456 SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. [hull. 87. 



Trimerella acuminata T>illings. Guelpb (Sil.). 



Trimeiilla acuuiiiiata Billings, Pal. Fossils, I, 1862, pj). 167, 168, llg. 152; — 

 American Joiir. Sci., 3d scr., I, 1871, i>. 471; — Ann. Mag. Nat. Hist., 4tli scr., 



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

 son and King, Quart. Jour. Geol. See. London, XXX, 1874, p. 146, pi. 15, 

 figs. 4-7; pi. 16, figs. 1, 2.— Nicholson, Pal. Prov. Ontario, 1875, p. 68, fig. 

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



Loc. Gait, New Hope, and Ilespelar, Ontario; near Hillsboro, Ohio; Port Byron, 

 Illinois; (iotland and Faro. 



Trimerella billingsi Dall. Guelpb (SiL). 



Trimerella billingsi Dall, American Jour. Conch., 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. Guelpb (Sil.). 



Trimerella dalli Davidson and King, Quart. Jour. Geol. .Soc. Loudon, 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 galteusis Hall=Ebinobolns galteusis. 



Trimerella grandis Billings. Guelpb (Sil.). 



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

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

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

 Davidson and King, Quart. Jour. Gool. 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, New Hope, and Elora, Hespelar, Ontario, Canada; near Hillsboro, 

 Ohio; Wisconsin. 



Trimerella minor Dall=Rbinobolus galtensis. 



Trimerella obioensis 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, I, 1873, p. 183, pi. 16, lig. 1.— Davidson and King, 

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

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



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



TRIPLEGIA Hall. Genotype Atrypa extaus Emmons. 



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



Nat. Hist., 18.59, p. 44.— Waagen, Paheontologica Indica, Ser. XIII, I, 1884, 



p. 576. 

 Tri]decia Hall and Clarke, Pal. New York, VIII, Ft. I, 1892, p. 269.— Wincholl 



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



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

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



1873, p. 576. 



Triplecia cuspidata TTall. Trenton (Ord.). 



Atrypa cuspidata Hall, Pal. New York, I, 1847, p. 138, pi. 33*, fig. 1, and p. 318. 

 Triplesia cuspidata Hall, Pal. New York, III, 1859, p. 522.— Hall and Clarke, 



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

 Loc. Lowville, Lewis County. New York. 



