22 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



AGNOSTUS Brongniart. Genotype: Entomolitus paradoxus pisiformis Linnaeus. 



Agnostus Brongniart, Hist. Crust. Foss., 1822, p. 38. DeKay, Ann. Lyceum Xat, 

 Hist. New York, 1, 1824, p. 176, -footnote. Green, Mon. Tril. N. A., 1832, 

 p. 17. Murchison, Sil. Syst, 1839, p. 664. Edwards, Hist. Nat. d. Crus- 

 tacea, 3, 1840, p. 347. Goldfuss, Neues Jahrb. f. Min., etc., 1843, p. 541. 

 Pictet, Traite de Pal., 2d ed., 2, 1854, p. 526. Salter, Mem. Geol. Surv. 

 United Kingdom, dec. 11, 1864, pi. 1. Salter, Mem. Geol. Surv. Great 

 Britain, 3, 1866, p. 296 (ibid., 2d ed., 1881, p. 488). BrSgger, Nyt Mag. for 

 Naturvid., 24, 1877, p. 61. Angelin, Tal. Scandinavica, 3d ed., Holmise, 

 1878, p. 5. Tullberg, Sveriges, Geol. tinders., Ser. C, No. 42, 1880, p. 11. 

 Zittel, Handb. Pal., 2, 1885, p. 592. Matthew, Trans. Royal Soc. Canada, 3, 

 sec. 4, 1886, p. 67. Miller, N. A. Geol. Pal., 1889, p. 526. Vogdes, Amer. 

 Geol., 9, 1892, pp. 377-383; Cal. Acad. Sci., Occ. Papers, 4, 1893, p. 262. 

 Beecher, Amer. Jour. Sci., 3d ser., 46, 1893, p. 143; Amer. Geol., 16, 1895, p. 

 175. Matthew, Trans. New York Acad. Sci., 15, 1896, p. 207. Koken, Die 

 Leitfossilien, Leipzig, 1896, p. 14, fig. 6. Beecher, Amer. Jour. Sci., 4th ser., 

 3, 1897, pp. 104, 183, pi. 3, fig. 9. Matthew, Trans. Royal Soc. Canada, 2d 

 ser. 3, sec. 4, 1897, p. 170. Lindstrom, Kongl. Sven. Vet.-Akad. Handl., 

 34, No. 8, 1901, pp. 10, 37, pi. 1, fig. 7. Matthew, Amer. Geol., 27, 1901, p. 

 56. Gronwall, Danmarks Geol. Unders., 2, Rsekke, No. 13, 1902, p. 46. 

 Jaekel, Zeit. d, Deutsch. Geol. Gesell., 61, 1909, p. 380. Raymond, Zittel- 

 Eastman Textb. Pal., 1913, p. 710. 



Agnostus acadicus declivus Matthew. 



Agnostus Acadicus var. declivis Matthew, Trans. Royal Soc. Canada, 3, sec. 4, 



1886, p. 70, pi. 7, figs. 6a, b. Vogdes, Amer. Geol., 9, 1892, p. 387, pi. 9, fig. 



8. Matthew, Trans. New York Acad. Sci., 15, 1896, p. 219, pi. 15, figs, lla-d. 

 Agnostus cf. declivis Matthew, Geol. Surv. Canada, Rep. Cambrian Rocks Cape 



Breton, 1903, p. 223. 

 Canadian (Bretonian Div. C. 3b): McNeil Brook, Cape Breton, Nova Scotia. 



Agnostus americanus Billings. 



Agnostus Americanus Billings, Canadian Nat. Geol., 5, 1860, p. 302, fig. 1 a, b; 

 Geol. Canada, Geol. Surv. Canada, 1863, p. 233, figs. 250 a, b; Pal. Foss. 1, 

 Geol. Surv. Canada, 1865, p. 395, fig. 372 a, b. Nicholson and Etheridge, 

 Mon. Sil. Foss. Girvan Dist., 1880, p. 298. 



Ozarkian? (Levis erratic): Point Levis, Quebec. 



Agnostus bisectus Matthew. 



Agnostus bisectus Matthew, Trans. Royal Soc. Canada, 9, sec. 4, 1892, p. 50, pi. 



13, figs. 2 a, b. 

 Canadian (Bretonian Div. C. 3b): Navy Island, St. John, New Brunswick. 



Agnostus bolivianus Hoek. 



Agnostus bolivianus Hoek, Neues Jahrb. Min., Geol., Pal., 34, 1912, p. 212, pi. 



7, fig. 6. 

 Lowest Ordovician: Salitre, Bolivia- Argentina boundary. 



Agnostus canadensis Billings. 



Agnostus Canadensis Billings, Canadian Nat. Geol., 5, 1860, p. 304, fig. 3 a, b; 

 Geol. Canada, Geol. Surv. Canada, 1863, p. 233, fig. 252 a, b; Pal. Fos., 1, 

 Geol. Surv. Canada, 1865, p. 397, fig. 374 a, b. Brogger, Geol. Foren. Stock- 

 holm Forhandl., 8, 1886, p. 207. Vogdes, Amer. Geol., 9, 1892, p. 390, pi 

 9, fig. 9. 



Ozarkian? (Levis erratic): Point Levis, Quebec. 



