512 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Euomphalopterus alatus americanus Kindle and Breger. 



Euomphalopterus alatus var. americanvia Kin,dle and Breger, 28tli Ann. Rep. 



Dept. Geol. Nat. Res. Indiana, 1904, p. 459, pi. 13, fig. 6. 

 Euomphalopterus alatus var. Kindle and Breger, ibid., 1904, p. 461. 

 Niagaran: Little Deer Creek, Carroll County, Indiana. 



Euomphalopterus alatus limatoideus Kindle and Breger. 



Euomphalopterus alatus yar. limatoidea Kindle and Breger, 28th Ann. Rep. 



Dep. Geol. Nat. Res. Indiana, 1904, p. 461, pi. 14, fig. 4. 

 Niagaran: Delphi, Indiana. 



Euomphalopterus alatus obsoletus Ulrich. 



Euomphalopterus alatus-obsoletus Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 934, 



figa. 5g-i. 

 Niagaran (Waldron): Waldron, Indiana. 



Euomphalopterus elora (BiUings). 



Pleurotomaria Elora Billings, Geol. Canada, Geol. Sivrv. Canada, 1863, p. 343, 

 fig. 348; Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 154, fig. 135 (adv. sheets 

 1861).— Lesley, Geol. Siu-v. Pennsylvania, Rep. P 4, 1889, p. 708, fig.— 

 Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, p. 74, pi. 11, figs. 5, 6. 



Euomphalopterus Elora "WTiiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, 

 p. 331.— Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 630, fig. 853. 



Niagaran (Guelph): Elora, Ontario. 



Euomphalopterus halei (Hall). 



Pleurotomaria halei Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 34. — Win- 

 chell and Marcy, Mem. Boston Soc. Nat. Hist., 1, 1865, p. 109.— Hall, 20th 

 Rep. New York State Cab. Nat. Hist., 1868, pp. 344, 364, pi. 15 (6), figs. 

 13, 14 (extras, 1865); rev. ed., 1870, p. 392, pi. 15, figs. 13, 14, p. 432.— White- 

 aves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 73, pi. 10, figs. 2, 2a. 



Eotomaria halei Clarke and Ruedemann, Mem. New York State Mus., 5, 1903, p. 

 69 (gen. ref.). 



Trochonema halei Miller, N. A. Geol. Pal., 1889, p. 428 (gen. ref.). 



Euomphalopterus Halei Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 

 1906, p. 330 (gen. ref.). 



Niagaran: Racine, Wisconsin; Bridgeport, Illinois (Racine); Durham, Ontario; 

 and Wisconsin (Guelph). 



Euomphalopterus tyrrelli Parks. 



Euomphalopterus tyrrelli Parks in Tyrrell, 22d Rep. Ontario Bur. Mines, 1913, 



p. 36. 

 Niagaran (Guelph): Severn River, Ontario. 



Euomphalopterus Valeria (Billings). 



Pleurotomaria Valeria Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 169. — 

 Wliiteaves, Pal. Foss., Geol. Siu-v. Canada, 3, pt. 1, 1884, .p. 23, pi. 4, figs. 

 1, la; ibid., pt. 2, 1895, p. 71, pi. 11, figs. 2, 3.— Lesley, Geol. Siurv. Penn- 

 sylvania, Rep. P 4, 1889, p. 721, figs. 



Euomphalopterus Valeria Wliiteaves, Pal. Foss., Geol. Slu:^^ Canada, 3, pt. 4, 

 1906, p. 330 (gen. ref.).— Grabau, Michigan Geol. Surv., Geol. Ser., 1, 1909, 

 p. 191, pi. 28.— Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 630, 

 figs. 851h, j, 852. 



Niagaran (Guelph): Gault, etc., Ontaiio; Ohio. 



Upper Monroan (Lucaa): Salt shaft, Detroit, Michigan. 



