CORALS FROM THE INFERIOR OOLFfE. 131 



3. MoNTLiVALTiA Stutchburyi. Tab. XXVII, figs. 3, 3«, and 5. 



CoraJhm turbinate, ratlier tall, subpcdicellatc, straight, or slightly bent. Ejnfhcca very 

 thick, reaching almost to the calicular margin, and presenting very strong transverse 

 wrinkles or folds. CaJ'ice circular. Columella rudimentary. Septa rather thick, straight, 

 of unequal size, and forming four complete cycla. Height of one of the specimens here 

 described, one inch ; the other, although broken at both ends, is larger, and was probably 

 nearly two inches long. Diameter of its calice, twelve lines. 



These fossils belong to the Bristol Museum, and are entered in the catalogue of that 

 establishment as having been found at Nunney, near Frome. 



In most species of this genus the septa are much more numerous than in this species. 

 In M. detrita} and M. inaqualis,^ which have also only four cycla, the basis of the corallum 

 is broadly adherent, and the septa are very thick: in M. striatulata^ the basis is also 

 widely adherent, and the septa are very thin : M. sycodes^ resembles it most, but its epitheca 

 does not extend so high up, and the septal systems are unequally developed. In two other 

 species M. leni and M. depressa,^ where the fifth cyclum exists, the septa belonging to it 

 are sometimes rudimentary ; but the discoidal form of these corals distinguishes them at 

 first sight from M. Stutchburyi. 



4. MoNTLivALTiA Wrighti. Tab. XXVI, figs. 12, \2a. 



The unique specimen of this species is in a very bad state of preservation, and has 

 completely lost its epitheca, but is remarkable by its general form ; it is regularly turbinate, 

 and almost twice as broad as it is high. Calice almost circular ; fossula appearing to be 

 somewhat oblong. Se2)ta about seventy in number, well developed, but unequal in size 

 alternately; straight and thick, especially towards the wall; no appearance of any rudi- 

 mentary septa between the large preceding ones. Height of the corallum one inch ; 

 diameter of the calice two inches. 



We found this fossil in the Inferior Oolite at Crickley, near Cheltenham ; and have 

 placed it in the collection of the Paris Museum. We dedicate the species to Dr. Wright, 

 of Cheltenham, who has kindly communicated to us some interesting fossils from that 

 locahty. 



M. Wrigldi differs from most Montlivaltia by its general form ; it much resembles 



' Anthophyllum detritum, Michelin, Iconogr., tab. x, fig. 1. 

 2 AnthoplujUvm inc^qnale, Michelin, Iconogr., tab. 1, fig. 4. 

 2 Carijophyllia striatiilata, Michelin, Iconogr., tab. 1, fig. 9. 

 * Milne Edwards and J. Haime, op. cit., vol. x, p. 299. 

 ^ Tab. xxvi, fig. 7. '^ Tab. xxix, fig. 9. 



