TRANSACTIONS OF SECTION GC. 463 
3. Note on the Fish-remains collected by Messrs. R. Campbell, W. T. 
Gordon, and B. N. Peach in Paleozoic Strata at Cowie, Stone- 
haven. By R. H. Traquair, M.D., LL.D., F.RS. 
The fish-remains from Cowie, Stonehaven, consist of :— 
1. Small scutes which are about three times as long as they are broad, slightly 
convex on one side and correspondingly concave on the other, and apparently 
pointed at both ends. They seem to me to be referable to the category of 
Cephalaspidian scutes, only the external ornament, where visible, consists of 
longitudinal and slightly wavy strie in place of tubercles. That the species 
to which they belong is as yet unnamed and undescribed is pretty certain; but 
the advent of additional material is necessary before proceeding further in that 
direction. 
2. Several fragments of thin minutely tuberculated plates, which may also 
be Cephalaspidian, though their nature, indeed, is still problematical. 
3. Several specimens of a beautiful C'yathaspis, which I herewith dedicate 
to Dr. R. Campbell, and of which I give a brief diagnosis. 
Cyathaspis Campbelli (Traquair).—Shield, ovoid, concave, shallow, broadest 
part situated behind the point of greatest expanse; covered with stout ridges 
running in a longitudinal direction, but also tending to converge a little 
anteriorly and posteriorly. These ridges are also constantly interrupted, so 
as to give almost a tubercular appearance, the tubercles being comparatively 
distantly placed, much compressed, and crenulated. 
4. Discovery of Fossils in the Boundary Fault Series, near Aberfoyle. 
By T. J. Jenu, M.A., M.D. 
This Series is well exposed between Loch Lomond and Callander, forming a 
narrow belt separated by a reversed fault from the Lower Old Red Sandstone on 
the 8.E., and probably by a line of thrust from the Leny Grits on the N.W. It 
consists of black and grey shales, cherts, grits, and calcareous beds, with which 
are associated some altered igneous rocks. Adjoining the crushed and veined 
rock which runs along the boundary of the Lower Old Red Sandstone patches of 
sheared serpentine are seen at several places, sometimes associated with a coarse 
basic igneous rock somewhat brecciated, as at Maol Ruadh. These probably 
represent igneous intrusions. Near Loch Lomond grits only are exposed. At the 
N.E. end, near Callander, the belt consists largely of grits, but at Kilmahog 
quarry there is a good exposure of black shales with an interbedded limestone 
identical in character with the limestone in the Margie Series described by Mr. 
G. Barrow (‘Q.J.G.8.,’ 1901). 
The belt in the Aberfoyle area emerges from under the Upper Old Red 
Sandstone north of Gualann and extends north-eastwards to a mile N.E. of 
Aberfoyle. Widest near Gualann—about half a mile. General strike of beds 
N.E. and 8.W.; general dip N.W., at high angles. Beds often isoclinally 
folded along crush-planes striking N.E. and §.W. Apparent order of succession 
from below upwards near Kelty Water: (1) Hornblendie and chloritic schists, 
probably representing intrusive sheets; (2) Thin band of chert and black shale, 
only traceable for about a mile; (3) Band of grit which as traced to N.E. comes 
to abut against Lower Old Red crush rock; (4) Thicker band of black shales and 
cherts; (5) Grit.—The Leny Grit follows on the N.W., but at other places it 
appears to come directly on the black shales and cherts. 
Difficulty in distinguishing the grits of the Boundary Fault Series from the 
Leny Grits. The latter are generally greenish, the former greyish and weathering 
yellowish-brown and are peculiar in containing fragments of black shale, chert, 
and vesicular volcanic matter. Lumps and courses of a very dark grit also occur 
in the black shales. The shales are usually black, carbonaceous, staining the 
fingers ; generally very crushed. The cherts are pale grey to dark in colour, often 
finely banded with frequent interleaves of black shale. Joints and veins at 
right angles to the bedding often numerous. Thin cherty bands and nodules often 
