182 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



cene fauna of the United States as a whole, we come to the conclusion 

 that it has more of a likeness to that at present living in tlie Caribbean 

 Sea and Atlantic Ocean than to the fauna, recent or fossil, of any other 

 region. 



The descriptions of families and genera will not be repeated in the 

 present work, as they are to be found in the paper of Prof. P. Martin 

 Duncan on "A Revision of the Families and Genera of the Scleroder 

 mic Zoantharia, Edwards and Haime, or Madrepoiaria [M. rugosa 

 excepted)," which also contains the system of classilication employed 

 in the present memoir. 



Tlie author wishes to express his thanks, through Mr. William H. 

 Dall and Mr. Joseph Willcox, to the Wagner Free Institute of Science 

 for the loan of many of the specimens herein described ; also to Mr. T. 

 Wayland Vaughan for much kindly assistance and advice. Mr. 

 Vaughan has looked over the paper after it was written and has 

 attended to having the figures drawn. 



BIBLIOGRAPHY. 



1826-1833. GOLDFUSS, A. Petrefacta Germaniae. 



1834. Ehrenberg, C. G. Beitriige zurphysiologischen Kenntniss derCorallenthiere 

 im Allgemeinen, und besonders des rotheu Meeres, nebst eiueni Versuch znr 

 physiologischen Systematik deraelbeu. Abhaud. Akad. Wiss. Berlin, pp. 

 225-380. 



1834. De Blainvlle, H. M. D. Manuel d'actinologie on de zoophytologie. 



1835. Conrad, T. A. Observations on a portion of the Atlantic Tertiary region. 



Trans. Geol. Soc. Penn., I, Pt. 2, pp. 335-341, pi. xiii. 



1836. De Lamarck, J. B. P. A. Histoire uaturelledes animaux sans vertebres. 2ded. 



II, Histoire des Polypes. Witb notes by G. P. Deshayes and H. Milne- 

 Edwards. 



1837. Rogers, W. B. and H. D. Contributions to the geology of the Tertiary 



Formations of Virginia. Trans. Am. Phil. Soc, new ser., V, p. 319. 



1841. Conrad, T. A. Descriptions of twenty-six new species of fossil shells discov- 



ered in the Medial Tertiary deposit of Calvert Cliffs, Maryland. Proc. Acad. 

 Nat. Sci. Philadelphia, I, pp. 28-33. 



1842. Conrad, T. A. Descriptions of twenty-four new species of fossil shells, chiefly 



from the Tertiary deposits of Calvert Cliffs, Maryland. Jour. Acad. Nat. 

 Sci. Philadelphia, 1st ser., VIII, pp. 183-190. 



1845. Lyell, C. On the Miocene Tertiary strata of Maryland, Virginia, and of 



North and South Carolina. Quart. Jour. Geol. Soc. London, I, pp. 413-429. 

 Lonsdale, W. Account of ten species of Polyparia obtained from the Miocene 

 Tertiary formations of North America. Quart. Jour. Geol. Soc. London, 

 I, pp. 495-509, 10 wood-cuts. 



1846. Conrad, T. A. Observations on the Eocene formation of the United States, 



with description of species of shells, etc., occurring in it. [At end of 



article see] Note; being remarks on Lonsdale's species. Am. Jour. Sci., 2d 



ser., I, pp. 209-221. 

 Dana, J. D. Remarks on Corals (appendix to an article on Eocene fossils of 



United States, by T. A. Conrad). Am. Jour. Sci., 2d ser., 1, pp. 220, 221. 

 Dana, J. D. U. S. Exploring Expedition. Zoophytes. 



1847. Lonsdale, W. Remarks on the Character of several Species of Tertiary Cor- 



als from the United States, in reply to ^Ir. Dana. (Extracted from a letter 

 from W. Lonsdale to C. Lyell, esq.) Aul Jour. Sci., 2d ser., IV, p. 357. 



