FROM THE ZONE OF AMMONITES BUCKLANDI. 53 



Division — Astr^ace^. 

 Gemcs nov.- — Lepidophyllia. 



The corallurn is compound, and the coraUites 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 Pabba, 

 in the Middle Lias. 



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



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



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

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



The fossa is deep. 



The costse are distinct. 



The epitheca is scanty. 



Height of corallum 1 inch. Breadth of calice /gths inch. 



Locality. Chadbury, Worcestershire. 



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

 Strickland, F.G.S. 



Genus — Isastr^ea. 

 1. IsASTR^A ENDOTHECATA, Duncan. PI. XII, figs. 17 — 21. 



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



base. 



The caUces 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 are very irregular. 

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



