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extremity bluntly pointed. Ambulacral furrow very broad; tubefeet 
very large, bluntly pointed, apparently pluriseriate, but, as seen on 
a doser inspection, in reality in the normal two regular rows. 
Paxillæ on the disk very crowded, not regularly arranged. 
Along the arms they are arranged in regular longitudinal series, 
5 series along each side, on the proximal part of arms 6 series; 
on the middorsal area of arms the paxillæ are arranged without 
any order, or, at most, in indistinct longitudinal series; on the 
distalmost part of arms this area widens so as to occupy nearly 
the whole dorsal side, only the two lowermost longitudinal series 
of paxillæ remaining distinet until the end of the arm. The lateral 
paxillæ are quadrate, those of the middorsal area more or less irre- 
gularly rounded. The supramarginal paxillæ correspond in width 
each to an inferomarginal plate, and are of the same size as the 
lateral paxillæ; those of the middorsal area are of variable size, 
some of them being about as large as the lateral ones, while others 
are distinetly smaller. 
Each paxilla generally carries in the middle 6—7 coarse, smooth 
grainlike spinelets arranged in a circle round a central one which 
may be slightly larger; the edge is bordered by ca. 20 more siender, 
slightly elongated spinelets (Fig. 4.d. left figure). One arm alone 
differs conspieuously from the others in the central spinelet on all 
the paxillæ, except the superomarginal ones, in the proximal third 
of the arms being elongated, so as to form a small, blunt spine 
(Fig. 4.d; right figure). As there is otherwise, at most, the merest 
indication of a central spine on a few of the middorsal paxillæ in 
the proximal part of the arms, it seems probable that this arm 
belongs to a third specimen. — The inferomarginal plates (Fig. 4.a) 
bear along the median line (3) 4 — 5, in the proximal part of the 
arm sometimes even 6 erect, stout, compressed spines, slightly 
curved, tapering to a blunt point; the three uppermost are the 
largest, ca. 3 — 4 mm long, equalling in length 2—3 marginal plates. 
These spines, as a rule, form fairly regular longitudinal series, not 
alternating as in the following species. A variable number of smaller, 
compressed spines irregularly placed among the larger ones, and 
along the edge of the plate a series of siender spinelets; only 
along the upper part of the plate a close fringe of fasciolar spine¬ 
lets is found in the furrow, below the marginal spinelets. 
