456 SYNOPSIS OP AMERICAN FOSSIL BRACHIOPODA. [iiULi,.87. 



Trimerella acuminata liilliiigs. Guelpli (Sil.). 



Trimerolla acuminata Billiugs, Pal. Fossils, I, 1862, pp. 167, 168, fig. 152;— 



Amt'ricaii .Tour. Sci., 3il ser., I, 1871, p. 471;— Ann. Mag. Nat. Mist., 4tli ser., 



VIII, 1871, p. 140.— Dall, American Jour. Conch., VII, 1871, p. 82.— David- 

 sou ami King, Quart. Jour. Geol. Soc. London, XXX, 1874, p. 146, pi. 15, 

 figs. 4-7; pi. 16, figs. 1, 2. — Nicholson, Pal. Prov. Outario, 1875, i>. 08, fig. 

 ' d.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 4B, fig. 6. 



Loc. Gait, New Hope, and Hespelar, Outario; near Hillsboro, Ohio; Port Byron, 

 Illinois; Gotland and Faro. 



Trimerella billingsi Dall. Guelph (Sil.). 



Trimerella billingsi Dall, American Jour. Conoli., VII, 1871, p. 82, pi. 11, figs. 



1-3. — Davidson and King, Quart. Jour. Geol. Soc. London, XXX, 1874, p. 150, 



pi. 16, figs. 8, 9. 

 Loc. New Hope, Ontario, Canada. 



Trimerella dalli Davidson and King. Guelpli (Sil.). 



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

 p. 154, pi. 15, figs. 1-3.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, 

 pi. 4A, fig. 10. 



Loc. Hespelar, Elora, and New Hope, Ontario, Canada. 



Trimerella galtensis Hall=Ehinobolus galtensis. 



Trimerella grandis Billings. Guelph (Sil.). 



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

 American Jour. Conch., II, 1870, p. 160;— Ibidem, VII, 1871, p. 82.— Hall, 

 Twenty-third Kep. N. Y. State Cab. Nat. Hist., 1873, pi. 13, figs. 11-16.— 

 Davidson and King, Quart. Jour. Geol. Soc. Loudon, XXX, 1874, pi. 13, figs. 

 2, 3.— Nicholson, Pal. Prov. Ontario, 1875, p. 67, fig. 37.— Hall and Clarke, 

 Pal. New York, VIII, Pt. I, 1892, pi. 4A, figs. 1, 2; pi. 4B, figs. 2-5. 



Loc. Gait, NcAV Hope, and Elora, Hespelar, Ontario, Canada; near Hillsboro, 

 Ohio; AVisconsin. 



Trimerella minor Dall=Rliinobolus galtensis. 



Trimerella ohioensis Meek. Niagara (Sil.). 



Trimerella ohioensis Meek, American Jour. Sci., 3d ser., I, 1871, p. 305. — Dall, 



American Jour. Conch., VII, 1871, p. 83. — Davidson and King, Geol. Mag., 



IX, 1872.— Meek, Pal. Ohio, T, 1873, p. 183, pi. 16, fig. 1.— Davidson and King, 

 Quart. Jour. Geol. Soc. Londou, XXX, 1874, p. 153, pi. 16, figs. 3-7; pi. 19, 

 figs. 1-2.— Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, pi, 4A, figs. 3-9. 



Loc. Genoa, Ottawa County, Ohio; Port Byron, Illinois; Ontario, Canada, 



TRIPLEGIA Hall. Genotype Atrypa extans Emmons. 



Triplesia Hall, Pal. New York, III, 1859, p. 522;— Twelfth Rep. N. Y. State Cab 



Nat. Hist., 1859, p. 44.— Waagen, Palieontologica Indica, Ser. XIII, I, 1884, 



p. 576. 

 Triplecia Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 269.— WincheB 



and Schuchert, Minnesota Geol. Survey, III, 1893, p. 408.— Hall and Clarke, 



Eleventh Ann. Rep. N. Y. State Geologist, 1894, p. 289. 

 Dicraniscus Meek, American Jour. Sci., 3d ser., IV, 1872, p. 279.— Pal. Ohio, I, 



1873, p. 576. 



Triplecia cuspidata Hall. Trenton (Ord.). 



Atrypa cuspidata Hall, Pal. New Y'ork, I, 1847, p. 138, pi. 33*, fig. 1, aud p. 318. 

 Triplesia cuspidata Hall, Pal. New Y'ork, III, 1859, p. 522.— Hall and Clarke, 



Pal. New York, VIII, Pt. I, 1892, p. 270. 

 Loc. Lowville, Lewis County. New York. 



