1024 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



POROCRINUS— Continued. 



Eastman Textb. Pal., 1, 1900, p. 184.— Bather, Treatise on Zool., pt. 3, 

 Echinoderma, London, 1900, p. 172, fig. 86.— Grabau and Shimer, N. A. Index 

 Fossils, 2, 1910, p. 473.— Springer, Zittel-Eastman Textb., Pal., 2d ed., 

 1913, p. 217. 



Porocrinus conicus Billings. 



Porocrinus conicus Billings, Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, 

 p. 279; Geol. Surv. Canada, dec. 4, 1859, p. 34, pi. 2, figs. 5a-d.— Zittel, 

 Handb. Pal., 1, Munich, 1879, p. 420, fig. 296a.— Miller, N. A. Geol. Pal., 

 1889, p. 273, fig. 400.— Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 

 474.— Springer, Geol. Surv. Canada, Mem. 15P, 1911, p. 41 (loc. occ). 



Trenton (Curdsville): Ottawa and Kirkfield, Ontario. 



Porocrinus crassus Meek and Worthen. 



Porocrinus crassus Meek and Worthen, Proc. Acad. Nat. Sci. Philadelphia, 1865, 



p. 145; Geol. Surv. Illinois, 3, 1868, p. 330, figs. A, B, pi. 4, figs. 2a, b.— Miller, 



N. A. Geol. Pal., 1889, p. 273, figs. 401, 402. 

 Richmond (Maquoketa) : Oswego, Kendall County, Illinois. 



Porocrinus kentuckiensis Miller and Gurley. 



Porocrinus kentuckiensis Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 



5, 1894, p. 24, pi. 2, fig. 19.— Miller, N. A. Geol. Pal., 2d App., 1897, p. 751, 



fig. 1380. 

 Trenton (Curdsville): Mercer County, Kentucky. 



Porocrinus pentagonius Meek and Worthen. 



Porocrinus pentagonius Meek and Worthen, Proc. Acad. Nat. Sci. Philadelphia, 



1865, p. 146; Geol. Surv. Illinois, 3, 1868, p. 332, pi. 1, fig. 3. 

 Black River (Platteville): Dixon, Illinois. 



Porocrinus shawl Schuchert. 



Porocrinus shawi Schuchert, Proc. IT. S. Nat. Mus., 22, 1900, p. 155, pi. 12, 



figs. 1-3. 

 Mohawkian: Head of Frobisher Bay, Baffin Land. 

 Eolotype— Cat. No. 28145, U.S.N.M. 



Porocrinus smith! Grant. 



Porocrinus Smithi Grant, Trans. Ottawa Field Nat. Club, 1, 1881, p. 42, pi. figa. 



1-8. — Bather, Treatise on Zool., pt. 3, Echinoderma, London, 1900, p. 173, 



fig. 86. 

 Trenton: Belleville, Ontario. 



Posidonia alata Hall. See Cyrtodonta? alata. 

 Posidonomya alata Miller. See Cyrtodonta? alata. 

 Posidonomya amtgdalina Emmons. See Ambonychia amygdalina. 

 Posidonomya bellistriata Emmons. See Ambonychia bellistriata. 

 Posidonomya obtusa Emmons. See Cyrtodonta obtusa. 

 Posidonomya orbicularis Emmons. See Ambonychia orbicularis. 

 Posidonomya? rhomboidea Hall. See Pterinopecten? rhomboideum. 

 Posidonomya subundata Emmons. See Clionychia undata. 



