CORALS FROM THE MOUNTAIN LIMESTONE, 175 
narrow, equally developed, and alternating with an equal number of smaller ones. Zudule 
very large, and to a great extent smooth. Height of the corallum about 3 inches or more ; 
diameter of the tabule ? of an inch. 
Professor M‘Coy mentions having met with this species at Corwen.’ All the specimens 
that we have examined were from Tournay, in Belgium. 
A. cornu-bovis differs from a 4. Henslowi” by its elongate cylindrical form; from 
A. spinosus® by the absence of mural spines, from 4. xodulosus* and A. annulosus’ by the 
form of the circular accretion swellings of the wall, which do not constitute acute ridges ; 
and from 4. Yandelli,’ which it resembles the most, by its septa being more numerous and 
its general form less irregular. 
3. AMPLEXUS NODULOSUs. 
AMPLEXUS NoDULosvs, Phillips, Paleeoz. Foss., p. 8, 1841. 
—  sERPULOIDES, De Koninck, Anim. Foss. des Terr. Carb. de Belg., p. 28, pl. 8, 
figs. 7, 8, 1842. 
—  Noputosus, M‘Coy, Syn. Carb. Foss. of Ireland, p. 185, 1844. 
—  seERpuLorpEs, Michelin, Icon., p. 257, pl. lix, fig. 7, 1846. 
— nopuLosus, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleoz., 
p. 345, 1851. 
Corallum very long, sub-cylindrical, slightly flexuous, covered with a well characterised 
epitheca, and presenting, at the distance of about one line and a half apart, a series of 
circular prominent sharp ridges. Sepéa quite marginal; about thirty. Height of the 
largest fragments about 3 inches ; diameter 3 lines 
Professor Phillips discovered this fossil in England, but does not mention the locality 
in which it was found. Professor M‘Coy mentions its existence in Ireland. The specimens 
which we have seen are from Visé, in Belgium. 
This species is remarkable for the prominent circular ridges of its wall; the same 
character is observable in 4. annulatus,’ but in this latter Coral the mural ridges are not so 
closely set and a constriction exists above each of them. 
1 Ann. and Mag. of Nat. Hist., 2d series, vol. iii, p. 133. 
2 See tab. xxxiv, fig. 5. 
2 De Koninck, Ann. Foss. des Terr. Carb. de Belgique, tab. c, fig. 1. 
* Phillips, Paleeoz. Fossils, p. 8; dmplecus serpuloides, De Koninck, op. cit., tab. B, figs. 7, 8. 
5 De Verneuil and J. Haime, in Bull. de la Soc. Géol. de France, s. 2, vol. vii, p- 151; Milne Edwards 
and Jules Haime, Pol. Foss. des Terr. Paleeoz., p. 345. 
6 Milne Edwards and Jules Haime, op. cit., tab. iii, fig. 2. 
7 De Verneuil and J. Haime, in Bullet. de la Soc. Géol. de France, s. 2, vol. vil, p. 151; Milne 
Edwards and Jules Haime, Polyp. des Terr. Paleoz., p. 345. 
