Xll 



I cannot conclude this reference to the figures without expressing my warm acknow- 

 ledgments to Mr. George West, for the unwearied pains and great skill with which he has 

 executed them from the actual specimens, as well as for the important aid which, in many 

 cases, I have derived from his intelligent observations on points of structure to which his 

 attention was drawn in the execution of his work, and which would otherwise probably 

 have escaped my notice. 



The following are the principal Works or Papers to which reference has been made : 



Alder, Joshua. 'A Catalogue of the Zoophytes of Northumberland and Durham ;' 8vo, Newcastle, 1857. 

 Blainville, H. M. D, de. 'Manuel d'Actinologie ou de Zoophytologie ;' 8vo, Paris, 1834. 

 Busk, G. ' Catalogue of Marine Polyzoa in the Collection of the British Museum ;' 12mo, London, 1852. 

 Bkonn, H. G. ' Lethsea geognostiea oder Beschreibuug uud Abbildungen der fiir die Gebirgs-Forma- 



tionen bezeichnendsten Versteinerungen ;' 8vo, Stuttgard, 2de Aufl. 1838. 

 „ ' System der urweltlichen Pflanzenthiere, durch Diagnose, Analyse, und Abbildung der 



Geschlechter erliiutert ;' fol. Heidelb., 1825. 

 Bos9, L. A. G. ' ' Histoire naturelle des Vers ;' I8010, Paris, 2de Ed. 1830. 

 Couch, R. Q. 'A Cornish Fauna,' &c. ; 8vo, Truro, 1844. 

 Dawson, J. W. 'Additional Notes ou the Post-Pliocene deposits of the &<t. Lawrence Valley;' 8vo, 



Montreal, 1859. 

 D'Orbigny, Alcide. 'Paleontologie Fran9aise. — Description zoologique et geologique de tous les animaux 



moUusques, et rayonnes fossiles de France. (Terrains Cretaces et Jurassiques ; 



Planches) ;' 8vo, Paris, 1840-53. 

 „ 'Reeherclies zoologiques sur la classe des Molliisques Bryozoaires,' "Ann. d. Sc. Nat.," 3 ser., 



t. xvi and xvii, 1851. 

 DuNKER u. Koch. ' Beitriige zur Kentiiiss des norddeutschen Oolithgebildes und dessen Versteinerungen ,' 



4to, Brunswick, 1837. 

 Ellis J. 'An Essay towards a Natural History of the Corallines,' &c. ; 4to, London, 1755. 

 EsPER, E. J. C. 'Die Pflanzenthiere in Abbildungen nach der Natur, nebst deutlicher Beschreibungen ;' 



4to, Nuremberg, 1791-98. 

 GoLDFUSS, G. A. ' Petrefacta Germanise,' &c. ; fol. Dusseldorf, 1826-33. 

 Gray, J. E. ' Spicilegia Zoologica ;' pt, 1, 1828. 

 Hagenow, F. v. 'Die Bryozoen der Maastrichter Kreidebildung.' 



,, '"Bryozoen," in Geinitz, Grundriss der Versteinerungs-Kunde ;' 8vo, Dresden, 184(). 



Johnston, Geo. ' History of British Zoophytes ;' 2d edition, 8vo, London, 1847. 



Lamarck, J. B. P. A. de. ' Histoire naturelle des Animaux sans Vertebres ;' 2d edition, 8vo, Paris, 1836. 

 Lamouroux, J. 'Exposition methodique des Genres de I'ordre des Polypiers,' &c. ; 4to, Paris, 1821. 

 Lonsdale, W. ' Account of six species of Polyparui obtained from Timber Creek, New Jersey,' " Journ. 



Geol. Soc," vol. i, p. 65, 1845. 

 ,, 'Report on the Corals from the Tertiary formations of North America,' ibid., p. 495. 



