Crl BRITISH FOSSIL CORALS. 



6. Montlivaltia radiata, Duncan. 



7. Sepfasfrcea Eveshami, 



8. LepidopliijlUa Stricklandi, 



9. Isastraa endothecata, 

 10. — insignis, 

 1 L — StricMandi, 

 12. Ci/athocamia globosa. 



CORALS FROM THE MIDDLE LIAS. 



XIX. Corals from the Zone of Ammonites Jamesoni, Sow. 



Dr. Wriglit notices that this zone is well developed in the Island of Pabba, near Skye, 

 in the Hebrides, and the remarkable Coral about to be described appears to form a bed 

 there of some extent.^ 



Family— ASTRtEACE^ . 

 Genus — Lepidoph ylli a . 

 1. Lepidophvllia Hebridensis, Duncan. PI. XVI, figs. 1—4. 



The corallum is flat, and the corallites are short. 



The calices vary in size and number; they are open and shallow, and ai'e crowded with 

 delicate, unequal, and not prominent septa. 



The septal arrangement is very irregular. The laminae are dentate and narrow, 

 and the largest approach the axial space. In calices of ordinary size there are four 

 cycles of septa, and part of a fifth in some systems, whilst in the largest calices the fifth 

 cycle is complete. 



The epitheca on the free wall of the corallites, where they overlap those below them in 

 the general imbrication, is smooth. The calicular gemmation occurs centrally, and also 

 near the margin. 



Height of the corallum /gths inch. 



Breadth of the calices ^ths — /^ths inch. 



Locality. Pabba shale. 



1 n the Collection of the School of Mines, Jermyn Street. 



' See note 1, page 41, Part IV, No. 1. 



