296 BRITISH FOSSIL CORALS. 
they jo those of the surrounding corallites. Calicular fossula rather shallow ; in all the 
specimens we have seen it was much clogged up with extraneous matter, but there was 
still some appearance of a styliform, slightly compressed columella, and of a crucial mode 
of arrangement of the principal septa. Septa (24 or 26,) well developed, rather thick, of 
unequal size alternately, and slightly exsert. Diameter of the calice about 1 line. 
The British specimens examined by us were found in the upper Silurian rocks at 
Dudley, and in the inferior Silurian deposits at Coniston. Professor M‘Coy 
mentions its existence at Coniston Water Head, Lancashire; Sunny Brow near 
Coniston; High Haume, Dalton in Furness, Lancashire ; Long Steddale, Westmore- 
land; Applethwaite Common, Westmoreland. It is also found in Gothland, in 
Groningue, and in Russia. 
Specimens are in the Collections of the Paris Museum, Bristol Museum, of the 
Geological Society of London, and M. de Verneuil. 
Professor M‘Coy thinks that the name of Sarcinula ought to be applied to this genus, 
because Lamarck considered the recent coral for which he established it as being identical 
with the Madrepora Organum of Linné; but we cannot adopt his opinion. For when 
Lamarck formed his genus Sarcinula he had evidently in view the above-mentioned recent 
coral, to which alone its characters are applicable, and the blunder he made consists only 
in the misapplication of the Linnean name. ‘This specimen, -which still exists in the 
public collection of the Parisian Museum, and has been figured in a recent work', must 
therefore receive a new specific name, but its generic name cannot be transferred to a fossil 
that differs essentially from it, and that Lamarck had never an opportunity of examining. 
10. Genus Lonspauzta (p. Ixxi’). 
LoNSDALEIA WENLOCKENSIS. 
STROMBODES WENLOCKENSTS, M‘Coy, Ann. and Mag. of Nat. Hist., 2d ser., vol. vi, p. 274, 
1850. 
— — M‘Coy, Brit. Paleeoz. Foss., p. 34, pl. iB, fig. 28, 1851. 
“ Corallum forming large, irregular masses of polygonal stems, the mouth of which vary 
usually from 8 to 10 lines in diameter; boundary walls strong, prominent, vertically 
sulcated on the inside; stars depressed round the margin of the walls, forming a large 
circular convexity nearer the centre, within which is a concavity from which rises the thick 
prominent compound axis; radiating lamellae 24 in small specimens, 30 in large ones, 
strongest and most prominent in the circular convexity of the star, where an equal number 
of small alternate ones disappear ; a vertical section shows the thick central axis composed of 
1 Milne Edwards, in Régne Anim. de Cuvier, Zooph., pl. 85, fig. 1. 
2 Under the name of Lithostrotium. 
