68 



BRITISH FOSSIL CORALS. 



Fig. o. Montlivaltia, from the White Lias of Warwickshire. 



There is a great Montlivaltia in the Leamington beds, which is elliptical and ver}- 

 large at the calice. It is only found in the form of casts, one of which is here figured. 



6. Cast of a Montlivaltia from Leamington. 



A cast of a multiseptate discoidal Montlivaltia is found at Punt Hill, Warwickshire, 

 and I beUeve it to belong either to Montlivaltia Haimei, Chapuis et Dewalque, or to one 

 of its varieties which have been noticed in the part No. 1 of this description of the 

 Corals of the Lias. It is figured below. 



Fig. 7. Montlivaltia, from Punt Hill, Warwickshire. 



The great vertical range of this Montlivaltia has already been noticed. When the 

 local nature of the White Lias is appreciated, and it is acknowledged as " a passage-bed" 

 between the Zone of Avicula contorta and the beds containing Ammonites planorbis, the 

 discovery of these Corals, which in the East of France and in Luxembourg are found in 

 the Ammonites planorbis series, and in that of Ammonites angulatus, will not be exceptional. 



