180 R. P. TOMES OX THE GREAT-OOLITE MADREPORARIA. 



In the size of the calices it corresponds more nearly with a 

 species from the Great Oolite of Brequereque, near Boulogne ; but 

 the latter differs wholly in having numerous thin and continuous 

 septal costse. Prom the C. tuberosa of Prof. Duncan it differs in its 

 much smaller calices and rudimentary second cycle of septa. 



It occurs and is common, though perhaps not abundant, in the 

 Pairford coral-bed. 



Genus Stylhsta, Lam. 

 Stylina solida, M.-Edw. and Haime, Brit. Poss. Cor. p. 105, tab. xxi. 

 fig. 3. 



Stijlophora solida, M'Cov, Ann. Mag. Nat. Hist. 2nd ser. vol. ii. 

 p. 339 (1848). 



A few small specimens of this species have been obtained from 

 the Pair ford coral-bed, and are in Mr. Slatter's collection. They 

 appear to be somewhat worn, but nevertheless show conclusivelythat 

 the calices in the figure given by MM. Milne-Edwards and Haime 

 of this species are, as stated by them, a great deal too prominent. 

 They are a little larger, too, than they are represented in the figure, 

 and have rather thicker septa ; otherwise they agree pretty exactly 

 with the description and figure of the above-mentioned celebrated 

 zoophytologists. 



Stylen-a conifera, M.-Edw. and Haime, Brit. Poss. Cor. p. 105, 

 tab. xxi. fig. 2. 

 I have procured this coral in a few instances from the quarry 

 near Burford, but do not think it is common there, as it is not 

 seen in the weathered surfaces of the rugged stones of which the 

 surrounding walls are built, and in which so many corals are 

 observable. 



Subfamily astr^zein^. 

 Genus Montlivaltia, Lamx. 

 It is rather remarkable that the genus Montlivaltia, which is 

 usually so rich in species in the Jurassic formation, should be so 

 poorly represented in the coral-fauna of the Great Oolite. MM. 

 Milne-Edwards and Haime, in their great work on the fossil corals of 

 this country, gave two species only. This very meagre list of Montli- 

 vcdtice was not extended by Prof. Duncan, in his Supplement to the 

 above work, by a single additional species of this genus, though 

 several well-marked compound corals were added. To the two 

 species (M . Smitlii and M. Waterhousei) made known by MM. Milne- 

 Edwards and Haime I can now, however, add three others. One 

 of these is the old and well-known M. caryopliyllata, the species on 

 which the genus was established by M. Lamouroux, and the remain- 

 ing two are new. 



Moxtltvaltia CARTOPHYLLATA, Lamx. Expos, method, des gen. des Pol. 

 p. 78, pi. lxxix. figs. 8, 9, and 10. Plate VII. fig. 11. 



Several specimens which I have examined differ from typical 



