24 Tate — List of Irish Liassic 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 Montivaltice 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-loths inch ; width of the calice, 9-loths 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 

 papillae, 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-loths 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 costae are seen through it faintly. The calice is nearly 

 circular. The septa are exsert, and the larger have very large dentations or 

 papillae 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 — io-i2ths inch ; height of corallum, 2-ioths inch. 



Locality — West 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 Frotnenteli, Terq. & Piette, as in the Irish locality. 



JttA^.llfl 11 FEB 1886 



