Sept., I860.] ELLIOTT SOCTETY. 27 



Check Lists of the Shells of North America, prei)ared for the 

 Smithsonian Institution, by Lea, Carpenter, Stimpson, Prime and 

 Binney. 



D(yti<itio7is to the CoUectimi. 



Eggs of Ophiosaurus ventraUs, from Beaufort, S. C. Presented 

 by Prof. L. B. Gihhes. 



Dk. J. F. M. Geddings mentioned that lie had examined a specimen of OpM- 

 osfmrus ventrcdis, in wliich the tail, having been broken off, was midergoing 

 reproduction. Instead of the vertebral cohnnn, there was a cartilaginous re- 

 presentation which was divided so as to indicate distinct vertebral elements. 

 "Whether this was really the result of a bona fide outgTOwth, or only the remains 

 of a mutilated vertebral colrann degraded by absorption, he could not, from 

 the observation, undertake to say. 



SEPTE^LBEK 1st, 1860. 



Vice-President W. Weagg Smith in the Chaii\ 



Contributions to the Library. 



Proceedings of the Boston Society of Natural History, pages 

 289-320. 



Physical isch-Medicinische Gesellschaft in Wiirzbnrg : Natimvis- 

 senschaftlicher Zeitschrift, von H. Miiller, A. Schenck, imd E. 

 WagTier. 



Denkschrlften der Koniglich Baierische Botanisolie Gesellschaft 

 zu Eegenshm^g, 1859. 



Ansprache gehalten an des Ersten Decennimn der Kaiserlich- 

 Kbnighchen Geologische Eeichsanstalt in Wien, Nov., 1859. 



