FROM THE GAULT. 



31 



List of Upper Greensand Corals from Haldon. 



1. Placosmilia cunei/ormis, Ed. and II. 



2. „ Parkinso7ii, „ 



3. „ ma(/nifica, Duncan. 



4. Peplosmilia depressa, E. de Fronientel. 



5. Astrnccenia decaphjlla, Ed. and II. 



6. Isasfrcea Ilaldonensis, Duncan. 



Peplosmilia Austeni, Ed. and H., and Favia stricia, Ed. and H., are also found at 

 Ilaldon. They have been ah-eady noticed as Upper Greensand forms. 



II. — Corals from the Gault. 



Only six well-marked species of Corals were known to MM. Milne-Edwards and 

 Jules Ilaime as having been found in the Gault. They were all simple or solitary forms, 

 and such as one would expect to find in moderately deep w'ater. It is evident that the 

 area occupied by the English Gault was not the Coral tract of the period. The resem- 

 blance of the Coral-faunas of the Gault and the London Clay is somewhat remarkable, 

 and probably the physical conditions of the area during the deposition of the strata were 

 not very dissimilar. 



The following pages contain the descriptions of some species which were not known to 

 MM. Milne-Edwards and Jules Haime, and some notices of the most important forms 

 they described. 



MADREPORARIA APOROSA. 

 Family— TURBINOLID/E. 



Sub-famili/ — CARYOPIIYLLINyE. 



Division — Caryophylliace^. 

 Ge?ius — Caryophyllia. 



MM. ]\Iilne-Edwards and Jules Ilaime have changed the generic term Cyathina into 

 that of its predecessor Caryophyllia ; consequently Cyathina Boiccrbanki, Ed. and H., is 

 now called CaryophyUia Boiccrbanki, Ed. and II. (' Hist. Nat. dcs Corall.,' vol. ii, p I'^V 



