858 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Nipterella paradoxica (Billings). 



Calatliium? paradoxicum Billings, Pal. FOBS., 1, Geol. Surv. Canada, 1865, p. 



358, fig. 345. Bornemann, Verstein. Cambr. Sardin., N. Act. Leop. Car. Akad. 



Naturf., 51, 1886, p. 33. 

 Nipterella paradoxica Hinde, Quart. Jour. Geol. Soc. London, 45, 1889, p. 144, 



pi. 5, fig. 15; Canadian Rec. Sci., 3, 1889, p. 374. Rauff, Palseontographica, 



40, 1894, p. 241, pi. 1, figs. 11-14. 

 Canadian (Romaine) : Mingan Island, Canada. 



NUCLEOSPIRA Hall. Genotype: Spirifer ventricosa Hall. 



Nucleospira Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, p. 24; Pal. 

 New York, 3, 1859, p. 219; ibid., 4, 1867, p. 278. Zittel, Handb. Pal., 1, 

 1880, p. 685. Davidson, Mon. British Foss. Brach., 5, Sil. Suppl.; Pal. Soc., 

 1882, pp. 82, 91. Miller, N. A. Geol. Pal., 1889, p. 355. Nettelroth, Ken- 

 tucky Fossil Shells, Mem. Kentucky Geol. Surv., 1889, p. 103. Hall and 

 Clarke, Pal. New York, 8, pt. 2, 1893, p. 142; 13th Ann. Rep. New York 

 State Geol., 1895, p. 806. Koken, Die Leitfossilien, Leipzig, 1896, p. 240, 

 fig. 200, 6, 7. Grabau, Bull. Buffalo Soc. Nat. Sci., 6, 1899, p. 222. Grabau 

 and Shimer, N. A. Index Fossils, 1, 1907, p. 349. Schuchert, Zittel-Eastman 

 Textb. Pal., 1900, p. 338; ibid, 1913, p. 415. 



Nucleospira concentrica Hall. 



Nucleospira concentrica Hall, Pal. New York, 3, 1859, p. 223, pi. 28B, figs. 15-19. 

 Hall and Clarke, ibid., 8, pt. 2, 1895, pi. 48, fig. 7. Foerste, Jour. Geol., 11, 

 1903, p. 709 (loc. occ.). 



Niagaran (Brownsport) : Decatur County, Tennessee. 



Nucleospira elegans Hall. 



Nucleospira elegans Hall, Pal. New York, 3, 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, 8, pt. 2, 1895, pi. 48, figs. 8-11. 

 Schuchert and Maynard, Maryland Geol. Surv., Low. Dev., 1913, p. 431, 

 pi. 73, figs. 13, 14. 



Helderbergian: Cherry Valley, New York (New Scotland); Cumberland, Cash 

 Valley, etc., Maryland (Keyser); (?)Niagaran at Louisville, Kentucky. 



Pksiotypes Cat. No. 51324, U.S.N.M. (Nettelroth). 



Nucleospira pisiformis Hall. 



Orthis pisum Hall (not Sowerby) Pal. New York, 2, 1852, p. 250, pi. 2, fig. 1. 

 Nucleospira pisiformis Hall, Pal. New York, 3, 1859, pi. 28B; Trans. Albany Inst., 



4, 1863, p. 226; 28th Rep. New York State Mus. Nat. Hist., 1879, p. 160, pi. 

 25, figs. 22-28; llth Rep. State Geol. Indiana, 1882, p. 301, pi. 25, figs. 22-28.- 

 Davidson, Mon. British Foss. Brach., 5, Sil. Suppl., Pal. Soc., 1882, p. 

 92. Kayser, Richthofens China, 4, 1883, p. 47, pi. 4, figs. 9-11. Nettelroth, 

 Kentucky Fossil Shells, Mem. Kentucky Geol. Surv., 1889, p. 104, pi. 33, 

 figs. 7-9. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 468, figs. 

 Miller, N. A. Geol. Pal., 1889, p. 355, fig. 587. Keyes, Geol. Surv. Missouri, 



5, 1895, p. 94, pi. 41, fig. 5. Kindle and Breger, 28th Ann. Rep. Dcp. Geol. 

 Nat. Res. Indiana, 1904, p. 444, pi. 8, fig. 29. Grabau and Shimer, N. A. 

 Index Fossils, 1, 1907, p. 349, fig. 453. 



Niagaran: Wolcott, New York (Clinton); Waldron, etc., Indiana (Osgood and 



Waldron); Louisville, Kentucky; Tennessee; Missouri. 

 Plesiotypes.Czt. No. 51367, U.S.N.M. (Nettelroth). 



NUCLEOSPIRA ROTUNDATA Whitfield. See Whitfieldella rotundata. 



