132 BRITISH FOSSIL CORALS. 
M. Smnithi, but in this latter species the septa are more unequal, and the basis is broadly 
adherent; in all others the septa are either more numerous and thinner, or, on the 
contrary, less numerous and thicker, and in no other have we met with any large septa 
belonging to the fifth cyclum. 
5. Montiivantta cuputirormis. Tab. XXVII, figs. 1, la. 
Corallum tall, straight, adherent by a very large basis, above which it is slightly con- 
stricted, but soon becomes almost cylindrical. Zpitheca extending high up towards the 
calicular margin, but almost entirely worn away in the specimen here described. Cadlice 
circular ; central fossula very small, somewhat oblong. Sep/a rather thin, straight, and 
forming four well-developed cycla, and a rudimentary fifth cyclum; those of the second 
cyclum as large as the primary ones. Height of the corallum one inch and a half. 
Diameter of the calice one inch. 
This fossil, of which we have seen but one specimen, was found in the Inferior Oolite 
at Dundry, by Mr. Pratt. 
Most of the various species of J/ontlivaltia, which, like I. cupuliformis, are adherent 
by a broad basis, differ from it by their general form as well as by characters derived from 
the septa. Thus A/. Smithi' and MW. pateriformis? ave broader than high, and have thicker 
septa. I. detrita® and M. inequalis* ave entirely cylindrical, without any constriction 
near the basis, and have very thick septa. JZ. striatulata’ is a very small coral with very 
delicate septa; JZ. subtruncata’ has six cycla of septa; and JZ. Lesweuri’ seven cycla. IV. 
Goldfussiana® resembles most the above-described fossil by its general form, but is more 
turbinate, and presents a greater number of septa. 
6. Montiivattia Detasecut. Tab. XXVI, figs. 5, 5a, 5d. 
MonTLIVALTIA DECIPIENS, M‘Coy, Ann. and Mag. of Nat. Hist., s, 2, vol. ii, p. 419, 1848; 
(not Anthophyllum decipiens, Goldfuss.) 
Corallum free, very short, almost discoidal, circular ; its inferior surface slightly concave, 
and presenting a small central cicatrix, indicating its original point of adhesion. Lpitheca 
= 
Tab. xxi, fig. 1. 
Anthophyllum patiriforme, Michelin, Iconogr. Zooph., tab. 1, fig. 3. 
Anthophyllum detritum, Michelin, Iconogr., tab. x, fig. 1. 
Anthophyllum inequale, Michelin, op. cit., tab. 1, fig. 4. 
Caryophyllia striatulata, Michelin, op. cit., tab. J, fig. 9. 
Lasmophyllia subtruneata, D’Orbigny, Prod. de Paleont., vol. i, p. 321, 
Milne Edwards and J. Haime, Ann. des Sc. Nat., s. 3, vol. x, p. 257. 
Milne Edwards and J. Haime, loc. cit., p. 294. 
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