1332 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Wilsonia wilsoni (Sowerby). 



Terebratula wilsoni Sowerby, Mineral Concb., 1818, p. 118, fig. 3. 

 Rhynchonella wilsoni Roemer, Sil. Fauna West Tennessee, 1860, p. 71, pi. 5, 



fig. 13. 

 Wilsonia wilsoni Hall and Clarke, Pal. New York, 8, pt. 2, 1893, p. 198.— Schu- 



cbert, Bull. TJ. S. Geol. Surv., 273, 1897, p. 4G2. 

 Middle Silurian: Europe; Decatur County, Tennessee; Louisville, Kentucky; 



Lake Temiscouata, New Brunswick. 



WINGIA Seely. Genotype: W. congregata Seely. 



Wingia Seely ; Rep. Vermont State Geol., 5, 1906, p. 178. 



Observation. —This genus and all of its species are based on the well-known 

 intraformational (edgewise) conglomerates of the Beekmantown, some of which 

 may be algal in origin. 



Wingia congregata Seely. 



Wingia congregata Seely, Rep. Vermont State Geol., 5, 1906, p. 178, pi. 39. 

 Canadian (Beekmantown): Shoreham, Fort Cassin, etc., Vermont. 



Wingia discoidea Seely. 



Wingia discoidea Seely, Rep. Vermont State Geol., 5, 1906, p. 179, pi. 39. 

 Canadian (Beekmantown): Shoreham, etc., Vermont. 



Wingia lapilla Seely. 



Wingia lapilla Seely, Rep. Vermont State Geol., 5, 1906, p. 179, pi. 40. 

 Canadian (Beekmantown): Shoreham, etc., Vermont. 



XENOCRINUS Miller. Genotype: X. penicillus Miller. 



Xenocrinus Miller, Jour. Cincinnati Soc. Nat. Hist., 4, 1881, p. 71. — Carpenter, 

 Proc. Roy. Soc. London, 35, 1883, p. 139; Philadelphia Trans. Roy. Soc. 

 London, 174, 1884, p. 925. — Wachsmuth and Springer, Amer. Jour. Sci., 25, 

 1883, p. 266; Proc. Acad. Nat. Sci. Philadelphia, 18S5, p. 317; Rev. Pal., 3, 

 p. 94.— Miller, N. A. Geol. Pal., 1889, p. 287.— Wachsmuth and Springer, 

 Mem. Mus. Comp. Zool., Harvard., 20, 1897, p. 182.— J. F. James, Jour. 

 Cincinnati Soc. Nat. Hist., 19, 1897, p. 106. — Bather, Treatise on Zool., pt. 

 3, Echinoderma, 1900, p. 165, fig. 78, 3.— Wachsmuth, ZitteJ-Eastman Textb. 

 Pal., 1, 1900, p. 145.— Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 

 1908, p. 715.— Springer, Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 193. 



Xenocrinus baeri (Meek). 



Glyptocrinus Baeri Meek, Amer. Jour. Sci., 3d ser., 3, 1872, p. 260; Geol. Surv. 



Ohio, Pal., 1, 1873, p. 37, pi. 2, figs, la, b. — Miller, Jour. Cincinnati Soc. Nat. 



Hist., 3, 18S0, p. 234, pi. 7, figs. 3, 4; ibid., 6, 1883, p. 226.— James, ibid., 8, 



1885, p. 71.— Dyche, ibid., 15, 1892, p. 101; Amer. Geol., 10, 1892, p. 130; 



Science, 20, 1892, p. 66. 

 Reteocrinus Baeri Wachsmuth and Springer, Amer. Jour. Sci., 25, 1883, p. 266. 

 Xenocrinus Baeri Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 



1885, pp. 316-318 (Rev. Pal., pt. 3, sec. 1, pp. 94, 95, 96); Mem. Mus. Comp., 



Zool., Harvard, 20, 1897, p. 185, pi. 9, figs. 5a-d. — James, Jour. Cincinnati Soc. 



Nat. Hist., 19, 1897, p. 108.— Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. 



Indiana, 1908, p. 734, pi. 4, figs. 1, la. 

 Richmond (Liberty): Richmond, Indiana; Waynesville, Ohio. 

 Plesiotypes— Cat. No. 40761, U.S.N.M. 



