856 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



NIESZKOWSKIA Continued. 



Minnesota, 3, pt. 2, 1894, pp. 737-738. Heed, Geol. Mag., dec. 4, 3, 1896, pp. 

 118, 162. Koken, Die Leitfoysili?.n, Leipzig, 1896, p. 35, figs. 7, 7a. Reed, 

 Geol. Mag., dec. 4, 5, 1898, p. 208. Raymond, Annals Carnegie Mus., 3, 

 1905, p. 376; Zittel-Eastman Textb. Pal., 1913, p. 725. 



Nieszkowskia blllingsi (Raymond). 



Cheirurus vulcamis Billings, Pal. FOBS. Canada, 1, 1865, p. 324, fig. 310a-c 



(not p. 271, figs. 271a-c). 

 Pseudosphserexochtis vulcanus billingsi Raymond, Ann. Carnegie Mus., 3, 1905, 



p. 369, pi. 14, fig. 17, text fig. 11; 7th Rep. Vermont State Geol., L9JO, p. 242, 



pi. 36, fig. 17. 

 Chazyan (Valcour): Sloop Bay and Valcour Island, New York; Slanbridge, 



Quebec. 



Nleszkowskia glaucus (Billings). 



Cheirurus Glaucus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 323, figs. 



308a, b. 



Ceraurus (Nleszkowskia) glaucua Clarke, Geol. Minnesota, 3, pt. 2, 1894, p. 738. 

 Chazyan(?): Stanbridge, Quebec. 



Nleszkowskia mars (Hudson). 



Cheirurus mars Hudson, Bull. New York State Mus., 80, 1905, p. 205, pi. 5, 



figs. 1, 2. 



.Nieszkowskia mars Raymond, 7th Rep. Vermont State Geol., 1910, p. 244. 

 Chazyan (Valcour): Valcour Island, New York. 



Nieszkowskia perforator (Billings). 



Cheirurus perforator Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 287, 



fig. 275. 

 Ceraurus (Nieszkowskia) perforator Clarke, Geol. Minnesota, 3, pt. 2, 1894, 



p. 738 (gen. ref.). 

 Chazyan (Quebec-N): Table Head, Newfoundland. 



Nieszkowskia satyrus (Billings). 



Cheirurus Satyrus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 324, fig. 309. 

 Ceraurus (Nieszkowskia) satyrus Clarke, Geol. Minnesota, 3, pt. 2, 1894, p. 738. 

 Pseudosphserexochus (Nieszkowskia) satyrus Raymond, Ann. Carnegie Mus., 3, 



1905, p. 371, pi. 14, fig. 21. 

 Nieszkowskia satyrus Raymond, 7th Rep. Vermont State Geol., 1910, p. 224, 



pi. 36, fig. 21. 

 Chazyan (Valcour): Montreal, Quebec; Sloop Island, east of Valcour Maud, 



New York. 



NILEUS Dalman. Genotype: Asaphus (Nilouis) armadillo Dalrnan. 



Niletis Dalman, Svenska Vet.-Akad. Handl., 1826, 1827, pp.246, 276. Dalman- 

 Engelhart, Die Palaeaden, Nurnberg, 1828, p. 49. Green, Mon. Till. N. A., 

 1838, p. 18. Eichwald, Zool. Specialis, pt. 2, Vilnae, 1830, p. 116. Goldfuss, 

 Neues Jahrb. Min., etc., 1843, pp. 540, 551. Burmeister, Org. der Tril., 

 Berlin, 1843, p. 123. Rouault, Bull. Soc. Geol. France, 2d ser., 4, 1847, p. 

 318 Hawle and Corda, Abh. d. k. bohmischen Gesell., d. Wiss., 5, 1847. 

 (extract), p. 52, pi. 4, fig. 35. Angelin, Pal. Scandinavica, 3d ed., Holmiae, 

 1878, p. 18. Barrande, Neues Jahrb. Min., etc., 1850, p. 779. Pictet, Traite 

 de Pal., 2d ed., 2, 1854, p. 516. Salter, Mon. British Tril., Pal. Soc., 1866, 

 pp. 148, 171. Zittel, Handb. Pal., 2, 1885, p. 610. Brogger, Bihang till K. 

 Sven. Vet.-Akad. Handl., 11, No. 3, 1886, p. 64; Afh. Sveriges Geol. Unders., 

 Ser. C, No. 82, 1886, p. 64. Miller, N. A. Geol. Pal., 1889, p. 557. Koken, 



