24 
Tate— List of Irish Llassic Fossils. 
The following diagnoses of new species of Corals , type specimens of 
which were obtained from the Lower Lias in County Antrim , are 
extracted from Dr. Duncan! s Monograph of British Fossil Corals. 
Pal. Soc., Vol. xx., 1868. 
Oppelismilia, Duncan, loc. cit., p. 39. 
Corallum simple, attached and conical ; epitheca well-marked, and reaches 
to the calicular margin. Calice shallow, and the septa numerous and close. 
There are no costse, and there is no columella. Gemmation occurs within 
the calice; and the bud, which has an epitheca, grows with the parent. 
The genus includes MontivalticB with calicular gemmation. 
29. Oppelismiilia gemmans, Duncan , loc. cit., t. x, figs. 33-34, p. 39- 
Corallum short, with a broad and flat calice, an oval space at the base, where 
it was once adherent ; a strong epitheca with circular markings, and there are 
no costse. Calice flat and shallow, and its margin is sharp. The septa are 
very numerous and unequal. The bud on the calice has an epitheca, and its 
septa are faintly dentate. 
Height of the corallum, 5-ioths inch ; width of the calice, 9-ioths inch. 
Locality — Waterloo, Larne. {R- T.) 
30. Montlivaltia Hibernica, Duncan, loc. cit., t. x, figs. 22-23, p. 39. 
Corallum discoidal, base flat ; calice convex. Epitheca of the base strongly 
marked concentrically. Septa numerous, close, unequal, and marked by small 
papillse, which are very close together, and by flat eminences which are also very 
close together. There appear to be nearly five cycles of septa, and the largest 
septa are papillose. Diameter, 4-ioths inch ; height of corallum, i-ioths inch. 
Locality. — West shore of Island Magee. (R. T.) 
31. Montlivaltia papillata, Duncan, loc. cit., t. x., figs. 15-18, p. 36. 
Corallum cyclolitoid in shape, base slightly concave ; calice convex, with a 
circular depression in the centre. Epitheca of the base reaching to the cali- 
cular margin ; it is very thin, and marked with concentrical shallow depressions 
and elevations, and the costse are seen through it faintly. The calice is nearly 
circular. The septa are exsert, and the larger have very large dentations or 
papillse on them. There are 24 septa, which reach the margin of the columel- 
lary space, and they are strongly papillated. Between two of the longest 
septa there are three others, one, the central, is longer than the others, which 
are almost rudimentary ; all are papillate. 
Diameter— 1 o- 1 2ths inch ; height of corallum, 2-ioths inch. 
Locality — W est shore of Island Magee ( R.T '.) ; it occurs, also, at Marton 
near Gainsborough, on the same horizon ; associated with M. Haimei, Chap. 
& Dew., and Septastrcea Fromenteli, Terq. & Piette, as in the Irish locality. 
11 h£B 1886 
