248 FORTT-THIRD REPORT ON THE StATE MuSEUM. 



families to suggest any satisfactory grouping of the genera in their 

 natural relations to each other. This can scarcely be accomplished in 

 a satisf atory manner until we have more extensive collections for study. 



J. H. 



Spirifera, Sowerby. 



S. acanthoptera, Conrad, 1842. Hamilton. 



S. acuminata, Conrad, 1839. Corniferous and Hamilton. 



S. acuticostata, De Koninck species. Identified as occurring in the 

 Permo-Carboniferous of Nova Scotia by Sir William Dawson. 



S. agelaia. Meek, 1873. Carboniferous, 



S. alatus, Castelnau, 1843, non Schlotheim. Syn. for S. arenosa, 

 Conrad. 



S. albapinensis, Hall & Whitfield, 1877. Kinderhook. 



S. alceformis, De Verneuil, 1843. Syn. for S. arenosa, Conrad. 



S. aldrichi, Etheridge, 1878. Devonian. 



S. alta, Hall, 1867 = Syringothyris alta. 



S. amara. Swallow, 1860. Choteau. 



S. angusta. Hall, 1857. Hamilton and Portage. 



S. annse. Swallow, 1860. Hamilton. 



S. annectans, Walcott, 1884. Carboniferous. 



S. arata, Hall, 1857. Syn. for S. granulifera. 



S arctica, Haughton, 1857. Devonian. 



S. arctisegmenta, Hall, 1857. Upper Helderberg. 



S. arenosa, Conrad, 1839. Oriskany and Corniferous. 



S. argentaria, Meek, 1877. Syn. for S. pinonensis, Meek. 



S. arrecta. Hall, 1«59. Oriskany. 



S. aspera. Hall, 1858. Hamilton. 



S. asperata, Ringueberg, 1886. Niagara. 



S. atwaterana, Miller. Syn. for S. ligus, Owen. 



S. audacula, Conrad, 1842. Marcellus and Hamilton. 



S. belphegor, Clarke, 1885. Genesee. 



S. bialveata, Conrad, 1842. Syn. for S. radiata, Sowerby. 



S. bicostata, Vanuxem, 1842. Niagara. 



S. bicostata var. petila. Hall. Niagara. 



S. bidorsalis, A. Winchell, 1866. Hamilton. 



S. hiforata var. lynx, Hall, 1852; = Orthis (Platystrophia) lynx, 

 Eichwald. 



S. bifurcata. Hall, 1857. ? Syn. for S. leidyi, Norwood and Pratten. 



S. billingsana, S. A. Miller, 1889. Devonian. 



S. hiloba, Hall, 1852 =^ Orthis (Bilobites) biloba, Linne. 



S. bimesialis, Hall, 1858. Hamilton and Chemung. 



S. biplicata. Hall, 1858. Kinderhook. 



