106 BRITISH FOSSIL CORALS. 
Corallum massive, subspheroidal. Calices rather distant, not remarkably prominent, 
somewhat unequal in size, and very open. Columella strong and slightly compressed. 
Septa forming three complete cycla, unequally developed, straight and thin. Diameter of 
the calices one line, or one line and a half. 
The specimen which Mr. M‘Coy described, and which we have seen in the Cambridge 
Museum, was found in the Inferior Oolite at Dundry. M. D’Orbigny has shown us some 
other fossils which belong to the same species, and were met with in the corresponding 
strata at Morey, Departement de la Haute Saone. Mr. Terquem has also found it in the 
Inferior Oolite, near Metz; but the cast which we have figured here, and which does not ap- 
pear to differ specifically from the above-mentioned specimens, was found by Mr. Bowerbank 
in the Great Oolite, near Bath. It is therefore probable that this species exists in 
both these formations, which are considered as distinct by some authors, but are placed 
in the same group of strata by our celebrated friend, M. Elie de Beaumont, under the 
general denomination of Lower Oolite. 
Stylina solida resembles 8. conifera, S. echinulata, S. Deluci, and 8S. limbata,* in 
having six simple equally developed septal systems, and three cycla of the costo-septal 
radii. It differs from §. /imbata by its massive and almost spherical form; and from 
S. conifera, by its less prominent calices and small tertiary septa. It bears great 
resemblance to S. echinulata and S. Deluci; but in the first of these, the columella is 
perfectly cylindrical, and the primary septa more delicate; and in the latter the calices 
are more crowded, and have thinner margins; the septa are rather thicker, and the 
columella is larger. 
We consider it necessary to add that, in our figure, 3 4, the artist has represented the 
calices as being much more prominent than they really are, and we regret not having 
been able to correct that error. 
3. Sryzina Proti, Tab. XXIII, fig. 1. 
Astrortes (?) Robert Plot, Nat. Hist. of Oxfordshire, tab. viii, fig. 2, 1676. 
Corallum massive, convex, and somewhat gibbose. Ca/ices rather closely set, unequal 
in size, projecting but little, and widely open. Co/wmel/a small. Septal systems unequally 
developed ; ten principal septa of equal size, thin, straight, reaching to the columella, and 
alternating with an equal number of very small ones, Diameter of the large calices, two 
thirds of a line. 
The specimens of this species which we have examined were all much weather-worn, 
1 Tab. xxi, fig. 2. 2 Lamarck, Hist. des Anim. sans Vert., vol. ii, p, 221. 
8 Astrea Deluci, Defrance, Dict. Se. Nat., vol. xlu, p. 386. 
4 Astrea limbata, Goldfuss, Petref. Germ., t.i, pl. viii, fig. 7, and pl. xxxviii, fig. 7. 
