246 Forty-third Report on the State Museum. 



0. pratteni, McChesney, 1860 = Streptorhynchus pratteni. 



0. prceumbona, Hall, 1857 = Ambocoelia preeumbona, 



0. pravus, Hall, 1858. Syn. for Streptorhynchus chemungensis, 

 Conrad. 



O. propinqua, Hall, 1857. UpiDer Helderberg. 



O. punctosti'iata. Hall, 1852. Niagara. 

 0. pyramidalis, Hal], 1852 = Scenidium pyramidale. 

 ? O. quacoensis, Matthew, 1886. Cambrian. 



O. quadrans. Hall, 1859. Lower Helderberg. 



0. Quadricostata, Vanuxem, 1842 = Leiorhynchus quadricostatum. 



O. remnicha, N. H. Winchell, 1886. St. Croix. 



0. resupinata, Hall, 1843 (non Martin). Syn. for O. tulliensis, 

 Vanuxem. 



O. resupinata, Martin species. Sub-Carboniferous. Identified by 

 Hall and Whitfield, 1887, and S. A. Miller, 1881. 



O. resupinata var latirostrata (Toula), Derby, 1874. Carboniferous 

 of South America. Probably identical with O. cora d'Orbigny. 



O. resupinoides, Cox, 1857. Upper Carboniferous. 



0. retrorsa, Salter, 1858. Trenton to Hudson Kiver, 



O. rhynchpnnelliformis, Shaler, 1865. Anticosti. 



0. richmonda, McChesney, 1860. Syn. for Derbya crassa, Meek and 

 Hayden species. 



0. robusta, Hall, 1858 = Derbya robusta. 



O. rugiplicata. Hall and Whitfield. Niagara. 



O. ruida, Billings, 1866. Anticosti. 



O. salemensis, Walcott, 1887. Lower Cambrian. 

 ? 0. sandbergi, N. H. Winchell, 1866 = ? Triplesia sandbergi. 



0. schohariensis, Castelnau, 1843 = Strophonella schohariensis. 



O. scovillii, Miller, 1882. Hudson River. 



O. sectostriata, Ulrich, 1879. Hudson River. 



O. semele, Hall, 1863. Onondaga. 



O. (Platystrophia) sheppardi, Castelnau sp. (Spirifer sheppardi). 

 ? Galena. 



0. sinuata, Hall, 1847. Hudson River. 



O. sola, Billings, 1866. Anticosti. 



O. solitaria. Hall, 1860. Hamilton. 



O. stonensis, Safford, 1869. Trenton. 



O. striatula, Schlotheim species, 1813. Davidson mentions this 

 species occuring in the United States. He probably had reference to 

 0. propinqua, Hall. 



0. striatula, Emmons, 1842 (non Schlt.). Syn. for 0. testudinaria, 

 Dalman. 



