BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1291 



Trimerella billingsi Dull. 



Trimerella billingsi Dall, Amer. Jour. Couch., 7, 1871, p. 82, pi. 11, figs. 1-3.— 

 Davidson and King, Quart. Jour. Geol. Soc. London, 30, 1874, p. 150, pi. 16, 

 figs. 8, 9. — Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 55. 



Niagaran (Guelph): New Hope, Ontario. 



Trimerella borealis Whiteaves. 



Trimerella borealis Whiteaves, Ottawa Nat., 16, 1902, p. 142, pi. 3, figs. 2, 3; Geol. 



Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 250, pi. 25, figs. 3, 3a. 

 Niagaran: Ekwan River, Canada. 



Trimerella conradi Dall. See Dinobolus conradi. 



Trimerella dalli Davidson and King. 



Trimerella dalli Davidson and King, Quart. Jour. Geol. Soc. London, 30, 1874, 



p. 154, pi. 15, figs. 1-3.— Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pi. 



4A, fig. 10.— Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 56 



(loc. occ). 

 Niagaran (Guelph): Hespelar, Flora, and New Hope, Ontario. 



Trimerella ekwaneusis Whiteaves. 



Trimerella Equanensis Whiteaves, Ottawa Nat., 16, 1902, p. 141, pi. 2, figs. 1, 2; 



pi. 3, fig. 1. 

 Trimerella Ekwanensis Whiteaves, Geol. Surv. Canada, Ann. Rep., n. s., 16, App. 



F, 1904, p. 41; ibid., Pal. Foss., 3, pt, 4, 1906, p. 249, pi. 24, fig. 7; pi. 25, 



figs. 1, 2. 

 Niagaran: Ekwan River, Canada. 



Trimerella galtensis Davidson and King. See Rhinobolus galtensis. 



Trimerella grandis Billings. 



Trimerella grandis Billings, Pal. Fossils, 1, 1862, pp. 166, 167, fig. 151.— Dall, 

 Amer. Jour. Conch., 2, 1870, p. 160; ibid., 7, 1871, p. 82.— Hall, 23d Rep. 

 New York State Cab. Nat. Hist., 1873, pi. 13, figs. 11-16.— Davidson and King, 

 Quart. Jour. Geol. Soc. London, 30, 1874, pi. 13, figs. 2, 3.— Nicholson, Pal. 

 Prov. Ontario, 1875, p. 67, fig. 37— Miller, N. A. Geol. Pal., 1889, p. 386, 

 figs. 631, 632.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1221, 

 figs.— Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pi. 4A, figs. 1, 2; pi. 

 4B, figs. 2-5. — Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 

 53.— Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 192, fig. 226c, d. 



Niagaran (Guelph): Gait, New Hope, Elora, and Hespelar, Ontario; near Hills- 

 boro, Ohio; Wisconsin. 



Trimerella minor Dall. See Rhinobolus galtensis. 



Trimerella ohioensis Meek. 



Trimerella ohioensis Meek, Amer. Jour. Sci., 3d ser., 1, 1871, p. 305. — Dall, Amer. 

 Jour. Conch., 7, 1871, p. 83.— Davidson and King, Geol. Mag., 9, 1872 — 

 Meek, Pal. Ohio, 1, 1873, p. 183, pi. 16, fig. 1; Quart. Jour. Geol. Soc. London, 

 30, 1874, p. 153, pi. 16, figs. 3-7; pi. 19, figs. 1-2.— Lesley, Geol. Surv. Penn- 

 sylvania, Rep. P 4, 1890, p. 1222, figs— Hall and Clarke, Pal. New York, 8, 

 pt. 1, 1892, pi. 4A, figs. 3-9.— Whiteaves, Pal. Foss. Geol. Surv. Canada, 3, 

 pt. 2, p. 54, pi. 10, figs. 1, la. — Grabau and Shimer, N. A. Index Fossils, 1, 

 p. 191, figs. 226a, b. 



Niagaran (Guelph): Genoa, Ottawa County, Ohio; Port Byron, Illinois; Elora, 

 Ontario. 



Holotype.—C&t. No. 7801, U.S.N.M. 

 84243°— Bull. 92— vol 2—15 37 



