424 REPORT—1890. 
In presenting this, the final report, on the Wexford gravels, &c., I 
have to acknowledge with pleasure the generous help rendered me b 
many friends, more especially to Mr. S. A. Stewart, of Belfast, for 
specimens, material, and kindly help in many ways, as well as to the 
geological members of the Belfast Naturalists’ Field Club generally. To 
Messrs. Gray and Symes I owe my greatest knowledge of the Portrush 
deposit, and to Professor V. Ball, Dublin, and E. F. Newton, Esq., F.G.S. 
(Mus. Prac. Geol. London), facilities in examining Captain James’s 
original collection of Wexford fossils. Amongst those no longer with us, 
I owe much to Messrs. Edward Waller, W. Hellier Baily, W. W. Walpole, 
and Dr. Gwyn Jeffreys for specimens and information. 
In conclusion, I may venture to say that I have seen and examined all 
the localities referred to, and verified a large number of the species 
quoted, even if I have not collected them myself. The virtual extinction 
of many fossiliferous deposits, as at Ballybrack, Balbriggan, and Portrush, 
by walling up or road making, is to be deplored. Other localities in the 
north, I am glad to say, are being worked by R. Lloyd Preger, B.A., and 
the results will appear in due conrse in the reports of the Belfast Field 
Club, in which much valuable information concerning the deposits of 
N.-E. Ireland may be studied with great advantage. 
Eighth Report of the Committee, consisting of Mr. R. ETHERIDGE, 
Dr. H. WoopwarD, and Professor T, Rupert Jones (Secretary), 
on the Fossil Phyllopoda of the Paleozoic Rocks. 
§ 1. Saezocaris. § 2. Aristozoe. § 3. Estheric. 
§ 1. Saccocaris minor, J. § W.—On a large piece of the ‘Upper Shale 
(=Daearfawr Shale), west of the Crag known as Craig yr hyddod, 
Arenig,’ North Wales, kindly submitted by Professor T. McKenny 
Hughes, F.R.S., for examination, are numerous, and at first sight 
somewhat obscure, impressions of a Bivalved Phyllocarid ; together with 
some body-segments of the same. The rock is ‘the top bed of shale 
tangled among the porphyries of the Mountain Arenig. It is there- 
fore the highest fossiliferous zone of the Arenig of Arenig.’ The 
slab, measuring 18 by 10 inches and half-an-inch thick, consists of a 
hard, dark-coloured, fine-grained flagstone (dark-blue within and 
weathering dull rusty grey), not argillaceous nor calcareous, made up of 
minute, fragmentary, crystalline particles. One edge is straight and 
ragged, and the opposite edge is rounded, as if it had been a part of a 
large fissile concretion. The slab separates horizontally into two parts, 
and the counterpart surfaces are covered with the fossil impressions, 
which are mainly convex on one of the faces, and concave on the other. 
One larger convex cast (fig. 1) lies almost alone on the rusty weathered 
back of the piece that bears the concave impressions. These carapaces 
and abdominal segments are merely dark films, more or less flattened, 
and squeezed across their length. Some, however, among the numerous 
individuals, are less distorted by pressure, especially one (fig. 1), which 
is isolated on a different (outer and broadly rippled) surface of the stone. 
The crowded fossils lie mostly oblique to the long axis of the stone, 
