414 REPORT—1890. 
The fine clay is well seen, not only here but in numerous places in 
this area. It is, however, nowhere rich in fossils; with few exceptions 
single examples are the rule. Some of the bivalves, more especially the 
Ledas, are in pairs,‘and preserve their epidermis ; and from the condition 
of these, and such other species as I have seen or obtained from Bally- 
rudder, Woodburn Glen, and about Belfast, I believe the shells to be in 
their original place, and not removed from elsewhere, and that neither 
the gravels, fine clay, nor the unstratified clay above, come under the term 
boulder clay, in the sense of the Scottish till, but to be the production, in 
its earlier stages, of ordinary marine action, and in its later of water-borne 
bergs and ice floes. 
About fifty species have been recorded, chiefly obtained by Messrs. 
Bryce and Hyndman, and Stewart, and from an examination of their col- 
lections in the Belfast Museum, and the fact that the percentage of exotic 
species is only about 11 per cent., I am of opinion that the association of 
the clay at Ballyrudder with the underneath gravels is simply incidental, 
the two deposits having only a stratigraphical relation to each other. 
Fossils of the Boulder Clays. 
Aporrhais pes pelecani. Astarte triangularis. 
Buccinum undatum. Cardium echinatum. 
Cyprzea europea. * edule. 
Emarginula fissura. a4 nodosum, 
Fusus antiquus. Leda minuta. 
» contrarius. »  pernula. 
» gracilis. * ., pygmea. 
Lacuna pallidula. Lucina borealis. 
Littorina littorea. Mactra elliptica. 
Murex erinaceus. »  subtruncata. 
Nassa pygmea. » truncata. 
, reticulata. Mya truncata. 
*Natica affinis. Mytilus edulis. 
Purpura lapillus. Nucula nucleus. 
Trochus tumidus. Ostrea edulis. 
*Trophon clathratus. Pecten maximus. 
Zs 5 Gunneri. Pectunculus glycimeris. 
ty latericeus. Pholas crispata. 
“ truncatus. Saxicava rugosa. 
Turritella terebra. Scrobicularia piperata. 
Anomia ephippium. Tapes aureus. 
Arca lactea. » decussatus. 
5, pectunculoides. Tellina balthica. 
*Astarte borealis. + calearea: 
» compressa. Venus gallina. 
5 elliptica. >» ovata. 
sulcata. 
9 
The ‘Turbot Bank,’ Co. Antrim. 
This interesting deposit consists of a great submarine bank of sand 
and gravel extending at a depth of 25-30 fathoms from opposite Island 
Magee southwards across the entrance of Belfast Bay, the water outside 
deepening rapidly till, at Larne, bottom is touched at 112 fathoms, and 
opposite Belfast Lough, between it and Galloway, at 149 fathoms. It is 
still a matter of uncertainty as to whether the organic remains obtained 
by Messrs. Hyndman, Warren, and others, in the course of the dredging 
