EF. RB. Couper Reed—Coastal Features, Co. Waterford. 49 
34mm. at the distal border; from this median region a series of 
diverging radial marginal plates forms a double row around the 
dorsal region, both rows having a rounded external margin which runs 
somewhat parallel at first but gradually widens posteriorly from the 
anterior margin to the terminal central plate. The horizontal lines of 
separation between the plates is strongly marked, very straight, and 
parallel upon the dorsal region of the opisthosoma, but the vertical 
lines converge from the neck-segment to the seventh segment, which 
is narrowest and bears a smooth rounded tubercle upon its centre; 
corresponding to the anal ring upon the sternal aspect of the body. 
The surface of the opisthosoma i is finely granulated. The first segment 
is nearly twice the length of the second, which is narrowest ; the 
third, fourth, fifth, and sixth segments are nearly equal in length; the 
seventh i is more than twice the length of the preceding one, being even 
longer than the first segment ; the eighth in line is not probably 
a true segment, but a post- anal plate, and corresponds to the ‘telson’ 
or tail-plate of Zimulus and Hurypterus. 
_ Ido not propose to make a new species upon this very interesting 
little Arachnid, but prefer to refer it to Scudder’s species of Anthraco- 
martus trilobitus from the Carboniferous formation of F ayetteville, 
Arkansas, United States, with the description and figures of which 
it most closely agrees (see Scudder, Carb. Arachnida N, America, 
May, 1890, pp. 451-452, pl. xxxix, figs. 7-10: Mem. Boston Soc. Nat. 
Hist., vol. iv, No. 9, Sept., 1890, Boston, U.S.). 
V1I.—WNorrs on some Coasrat Fraturres 1n Co. WATERFORD. 
Tit. Tramore Bay to Dunmore Kast. 
By F. R. Cowrrr Reep, M.A., F.G.S. 
HE projecting mass of land between Tramore Bay and the mouth 
of the River Suir consists of Old Red Sandstone, and the cliffs 
are mostly high, bold, and precipitous. The valleys which descend to 
the sea are more or less filled with Boulder-clay and other drift 
materials, testifying to their pre-Glacial excavation. The geological 
history of these valleys and of the large shallow lagoon lying inside the 
long spit of sand dunes which nearly cuts off the head of Tramore Bay 
deserves a separate article, and we will therefore here commence with 
the description of the eastern shore’ of this bay stretching from 
Summerville to Brownstown Head. Messrs. Wright & Muff! in their 
paper on the pre-Glacial shore-line of the South of Ireland made no 
reference to this portion of the Waterford coast. 
The cliff below Summerville House is composed of the usual type 
of Boulder-clay of the district, but devoid of any large boulders; it is 
capped by 4—8 inches of whitish to yellow marl without any stones ; 
above this comes 1-2 feet of wind-blown sand immediately beneath 
the thin soil. The Boulder-clay here is only about 6 feet thick, and 
the total height of the cliffs is only 8-12 feet. The line of these 
1 Scient. Proc. Roy. Dublin Soc., vol, x, pt. 2 (1904), pp. 250-324, 
