convex. Glabella 
convex, subcylindrical, slightly broader in front than at the base; not 
inflated in front or overhanging the margin. ‘Three pair of short lateral 
furrows. Frontal lobe twice the length of the anterior pair of lobes; not 
overhanging them laterally; it is rounded in front, where it is encircled 
by a marginal furrow, which runs into the deep and strong axial furrow. 
A narrow tuberculated, almost horizontal border, is thus marked off from 
the anterior end of the glabella, as in EK. Seebachi, Schm. Fixed cheeks, 
convex; elevated genal angles, bent down. Eye lobe large and elevated. 
The facial suture curves backwards and outwards from the front of 
the glabella to the 2nd lateral furrow, where the eye is situated; from 
this point it bends slightly outwards, and running nearly parallel to the 
posterior margin in front of the genal angles. Surface ornamented with 
small tubercles. 
Thorax with 12 segments. Axis convex; each ring has a median, 
raised, rounded ridge, ornamented with tubercles; narrow, flat, articu- 
lating band on the anterior and posterior margins. A conspicuous nodule 
is seen on each side of the axis, as in Calymmene Blumenbachi. Pleurae 
with medium tuberculated ridge; free ends bluntly pointed. Pygidium 
with 12-15 axial joints; only the first 9 or 1o rings are entirely across 
the axis; sometimes only the first four. The axis ends in a bluntly 
pointed extremity. ‘The anterior joints have each four tubercles The rst 
pleurae, 3 tubercles; 2nd, two or three; 3rd, two, and the 4th and 5th, one 
ortwoeach. ‘The first pleurae are strong, without furrows, and curve 
regularly backwards; the 5th and 6th pair are weaker, and run nearly 
straight backwards. 
The author compares the species with /, sea-costa/us, Salt. It has 
not the overhanging glabella of that species; the lateral furrows of the 
glabella are different; cheeks are tuberculated, not pitted; number of 
axial joints in the pygidium is less; pleurae curve back more strongly, 
and ornamented with tubercles. Salter’s species has smooth pleurae. 
Remarks.—The facial sutures, the glabella, 12 thoracic segments, 
ridged pleurae, also the pygidium, all point to Cybele or a prototype of 
that genus. 
A similar species from Australia, described as /. Mitchelli, by 
Foerste, has the ridged pleurae and 12 thoracic segments; also the con- 
spicuous nodules on each side of the axis of the thorax, with a similar 
tail, but it has a greater number of axial joints (28) and pleurae (9-10). 
The cast now before me from Bowning does not indicate tubercles. 
