scHucHERT] INDEX AND BIBLIOGRAPHY. 463 



ZYGOSPIRA irall— Continued. 



Hallina Wincliell and Schnchert, Minnesota GpoI. Survey, III, 1893, p. 471. 

 Protozyga Hall and Clarke, Pal. New York, VIII, Pt. 11, 1893, p. 151. 

 Protozyga, Hallina and Zygospira Hall and Clarke, Thirteenth Ann. Rep. N. Y. 

 State Geologist, 1895, pp. 809, 810, 812. 



Zyo-ospira :vquila Sar(leson = Z. nicoletti. 

 Zygospira anti(;ostiensis Davidson=Catazyga erratica. 

 Zygospira cincinnatiensis Meek. Lorraine (Ord.). 



Zygospira cincinnatiensis (James) Meek, Pal. Ohio, 1, 1873, p. 126, pi. 11, fig. 5.— 

 Miller, Cincinnati Quart. Jour. Sci., II, 1875, p. 59.— Hall and Clarke, Pal. 

 New York, VIII, Pt. II, 1895, pi. 54, figs. 13, 14. 

 Loc. Cincinnati, Ohio. 



Zygospira concentrica Ulrich. Lorraine (Ord.). 



Zygospira concentrica Ulrich, Jour. Cincinnati Soc. Nat. Hist., II, 1879, p. 14, 



pi. 7, fig. 10. 

 Loc. Cincinnati, Ohio. 



Zygospira deflecta Hall. Trenton (Ord.). 



Atrypa deflecta Hall, Pal. New York, I, 1847, p. 140, pi. 33, fig. 4. 



Zygospira deflecta Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 157. 



Loc. Lewis County, New York ; Ottawa, Canada. 



Zygospira exigua (Hall). Trenton (Ord.). 



Atrypa exigiia Hall, Pal. New York, 1, 1847, p. 141, pi. 33, fig. 6. 



Genus ? exigua Hall, Twelfth Rep. N. Y. State Cab. Nat. Hist., 1859, p. 66. 



Protozyga exigua Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 149, figs. 



137, 138, pi. 54, figs. 47, 48. 

 Loc. Lowville, Watertown, and Martinsburg, New York. 

 Zygospira erratica Davidson =Catazyga erratica. 

 Zygospira headi Hall=Catazyga headi. 



Zygospira kentuckiensis James. Lorraine (Ord.). 



Zygospira modesta var. kentuckiensis James, The Paleontologist, 1878, p. 7. 

 Zygospira kentuckiensis Ncttelroth, Kentucky Fossil Shells, Mem. Kentucky 

 Geol. Survey, 1889, p. 138, pi. 34, figs. 21-25.— Hall and Clarke, Pal. New 

 York, VIII, Pt. II, 1895, pi. 54, figs. 11, 15, 16. 

 Loc. Oldham and Jeft'erson counties, Kentucky. 



Zygospira (?) mica (Billings). Anticosti (Sil.). 



Rhyncbonclla mica Billings, Cat. Sil. Foss. Anticosti, 1866, p. 44. 

 Zygospira ? mica Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 157. 

 Loc. Division 4 of the Anticosti group, Anticosti. 



Zygospira (?) minima Hall. Niagara (Sil.). 



Zygospira minima Hall, Descrip. n. sp. Foss. Waldron, Indiana, 1879, p. 14;— 



Eleventh Rep. Indiana State Geologist, 1882, p. 305, pi. 27, fig. 7;— Trans. 



Albany Institute, X, 1883, p. 70. 

 Loc. Waldron, Indiana. 



Zygospira modesta Hall. Utica and Lorraine (Ord.). 



Atrypa modesta (Say) Hall, Pal. New York, I, 1847, p. 141, pi. 15, fig. 15;— Thir- 

 teenth Rep. N. Y. State Cab. Nat. Hist., 1860, p. 69. 



Zygospira modesta Hall, Fifteenth Rep. N. Y. State Cab. Nat. Hist., 1862, p. 

 154 ;— Twentieth Rep. Ibidem, 1867, p. 267, figs. 1, 2.— Meek, Pal. Ohio, 1, 1873, 

 p. 125, pi. 11, fig. 4.— Miller, Cincinnati Quart. Jour. Sci., II, 1875, j). 58.— 

 Davidson, Suppl. British Sil. Brachiopoda, Pal. Soc, 1882, p. 122.— Wiuchell 



