BIBLIOGKAPHIC LIST OF GENERA AND SPECIES. 871 



Ohiocrinus laxus— Continued. 



Heteroerinus oehanua Miller, Cat. Amer. Pal. Fosa. (ed. 2), 1883, p. 283. 

 Ohioerinus oehanua Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 



1886, p. 133 (Rev. Pal., pt. 3, aec. 2, p. 209). 

 Mayaville (Fairmount): Cincinnati, Ohio, and vicinity. 

 Plesiotype — Cat. No. 42304, U.S.N.M. (cotype of FT. oehanua). 



Ohiocrinus oshanus Wachsmuth and Springer. See Ohioerinua laxus. 



Ohiocrinus vaupeli Springer. See Ohiocrinus conatrictua. 



OLDHAMIA Forbes. Genotype: O. radiata Forbes. 



Oldhamia Forbes, Jour. Geol. Soc. Dublin, 4, 1848, p. 20. 



Oldhamia fruticosa Hall. See Chaetomorpha? prima and Callithamnopais fruticosa. 



Oldhamia (Murchisonites) occidens Walcott. 



Oldhamia (Murchisonites) occidens Walcott, Proc. U. S. Nat. Mus., 17, 1894, 



p. 314, fig.l.— Ruedemann, Bull. New York State Mus., 133, 1909, p. 210, fig. 



14. 

 Upper Cambrian or Lower Ordovician: Nassau Township, Rensselaer County, New 



York. 

 Coty pes. —Cat. No. 33669, U.S.N.M. 



Olenus arcuatus Goldfuss. See Triarthrus becki. 



Olenus (Parabolinella) limitis Brogger. See Parabolinella limitis. 



Olenus? Logani Devine. See Loganellus logani. 



Olenus (Sphjerophthalmus) pecten Salter. See Ctenopyge pecten. 



Olenus (Parabolina) spinulosa Salter. See Parabolina spinuloea. 



Olenus triarthrus Goldfuss. See Triarthrus becki. 



Olenus undulostriatus Hall. See Proetus undulostriatus. 



OMOSPIRA Ulrich. Genotype: O. laticincta Ulrich. 



Murchisonia (part) Hall, Salter and Billings 

 Omospira Ulrich, Geol. Minnesota, 3, pt. 2, 1897, pp. 932-944. — Koken, Neues 



Jahrb. Min., Geol. Pal., 1, 1898, p. 15. 

 Ormospira Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. G31. 



Omospira alexandra (Billings). 



Murchisonia ventricosa Salter (not Hall, 1847), Can. Org. Rem., Geol. Surv. Can- 

 ada, dec. 1, 1859, p. 23; pi. 5, figs. 2, 2a, 3. 



Murchisonia Alexandra Billings, Geol. Surv. Canada, Pal. Foss., 1, 18G5, p. 172. 



Omospira alexandra Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 946, 

 pi. 70, figs. 66 and 67. 



Ormospira alexandra Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 631, 

 fig. 854d. 



Black River (Leray): Pauquette's Rapids, Ottawa River, Canada; Mercer 

 County, Kentucky. 



riesiotypes.—C&t. Nos. 45943, 45944, U.S.N.M. 



Omospira laticincta Ulrich. 



Omospira laticincta Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 945, pi. 70, figs. 

 64, 65. 



