FROM THE CRETACEOUS FORMATIONS. 



45 



c. Red Chalk of Hunstanton. 



30. C^clolites poli/morpha, GoXi^hn?,, 's,\i. 



37. Podoseris mammiliformis, Duncan. 

 3S. „ eIo7if/ata, „ 



39. Micrabacia coronula, Goldfuss, sp., and variety. 



D. Gault. 



40. Carophyllia Boioerbanici, Ed. and H., and a variety. 



41. Trocliocyathm conuJus, Phillips, sp. 



42. „ Wilfshirei, Duncan. 



43. „ Harvei/anus, Ed. and H., and five varieties. 



44. Balhycyatlms Sowerbp, Ed. and IT. 



45. Leptocyatkus gracilis, Duncan. 



46. Cyclocyathus Fittoni, Ed. and H. 



47. Smiloirochus elonyatus, Duncan. 



48. „ yranulatus, „ 



49. „ insignis, „ 



50. „ cylindricus „ 



51. Trochosmilia sulcata, Ed. and H. 

 53. Micrabacia Fittoni, Duncan. 



E. Lower Greensand. 



53. Brachycyathus Orbignyanus, Ed. and H. 



54. Smiloirochus Austeni, „ 



55. Trochosmilia Meyeri, Duncan. 



56. Isastraa Morrisii, „ 



57. Turbinoseris De-Fromenteli, Duncan. 



58. Holocystis elegaris, Lonsdale, sp. 



Micrabacia coronula is common to the Upper Greensand and the Red Chalk. 

 Smilotrochus elonyaius is found in the Gault and in the Upper Greensand. 



The number of species of Madreporaria in the Britisli Cretaceous formations is 

 therefore fifty-six. 



MM. Milne-Edwards and Jules Ilainic had described twenty-three species before this 



