FROM THE ZONE OF AMMONITES BUCKLANDI. 53 



Division — A str^ a ce ^ . 



Genus nov. — Lepidophyllia. 



The corallum is compound, and the coralhtes are joined by their walls. The gemma- 

 tion is calicular and gives an overlapping appearance both to the sides and the upper part 

 of the corallum. 



The epitheca is distinct. There is no columella. 



The septa are dentate. The calicular gemmation and Astraeacean characters distinguish 

 the genus. 



There are two species ; one is found at Chadbury, and the other in the Island of Fabba, 

 in the Middle Lias. 



1. Lepidophyllia Stricklandi, Duncan. PI. XII, fig. 15. 



The corallum is tall, and is composed of two sets of coralhtes. 



The calicular gemmation is very frequent and successive. The calicular maigins are 

 sharp and wavy ; and they are free, except where the coralhtes join. 



The fossa is deep. 



The costse are distinct. 



The epitheca is scanty. 



Height of corallum 1 inch. Breadth of calice ^Iths inch. 



Locality. Chadbury, Worcestershire. 



In the Collection of Mrs. Strickland. The specimens were collected by the late Hugh 

 Strickland, F.G.S. 



Genus — Isastr^a. 

 1. Isastr^a endothecata, Duncan. PL XII, figs. 17 — 21. 



The corallum is large, and either massive and flat, or tall and arising from a small 

 base. 



The calices are very irregular in shape, size, and depth. The largest calices are very 

 deep. 



The septa are small, and. often wavy. They are not exsert, but ai"e very irregular. 

 They are faintly dentate, wide apart, and project slightly from the calicular wall. 



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