120 BRITISH FOSSIL CORALS. 
This species was found in the Great Oolite at Hampton cliffs, by M. Walton. It is 
easily distinguished from the other species belonging to the same genus by the delicacy 
and the great number of its septa relatively to the small size of its calices. 
4, ToamnastrEaA Wattont, Tab. XXIX, figs. 4, 4a. 
Corallum arborescent. Calices closely set, somewhat unequal. Valls subpolygonal, 
and becoming apparent when the upper surface of the corallites has been worn away. 
From twenty to twenty-four septa, varying a little in breadth and size alternately, but 
almost all of the same thickness; in general strongly bent, and very thick where they 
pass from one corallite to another, but thin towards the fossula; their upper edge appears 
to be almost entire, and their lateral surfaces but feebly granulated. Fossula well cha- 
racterised. Colwmella tubercular. Diameter of the calices two-thirds of a line. 
We have seen only a small cylindrical fragment of this fossil that was found by 
Mr. Walton in the Great Oolite, near Bath. It is very nearly allied to 7. Cadomensis,' 
but appears to differ from that species by the smallness of its calices, and by its septa 
being thicker and less numerous. The same characters distinguish it from 7. Lyelli, 
T. affinis, and 7. dendroidea,* to which it resembles by general form of the corallum. 
Prof. M‘Coy’ refers to the AstrEA Graciiis of Goldfuss,° a cast of which was found 
at Minchinhampton, and belongs to the Cambridge Museum. There is also in Mr. 
Bowerbank’s collection a specimen of the same kind, from the environs of Bath. These 
corals all belong to the genus Zhamnastrea, but the specimens that we have seen are not 
in a sufficiently good state of preservation to enable us to characterise them specifically. 
Family FUNGID A, (p. xlv.) 
Genus ANABACTA, (p. xlvil.) 
ANABACIA oRBULITES, Tab. XXIX, figs. 3, 3a, 34, 3c, 3d, 3e. 
Burton stonz, R. Plot, Nat. Hist. of Oxfordshire, p. 139, tab. viii, fig. 9, 1676. 
Porpits, Knorr and Walch, Rec. des Monum. des Catastr., v. ii, p. 23, tab. F 3, figs. 6, 7, 1775. 
Maprepora porPites, W. Smith, Strata identif. by Org. Fossils, p. 30, Upper Oolite, 
fig. 4, 1816. 
1 Michelin, Icon. Zooph., tab. liv, fig. 14. 
2 Tab. xxi, fig. 4. 
3 Milne Edwards and Jules Haime, Ann. Se. Nat., s. iii, vol. xi, p. 198. 
4 Astrea dendroidea, Lesauvage, loc. cit., pl. xxvii, fig. 6. 
5 Ann. of Nat. Hist., s. ii, vol. ii, p. 418. 
8 Petref. Germ., y. i, tab. xxxvill, fig. 13. 
