60 BRITISH FOSSIL CORALS. 
Family FUNGID (p. xly). 
Genus MicRABActa (p. xlvu). 
MicrapBacta coronuLa. ‘Tab. X, fig. 4, 4a, 46, 4c. 
Cyciouites, W. Smith, Strata identified by Organic Fossils, p. 12; Greensand, p. 15, 1816. 
Funara coronuna, Goldfuss, Petref. Germ., vol. i, p- 50, tab. xiv, fig. 10, 1826. 
== — FA. Remer, Die Verstein. des Norddeutschen Kreidegebirges, p. 25, 1840. 
— — Morris, Cat. of Brit. Fossils, p. 38, 1843. 
Funera cLarurata (?) Geinitz, Grundriss der Versteinerungskunde, tab. xxiii, fig. 2, 1849. 
Corallum simple, lenticular, short ; its under surface horizontal or slightly concave ; its 
upper surface somewhat convex. Mural disc completely naked and regularly perforated 
by small intercostal pores. Coste closely set, almost straight, equally narrow, not pro- 
minent, and but slightly echinulated ; only twelve of them arise in the centre of the disc, 
but these soon bifureate, and the twenty-four costz so formed soon divide again ; at about 
half the distance from the centre to the circumference of the disc each costa bifurcates once 
more, and the two terminal costae so formed are grouped two by two towards the periphery 
of the disc, The granulations which form all these costs are not very distinct, and are 
arranged in single lines. Caliculur fossula small and not very deep, but well marked and 
rather elongated laterally. Co/wmella very small, oblong, and subpapillose. Septa forming 
five complete cycla, and corresponding to the intercostal spaces ; those of the last eyclum 
quite rudimentary; the others tall, thin, straight, and united by sub-spiniform trabicule. 
Those of the first cyclum larger than the others, and augmenting slightly in thickness 
towards the middle; the secondary ones almost as large; all delicately denticulated along 
their upper edge, and much thinner towards their outer and inferior angle than in any 
other part. Diameter, three or sometimes four lines ; height, one line and a half. 
The above-described fossils were found in the Greensand at Warminster, in Wiltshire, 
and according to William Smith, who was the first author that mentions this fossil, 
are also met with at Chute Farm and Puddle Hill, near Dunstable. 
By an attentive comparison with the specimens described by Goldfuss, and belonging 
to the Poppelsdorff Museum at Bonn, we have ascertained the specific identity of this 
British Coral with the Fwxgia coronula found in the chalk of Essen. Specimens exist in 
Mr. Bowerbank’s cabinet, and in the collections belonging to the Geological Society, 
the Museum of Paris, the Museum of Bonn, and M. Defrance at Sceaux, who has 
designated it by the unpublished name of Fungia dubia. 
