soHccHERT] INDEX AND BIBLIOGRAPHY. 273 



Nucleospira concinna Hall. Coiiiiferous-IIaiiiilton (I)ev.). 



Atrvpa coiicimia Hall, Geol. N. Y. ; Kep. Fourth Dist., ISi'.i, p. liOO, fig. 3. 



Nucleospira concinna Hall, TwcH'th K'cp. N. Y. State Cab. Nat. Hist., \H'>[), pp. 

 25, 20;— Pal. Now York, IV, 18(57, i». 27!t, pi. 45, tigs. 33-57.— Davidson, Suppl. 

 Britisii Silurian Bracli., Paln-outograpliical Society, 1882, p. 121. — \\'alcott, 

 Mon. U. S. (!eol. Survey, VIII, 1881, p. 117.— Nettelrotb, Kentucky Fossil 

 Shells, Mem. Kentucky Oeol. Survey, 1889, p. 103, pi. .32, ligs. 1-4.— Hall and 

 Clarke, Pal. New York, VIII, Pt. II, 1893, p. 145, fig. 131; pi. 48, figs. 12-17, 

 19-34; pi. 84, fig. 38. 



Loc. Moscow, Darien, etc.. New York; Monroe County, Pennsylvania; Tlied- 

 ford, Ontario; Hardy County, Virginia; Columbus, Ohio; Falls of Ohio; 

 Lone Mountain, Nevada. 



Nucleospira elegans Hall. ? Niagara and L. Helderberg (Sil. and Dev,). 



.\ucleosi)ira elegans Hall, Pal. New York, III, 1859, p. 222, pi. 28B, figs. 10-15.— 

 Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Survey, 1889, p. 

 104.— Hall and Clarke, Pal. New York, VIII, Pt. II, 1895, pi. 48, figs. 8-11. 



Loc. Cherry Valley, New York; Cumberland, Maryland. In the Niagara near 

 Louisville, Kentucky (Nettelroth). 



Nucleospira indianensis Miller=Parazyga liirsuta. 



Nucleospira pisiformis Hall, Niagara (Sil.). 



Orthis pisum Hall (non Sowerby), Pal. New Y'ork, II, 1852, p. 250, pi. 2, fig. 1. 



Nucleospira pisiformis Hall, Pal. New York, III, 1859, pi. 28B; — Trans. Albany 

 Institute, IV, 18G3, p. 22G;— Twenty-eighth Rep. N. Y. State Mus. Nat. Hist., 

 1879, p. 160, pi. 25, figs. 22-28;— Eleventh Kep. State Geol. Indiana, 1882, p. 

 301, pi. 25, figs. 22-28.— Kayser, Richtliofens China, IV, 1883, p. 47, pi. 4, 

 figs. 9-11. — Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Sur- 

 vey, 1889, p. 104, pi. 33, figs. 7-9.— Keyes, Geol. Survey Missouri, V, 1895, p. 

 94, pi. 41, fig. 5. 



Loe. Wolcott, New York; Waldron, Indiana; Louisville, Kentucky; Pike 

 County, Missouri ; Tshau-Tien, China. 



Nucleospira rotundata Whitlield. Waterlime (Sil.), 



Nucleospira rotundata Whitfield, Ann. New Y'ork Acad. Sci., II, 1882, p. 194; — 



Ibidem, V, 1891, p. 511, pi. 5, figs. 11-14;— Geol. Ohio, VII, 1895, p. 413, pi. 1, 



figs. 11-14. 

 Loc. Greenfield, Ohio. 



Nucleospira ventricosa Hall. Lower Helderberg (Dev.). 



Spirifcr ventricosa Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 57. 

 Nucleospira ventricosa Hall, Pal. New York, III, 1859, p. 220, pi. 14, fig. 1; pi. 



28B, figs. 2-9.— Hall and Clarke, P*al. New York, VIII, Pt. II, 1893, p. 145, 



tigs. 128-130; pi. 48, figs. 2-6, 18; pi. 84, figs. 39, 40. 

 Loc. Schoharie, Cherry Valley, etc., New York; Cumberland, Maryland. 



OBOLELLA Billings. Genotype O. cliromatica Billings. 



Obolella Billings, Geol. Vermont, II, 1861, p. 946;— Pal. Fossils, I, 1861, p. 7.— 

 Hall, Sixteenth Kep. N. Y. State Cab. Nat. Hist., 1863, p. 131.— Meek and 

 Hayden, Smithsoni.an Cont. to Knowledge, XIV, 172, 1864, p. 3.^Hall, Trans. 

 Albany Institute, V, 1867, )>. 108. — Dall, American Jour. Conchology, VI, 

 1870, pp. 162, 164.— Billings, Canadian Nat. Geol., n. ser., VI, 1871, p. 217, 

 figs. 5, 6; — American Jour. Sci., 3d ser.. Ill, 1872, p. 355, figs. 5-7; — Ibidem, 

 3d ser., XI, 1876, p. 176.— Ford, Ibidem, 3d s<'r., XXI, 1881, p. 131.— Walcott, 

 Bull. U. S. Geol. Survey, 30, 1886, j). 109.— Hall and Clarke, Pal. New York, 

 VIII, Pt. 1, 1892, pp. 66, 164 ;— Eleventh Ann. Rep. N. Y. State (Jeologist, 1894, 



Bull. 87 18 



