1100 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Romople u rides tumid us Ruedemann. 



Remopleurides tumidua Ruedemann, Bull. New York State Mus., 49, 1901, p. 



54, pi. 4, figs. 2-4. 

 Mohawkian (Rysedorph) : Rysedorph Hill, Rensselaer County, New York. 



RENSSEIJERIA Hall. Genotype: Terebratula ovoides Eaton. 



Rensselseria Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, p. 39; Pal. 

 New York, 3, 1859, p. 454. Ball, Amer. Jour. Conch., 6, 1870, p. 105. Clay- 

 pole, Proc. Amer. Philos. Soc., 1883, p. 235. Hall and Clarke, Pal. New 

 York, 8, pt. 2, 1893, p. 255; 13th Ann. Rep. New York State Geol., 1895, 

 p. 849. 



Rensselseria keyserensis Swartz. 



Rensseleeria keyserensis Swartz, Maryland Geol. Surv., Low. Dev., 1913, p. 384, 



pi. 66, figs. 26-28. 

 Helderbergian (Keyser): Three-fourths mile southwest of Rawlings, Maryland. 



Rensselaeria mutabilis (Hall). 



Meganteris mutabilis Hall, 10th Ann. Rep. New York State Cab. Nat. Hist., 



1857, p. 97. 



Rensselaeria mutabilis Hall, Pal. New York, 3, 1859, p. 254, pi. 45, figs. 2a-2p. 

 Schuchert and Maynard, Maryland Geol. Surv., Low. Dev., 1913, p. 378, 



pi. 66, figs. 5, 6. 



Helderbergian: Albany County, New York (New Scotland): Keyser, West Vir- 

 ginia; near Cumberland, Corriganville, and Tonoloway, Maryland (Keyser). 



Rensselaeria (Beachla) proaYita Schuchert. 



Rensselseria (Beachia) proavita Schuchert and Maynard, Maryland Geol. Surv., 



Low Dev., 1913, p. 385, pi. 67, figs. 1-3. 

 Helderbergian (Keyser): Pinto, Maryland; New Bloomfield, Pennsylvania. 



RETEOCRINUS Billings. Genotype: R. stellaris Billings. 



Reteocrinus Billings, Geol. Surv. Canada, dec. 4, 1859, p. 63. Wetherby, Jour. 

 Cincinnati Soc. Nat. Hist., 4, 1881, p. 83. Wachsmuth and Springer, Proc. 

 Acad. Nat. Sci. Philadelphia, 1881, p. 365 (Rev. Pal., pt. 2, p. 191); ibid., 

 1887, p. 105; 1890, pp. 353-390. Miller, Jour. Cincinnati Soc. Nat. Hist., 

 5, 1882, p. 36. Wachsmuth and Springer, Amer. Jour. Sci., 3d ser., 25, 1883, 

 p. 255. Miller, Amer. Jour. Sci., 1883, pp. 105, 113. Carpenter, Phil. Trans. 

 Royal Soc. London, 174, 1884, pp. 923, 924, 927, 930; Proc. Royal Soc. Lon- 

 don, 35, 1883, p. 139. Miller, N. A. Geol. Pal., 1889, p. 277. James, Jour. 

 Cincinnati Soc. Nat. Hist., 19, 1897, pp. 101, 102. Wachsmuth and Springer, 

 Mem. Mus. Comp. Zool., Harvard, 20, 1897, p. 176. Bather, Treatise on 

 Zool., pt. 3, Echinoderma, London, 1900, p. 198. Wachsmuth, Zittel-Eastman 

 Textb. Pal., 1, 1900, p. 144. Grabau and Shimer, N. A. Index Fossils, 2, 

 1910, p. 546. Springer, Geol. Surv. Canada, Mem. 15P, 1911, p. 9; Zittel- 

 Eastman Textb. Pal., 2d ed., 1913, p. 186. 



Gaurocrinus Miller, Jour. Cincinnati Soc. Nat. Hist., 6, 1883, pp. 219-228. 

 Carpenter, Phil. Trans. Royal Soc. London, 174, 1884, p. 932. Miller, N. A. 

 Geol. Pal., 1889, p. 246. Bather, Treatise on Zool., pt. 3, Echinoderma, 

 London, 1900, p. 203. (Genotype: Glyptocrinus nealli Hall.) 



Reteocrinus alveola tus Miller and Gurley. 



Reteocrinus alveolatus Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 5, 

 1894, p. 26, pi. 2, fig. 22. Miller, N. A. Geol. Pal., 2d App., 1897, p. 752, 

 fig. 1390. Springer, Geol. Surv. Canada, Mem. 15P, 1911, p. 10, pi. 1, figs. 1-5. 



Trenton (Curdsville): Mercer County, Kentucky; Kirkfield, Ontario. 



