250 Forty-third Report on the State Museum. 



S. dvbia, Hall, 1860 = Pentamerella dubia. 



S. dubia, Nettelroth, 1889. ?Niagara. 



S. duodenaria, Hall, 1843. Upper Helderberg. 



S. dupliplicata, Conrad, 1842. Hamilton. This will very likely 

 prove to be a syn. for S. granulifera. Hall = S. granulosa, Conrad. 

 • 8. duplicata, Hall, 1867 = S. dupliplicata, Conrad, 1842. 



S. eatoni, Hall, 1857. Syn. for S. audacula, Conrad. 



S. elizjB (Hartt) Rathbun, 1874. Mid. Devonian of South America. 



S. engelmanni, Meek and Worthen, 1868 (non Meek). Syn. for 

 S. wortheni. Meek (non Hall). See S. worthenana, n. sp. 



S. engelmanni, Meek, 1860. Mid. Devonian. 



S. eudora. Hall, 1861. Niagara. 



S. euruteines, Owen, 1844. Hamilton. 



S. eurutines ^ar. fornacula. Hall, 1857. Hamilton. 



S. extenuata, Hall, 1858 = Syringothyris extenaata. 



S.fasciger, Owen, 1852 (non Keyserling). Syn. for S. camerata, 

 Morton. 



S. fastigata, Morton, 1836. Coal Measures. 



S.fastigata, Meek and Worthen, 1870 (non Morton). Syn. for S. 

 mortonana. Miller. 



S. filicosta, A. Winchell, ^866. Hamilton. 

 ? S. fimbriata, Morton, 1836. Coal Measures. 



S. fimbriata, Conrad, 1842. Oriskany to Hamilton. As this name 

 was preoccupied by Morton, Mr. S. A. Miller has proposed S. conradana 

 to take its place. This name can scarcely be accepted, as Morton's 

 species may not be a Spin/era. 



S.fischeri, Castelnau, 1843. Syn. for S. macrojaleura, Conrad. 



S. foggi, Nettelroth, 1889. Niagara. 



S. forbesi, Norwood and Pratten, 1854. Burlington. 



S. formosa. Hall, 1857. Hamilton. 



S. fornacula. Meek and Worthen, 1868 (non Hall). Syn. for S. 

 parryana. Hall. 



S. fornacula, Hall, 1857 = S. eurutines, var. fornacula. 



S. fornax. Hall, 1857. Hamilton. 



S. franklini. Meek, 1869. Devonian. 



S. fultonensis, Worthen, 1873. Coal Measures. 



S. gaspensis, Billings, 1874. Gaspe. 



S. gibbosa, Hall, 1861. Niagara. 



S. glabra, Martin species. Occurs in the coal measures of Nova 

 Scotia according to Dawson. 



S. glabra var. contracta, Meek and Worthen, 1861. Chester. 



S. glabra var. nevadensis, Walcott, 1884. Upper Devonian. 



