List of Species of the American Palceozoic Orthis, Spirifera, 

 Spiriferina and Syringothyris. 



[Copied from the nianuacript catalogue of " American Fossil Brachiopoda " of Mr. 

 Cliarles Scliuchert. Communicated for the report of the State Geologist for 1889.] 



Oethis, DalmaD. 



O. ? acuminata, Billings, 1859. Chazy. » 



O. (Platystropbia) acuminata, U. P. James, 1878. Hudson. 



O. (Platystropbia) acutilirata, Conrad, 1842. Hudson River. 



0. acutiloba, Ringueberg, 1888 ^ Bilobites biloba, Linnaeus. 



0. cequivalvis, Hall, 1847 (uon Davidson, 1847). Trenton and Hudson 

 River. 



0. cequivalvis, Hall, 1857 (non 1847 or 1858). Syn. for O. eryna. Hall. 



0. cequivalvis, Hall, 1858 (non 1847 or 1857) = Streptorbyncbus 

 sequivalvus. 



0. cequivalva, Sbaler (non Hall or Davidson). Syn. for O. uberis.Bill 



0. alata, Sbaler, 1865. Syn. for O. Davidsoni, De Verneuil. 



O. alternans, Castlenau, 1843 ( = ? Streptorbyncbus). 



O. alsus, Hall, 1863. Scbobarie grit. 



O. amoena, N. H. Wincbell, 1880. Hudson River. 



0. anticosfAensis, Sbaler. Syn. for O. porcata, McCoy. 

 ? 0. apicalis, Billings, 1865. Quebec group. 



0. arachnoides, Roemer, 1852, and Hall, 1857, = Streptorbyncbus 

 aracbnoideus, Pbillips. 

 ? 0. armanda, Billings, 1865. Quebec. 



O. assimilis. Hall, 1859. Lower Helderberg. 



O. aurelia, Billings, 1874. Gaspe limestone. 

 ? O. barabuensis, A. Wincbell, 1864. Potsdam. 



O. battis, Billings, 1865. Quebec. 



O. bellarugosa, Conrad, 1843. Ti'enton and Galena. ' 



O. bellula (James) Meek, 1873. Hudson River. } 



0. bicostatus, Vanusem, 1842 = Spirifera bicostata. I 



? 0. biHingsi, Hartt, 1868. Cambrian. i,^ 



O. [Bilobites] biloba, Linne. Niagara. | 



