518 B. N. PEACH ON FURTHER RESEARCHES AMONG THE 
ing wrinkled skin, are seen to converge towards the centre of the head shield. 
The posterior edges of the plates are seen to underlie the anterior edge of the 
succeeding ones—that is, to overlap them. These are doubtless the coxe of 
limbs, portions of which are still attached to their broader ends. The inner or 
narrower ends are broken off, so that it is impossible to see whether they were 
used as gnathites. The foremost coxa preserved bears a limb, which is unfor- 
tunately in a bad state of preservation. The portion left is 4 cm. long, by 
6 mm. broad, and has extended beyond the limit of the stone. It lies bent 
back at nearly right angles to the coxa, and is again bent forward upon itself 
so that it must have had several joints, though it is not sufficiently well preserved 
to make out its component parts. It is covered over with a thick coating of 
spines and bristles, some of which are curled up, and others are detached and 
lying loose in the matrix. It is unfortunate that the extremity is broken off. 
The coxopodite of another limb studded with bristles is also preserved, and this 
too is bent back, so as to lie alongside the body. No swimming foot observed. | 
Body Segments.—The dorsal portion of the body segments increase in depth 
as they decrease in width, for while the first is only 5 mm. the seventh is a 
little over 7 mm. in depth. The exposed portion of the segments of the 
specimen vary considerably, as the body rings have been telescoped irregularly 
into one another. They are all ornamented in a similar manner to that 
described as occurring on the carapace. The scale-like ornament is smaller 
near the anterior margin, and increases both in convexity and size towards the 
posterior margin of each segment. The depth of the fringe of scollops on each 
segment also increases backwards. On the fifth dorsal plate a symmetrical 
pattern is produced by the scale-like ornament becoming very much elongated 
and diverging from a central line, thus allowing of the middle line of the back 
being easily made out, which can only be seen from the depth of the scolloping 
on the segments anterior to this one. The lateral margin of the hinder 
segments have the same V-shaped markings as the flange of the carapace. 
The ventral aspect of the abdominal plates, corresponding to the dorsal ones 
described, is seen along a narrow stripe a little to the right of the middle line 
of the animal. These are all seen to be firmly attached to each other by folded 
skin, and they bear a similar ornament to that exhibited by the dorsum. 
Locality.—River Esk, 4 miles south of Langholm. 
Horizon.—Calciferous Sandstone Series. 
Glyptoscorpius Caledonicus, Salter, Pl. X XIX. figs. 17-182. 
Cycadites Caledonicus, Salter, Mem. Geolog. Survey (Geology of Eastern 
Berwickshire, p. 58), figured in Memoir of Geological Survey, 38, 
Scotland (Geology of East Lothian, p. 72), fig. 22. 
About the year 1860, the late RicHarp Gress, fossil collector to the Geolo- 
