ALCYONARIA. 223 



17. " Contributions to the Study of the Chief Generic Types of Palae- 



ozoic Corals." 'Ann. Nat. Hist.' 1875-76. Thomson and 

 Nicholson. 



18. "First Report on the Palaeontology of the Province of Ontario." 



1874. Nicholson. 



19. " Fossil Corals of the State of Michigan." 1876. Rominger. 



20. " British Palaeozoic Fossils." 1851. M'Coy. 



21. "Petrefakten Deutschlands." 1826-33. Goldfuss. 



22. " Nouvelles Recherches sur les Animaux Fossiles du Terrain Car- 



bonifere de la Belgique." Premiere Partie. 1872. De Koninck. 



23. "On the Structure and Relations of the Alcyonarian Heliopora 



cserulea," &c. ' Phil. Trans.,' vol. clxvi. 1876, Moseley. 



