790 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Matherella saratogensis (Walcott). 



Trochus? saratogensis Walcott, Proc. U. S. Nat. Mus., 13, 1890, p. 268, pi. 20, 



fig. 3. 

 Billingsia saratogensis Walcott, Bull. U. S. Geol. Surv., 30, 1886, p. 21, ibid., 81, 



1891, p. 346. Miller, N. A. Geol. Pal., 1889, p. 398, fig. 655. Lesley, Geol. 



Surv. Pennsylvania, Rep. P4, 1889, p. 92, fig. 

 Matherella saratogensis Walcott, Smiths. Misc. Coll., 57, 1912, p. 264, pi. 41, figs. 



18-21. 

 Ozarkian or Upper Cambrian (Hoyt): Four miles west of Saratoga Springs, New 



York. 

 Cotypes Cat. No. 23847 U.S.N.M. 



MATHERIA Billings. Genotype: M. tenera Billings. 



Matheria Billings, Can. Nat. Geol., 3, 1858, p. 440; Geol. Surv. Canada, Rep. 

 Progr. for 1857, 1858, p. 188. Miller, N. A. Geol. Pal., 1889, p. 488. Ulrich, 

 Geol. Minnesota, 3, pt. 2, 1894, p. 563. 



Matheria brevis Whiteaves. 



Matheria brevis Whiteaves, Ottawa Nat., 17, 1903, p. 33, fig. 1, la; Geol. Mag., 



dec. 4, 10, 1903, p. 358, figs. 1, la; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 



1906, p. 321, fig. 25. 

 Trenton: Ottawa, Ontario. 



Matheria recta (Hall). 



Modiolopsis rectus Hall, 20th Rep. New York State Cab. Hist., 1868 (extras, 

 March, 1865), p. 338, pi. 14 (5), figs. 4, 5, p. 389; rev. ed., 1870, p. 386, pi. 14, 

 figs. 4, 5. Chamberlin, Geol. Wisconsin, 1, 1883, p. 192, figs. 



Clidophorus m'chesneyanus Winchell and Marcy, Mem. Boston Soc. Nat. Hist., 

 1, 1865, p. 96, pi. 3, fig. 3; p. 109. 



Niagaran (Racine): Racine, Wisconsin; Bridgeport, Illinois. 



Matheria rugosa Ulrich. 



Matheria rugosa Ulrich, 19th Ann. Rep. Geol. Nat. Hist. Surv. Minnesota, 1892, 



p. 241, fig. 26; Geol. Minnesota, 3, pt. 2, 1894, p. 563, pi. 36, figs. 29, 30; fig. 



35, 2 (p. 477). 



Trenton (Prosser): Six miles south of Cannon Falls, Minftesota. 

 Holotype.C&t. No. 46226, U.S.N.M. 



Matheria tenera Billings. 



Matheria tener Billings, Geol. Surv. Canada, Rep. Progr. for 1857, 1858, p. 188, 

 fig. 18; Canadian Nat. Geol., 3, 1858, p. 440, fig. 18; Geol. Canada, Geol. Surv. 

 Canada, 1863, p. 147, fig. 100, a-d. Miller, N. A. Geol. Pal., 1889, p. 488, 

 fig. 846. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 380, figs. 

 Trenton: Blue Point, Lake St. John, Canada. 



MATTHEVIA Walcott. Genotype: M. variabilis Walcott. 



Matthevia Walcott, Amer. Jour. Sci. Arts, 3d ser., 30, 1885, pp. 17, 18; Bull. U. S. 

 Geol. Surv., 30, 1886, p. 223. Miller, N. A. Geol. Pal., 1889, p. 392. 



Matthevia variabilis Walcott. 



Matthevia variabilis Walcott, Amer. Jour. Sci., 3d ser., 30, 1885, p. 18, figs. 1-6, 



p. 20; Bull. U. S. Geol. Surv., 30, 1886, pp. 224-225, pi. 32, figs. 1-12; pi. 33, 



figs. 1, la, If. Miller, N. A. Geol. Pal., 1889, p. 392, fig. 647. Lesley, Geol. 



Surv. Pennsylvania, Rep., P4, 1889, p. 381, fig. Walcott, Smiths. Misc. 



Coll., 57, 1912, p. 265, pi. 42, figs. 1-15. 

 Ozarkian or Upper Cambrian (Hoyt): Four miles west of Saratoga Springs, New 



York. 

 Cotypes. Cat. No. 24598, U.S.N.M. 



