CORALS FROM THE SILURIAN FORMATION. 275 
parts of the same specimen, and sometimes also in different specimens, we have observed 
the intermediate form between this state and the fasciculated structure peculiar to 
Syringopora. 
3. SYRINGOPORA SERPENS. ‘Tab. LXV, figs. 2, 2a. 
Maprepora TUBULIS, &c., Fougt, Ameen. Acad., vol. i, p. 105, tab. iv, figs. 22, 26, 1749. 
TUBIPORA SERPENS, Linné, Syst. Nat., edit. 12, p. 1271, 1767. 
— — Othon Fabricius, Fauna Groenl., p. 428, 1788. 
CATENIPORA AXILLARIs, Lamarck, Hist. des Anim. sans Vert., vol. ii, p. 207, 1816; 2d 
edit., p. 322. 
— — Lamouroux, Exp. Meth., p. 66, 1821. 
TUBIPORITES SERPENS, Kriiger, Gesch. der Urw., p. 263, 1823. 
CATENIPORA AXILLARIS, Lamouroux, Encycl. (Zooph.), p. 177, 1824. 
AULOPORA CONGLOMERATA, Lonsdale, in Murchison, Silur. Syst., p. 675, pl. xv, fig. 3, 
1839. (Not Goldfuss.) 
— Lonspatnt, D’ Orbigny, Prodr. de Paléont., vol. i, p. 51, 1850. 
SyrINGoporA sERPENS, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzoz., 
p. 294, 1851. 
Young specimens of this coral equally resemble Aulopora; by the progress of age and 
the multiplication of individuals, the corallites become very tall and closely set. Hpitheca 
strong. Mails thick. 18 septal strie. Connecting tubes few in number. Diameter of 
_ the corallite somewhat more than half a line. 
Dudley and Benthall Edge. Gothland. 
Specimens are in the Collections of Mr. Fletcher, of the Museum of Paris, &c. 
This species differs from the preceding ones by the large size of its corallites, the 
irregular way in which they are set, and the extreme rarity of the connecting tubes. 
Syringopora Lonsdaleana, which Professor M‘Coy found in the Silurian beds of 
Portrane and Mahahide, county of Dublin, is evidently distinct from the three Silurian 
species here described, but is so imperfectly known that it appears difficult to characterise 
it. The corallites are large, straight, and irregularly placed. ‘The connecting tubes are 
large, and appear to be very short. 
Syringopora cespitosa, Lonsdale, in Murchison, Silur. Syst., pl. xv bis, fig. 13 (not 
Goldfuss) ; Harmodites Lonsdalei, D’Orbigny, Prodr. de Paléont., vol. i, p. 50; is a 
coral from Wenlock, which is entirely unknown to us, and seems not to belong to the 
genus Syringopora. 
1 MCoy, Syn. of Sil. Foss. of Irel., p. 65, pl. iv, fig. 20, 1846. 
