Ill 
Aslrca hasaWforniis, W. B. Conybearo and W. Phillips, 1822, Outline Geol. England and 
Wales, p. 359. 
Lithostrotion siriatlim, Elemiug, 1828, Brit. Anim., p. 503. 
,, has alt if or me, Milne Edwards and J. Haime, 1852, Brit. Foss. Corals, p. 190, 
pi. 38, fig. 3. 
„ „ Idem., 18G0, Hist. Nat. Coralliaires, III, p. 429. 
Corallum astvaeiform, with prismatic corallites of five or six sides 
completely united by tlieir walls. The calices are unequal, and their diagonal 
varies from ten to fifteen millimetres. The columella is small and compressed, 
hut slightly swollen in the middle ; the septa, numbering from forty to sixty, 
are thin, and alternately a little unequal, only the larger ones reaching the 
columella. The interseptal loculi are full of innumerable dissepiments. The 
external surface of each corallite is ornamented with longitudinal costse and 
faint transverse lines of growth. 
Dimensions. — This corallum can attain large dimensions, its diameter 
sometimes exceeding several decimetres. 
Formation and Localities. — species has been found in England, 
Ireland, and Prussia, in the middle beds of the Carboniferous Limestone. Mr. 
W. P. Clarke sent me some specimens of it from a very hard bluish lime- 
stone, found on the banks of the Murrumbidgee.^ 
Lewz/s— CYATHOPHYLLUM, Goldfuss. 
Cyathopeyllum inveesum, L. Q. de Koninch. 
PI. V, Fig. 4. 
Corallum simple, cone-shaped, of moderate size, slightly curved ; the 
epitheca seems to have been very thin, and the rings of growth well marked. 
The calice is circular, moderately deep, and thickened at the brim. There 
are forty-two thin primary septa, slightly arched in the greater part of their 
length, and distinctly twisted in the centre of the calice. An equal number 
of secondary septa, only one-third as long, alternate with the primary septa, 
to which they are united by convex lamellae, the convexity of which is turned 
to the external margin, while the vesicles filling the interseptal loculi 
between the extreme edges of the secondary septa and the centre of the coral 
have their convexity turned to the centre of the coral. I could find no fossula. 
[There are no Carboniferous beds on the Murrumbidgee, vide E. Etheridge, junr., Mem. Geol. Survey 
X. S. Wales, Pal. V, Pt. ] , 189 ! , p. 6.— W.S.D.] 
