244 Forty-third Report on the State Museum. 



O. leptsenoides, Emmons, 1842. Trenton. 



O. leucosia, Hall, 18G0. Hamilton. 



0. limitaris, Vanuxem, 1842 = Leiorhynchus limitaris. 



O. ? linneyi, James, 1881 — Khynclionella linneyi. 



O. livia, Billings, 18G0. Corniferous. 



O. lonensis, Walcott, 1884. Pogonip. 



O. lucia, Billings, 1874. Gaspe limestone. 



O. I Platystrophia] lynx, Eichwald, 1830. Trenton to Niagara. 



O. maria, Billings, 1862. Hudson River to Mid. Silurian. 



O. macfarlanii. Meek, 1868. Hamilton. 



O. macleodi, Whitfield, 1889. Calciferous. 



O. media, Staler, 1865. Mid. Silurian. 



media, N. H. WincLell, 1880. Trenton. This species is probably 

 equal to O. gibbosa, Billings. Moreover, the name is preoccupied by 

 Shaler. 



O. meeki. Miller, 1875. Hudson River. 

 ? 0. merope, Billings, 1862. Trenton to Hudson River. This species 

 will probably prove to be a Scenidium. 



O. michelini, L'Eveille, 1835. Wayerly to Burlington. 



0. michelini, var. Meek, 1877. Syn. for 0. nevadensis. Meek. 



0. michelini var. burlingfonensi?, Hall, 1858. Syn. for 0. michelini 

 L'Eveille. 

 ? 0. minna, Billings, 1865. Quebec. 



0. minneapolis, N.« H. Winchell, 1880. Trenton. This species ■will 

 very likely prove to be equal to 0. subcequala, Conrad. 



O. missouriensis, Shumard, 1855. Cape Girardeau limest. 



0. missouriensis. Swallow, 1860. Choteau. This species is quite 

 distinct from Shumard's, and closely related to 0. michelini, L'Eveille. 

 It is not advisable to give it another name until we know more of 

 Shumard's species. 



O. mitis. Hall, 1863. Schoharie grit. 



O. ? morganiana, Derby, 1874. Carboniferous of South America. 



0. morrowensis, James, 1874. Hudson River. 



O. multisecta [James], Meek, 1873. Hudson River. 



O. multistriata, Hall, 1859. Lower Helderberg. 



O. musculosa, Hall, 1857. Oriskany. 



0. mycale, Billings, 1862. Quebec. 



O. nettoana, Rathbun, 1874. Middle Devonian of Scuih Amtrica. 



O. nevadensis. Meek, 1877. Sub-Carboniferous. 



0. neglecta, James, 1879. Syn. for 0. dichotoma. Hall, 1847. 



0. nisis. Hall and Whitfield, 1872. Niagara. 



0. nucleus, Hall, 1843. Syn. for Ambcccelia umbonata. 



