632 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



HOMALONOTUS Continued. 



Geol. Pal., 1889, p. 550. Koken, Die Leitfossllien, Leipzig, 1896, p. 23, 

 fig. 14, figs. 4-6. Grabau, Bull. Buffalo Soc. Nat. Sci., 6, 1899, p. 312; ibid., 



7, 1901, p. 221. Beecher, Zittel-Eastman Textb. Pal., 1, 1900, p. 635. Lind- 

 strom, Kongl. Sven. Vet.-Akad. HandL, 34, No. 8, 1901, p. 57. Grabau, 

 Bull. New York State Mus., 45, 1901, p. 221. Woodward, Geol. Mag., dec. 4, 

 10, 1903, p. 20. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 316. 

 Raymond, Zittel-Eastman Textb. Pal., 1913, p. 724. 



Trimerus Green, Tril. North America, 1832, p. 81. Salter, Mon. British Tril., Pal. 

 Soc., 1865, p. 104. Zittel, Handb. Pal., 2, 1885, p. 605. Koken, Die Leit- 

 fossilien, Leipzig, 1896, p. 23. Clarke, Arch. Mus. Nac. Rio de Janeiro, 9, 

 1890, p. 10, footnote. Raymond, Zittel-Eastman Textb. Pal., 1913, p. 724. 



Dipleura Green, Mon. Tril. North America, 1832, p. 78. Salter, Mon. British Tril. , 

 Pal. Soc., 1865, p. 105. Zittel, Handb. Pal., 2, 1885, p. 605. Koken, Die 

 Leitfossilien, Leipzig, 1896, p. 23. Beecher, Amer. Jour. Sci., 4th ser., 3, 

 1897, p. 105, pi. 3, fig. 27. Clarke, Arch. Mus. Nac. Rio de Janeiro, 9, 1890, 

 p. 10, footnote. Raymond, Zittel-Eastman, Textb. Pal., 1913, p. 724. 



Brongniartia Eaton, Geol. Textb., 1832, p. 32, pi. 2, fig. 20; Amer. Jour. Sci., 22, 

 1832, p. 165. Edwards, Hist. Nat. d. Crust., 3, 1840, p. 346. Salter, Mon, 

 British Tril., Pal. Soc., 1865, p. 104. Zittel, Handb. Pal., 3, 1885, p. 605. 

 Koken, Die Leitfossilien, Leipzig, 1896, p. 23. 



Brongniatia Green, Mon. Tril. North America, 1832, p. 90. 



HOMALONOTUS ATLAS Castelnau. See Homalonotus delphinocephalus. 



Homalonotus? bistrami Hoek. 



Homalonotus bistrami Hoek, Neues Jahrb. Min., Geol. Pal., 34, 1912, p. 249, pi. 



8, figs. 19, 20. 

 Ordovician: Cochabamba, Bolivia. 



A Homalonotus dawsoni Hall. 



Homalonotus dawsoni Hall, Canadian Nat. Geol., 5, 1860, p. 155, fig. 17. Dawson, 



Acad. Geol., 2d ed., 1868, p. 606, fig. 214; Canadian Nat. Geol., 5, I860, p. 



298, fig. 1; Acadian Geol., Suppl. Chap., 1860, p. 57, footnote; p. 68, fig. C3; 



ibid., 2d ed., 1878, p. 77, fig. 14; Geol. Mag., dec. 2, 4, 1877, p. 57, fig. 2. 

 Silurian (Moydart, Stonehouse): Arisaig, Nova Scotia. 



Homalonotus delphinocephalus (Green). 



Trimerus delphinocephalus Green, Mon. Tril. North America, 1832, p. 82, pi. 

 fig. 1. Harlan, Trans. Geol. Soc. Pennsylvania, 1, pt. 1, 1834, p. 105.- 

 Raymond, Zittel-Eastman Textb. Pal., 1913, p. 724, fig. 1402. 



Brongniartia platycephala Harlan, Trans. Geol. Soc. Pennsylvania, 1, pt. 1, 1! 

 p. 105. 



Homalonotus atlas Castelnau, Ess. Syst. Sil. FAmer. Sept., 1843, p. 20, pi. 4, fig. 



Homalonotus giganteus Castelnau, ibid., p. 20, pi. 3, fig. 1. 



Homalonotus herculaneus Castelnau, ibid., p. 20, pi. 4, fig. 5. 



Ogygies latissimus Eaton, Amer. Jour. Sci. and Arts, 21, 1832, p. 136. 



Homalonotus delphinocephalus Murchison, Sil. Syst., 1839, p. 651. Hall, G( 

 New York, pt. 4. 1843, p. 103, fig. 34, tab. org. rem., 11, fig. 1. Owen, Aim 

 Jour. Sci. Arts, 48, 1845, p. 307, pi. 34, p. 311. Hall, Pal. New York, 2, 

 p. 104, pi. 31, figs. 5a-b; p. 309, pi. 68, figs. 1-14. Billings, Canadian Nat 

 Geol., 1, 1856, p. 320, fig. 10. Lincklaen, 14th Rep. New York State Cs- 

 Nat. Hist., 1861, pi. 8, fig. 4. Hall, Trans. Albany Inst., 4, 1863, p. 227.- 

 Billings, Geol. Canada, Geol. Surv. Canada, 1863, p. 319, fig. 339. Chapi 

 Canadian Jour., n. s., 8, 1863, p. 32, fig. 148; p. 212, fig. 222; Expos. 



