BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 295 



Cryptolithus bellulus (Ulrich). 



Trinucleus bellulus Ulrich, Jour. Cincinnati Soc. Nat. Hist., 1, 1878, p. 99, pi. 4, 



fig. 15. 

 Eden: Covington, Kentucky, and vicinity (Economy); New York (Indian 



Ladder). 

 Holotype.C&t. No. 41876, U.S.N.M. 



Cryptolithus bigsbii Green. Not recognized. 



Cryptolithus Bigsbii Green, Mon. Tril. N. Amer. 1832, p. 76. 

 Ordovician: Montmorency, near Quebec, Ontario. 



Cryptolithus boliviensis (Lake). 



Trinucleus boliviensis Lake, Quart. Jour. Geol. Soc. London, 62, 1906, p. 427, pi. 



40, figs. 4, 5. 

 Ordovician: Near Apolo, Bolivia. 



Cryptolithus kruegeri (Hoek). 



Trinucleus kruegeri Hoek, Neues Jahrb. Min., Geol., Pal., 34, 1912, p. 236, pi. 10, 



figs. 7, 8. 

 Ordovician: Cochabamba, Bolivia. 



Cryptolithus tessellatus Green. 



Cryptolithus tessellatus Green, Mon. Tril. North Amer., 1832, p. 73, cast 38, pi. 1, 

 fig. 4; Monthly Amer. Jour. Sci., 1, 1832, pi. 1, fig. 4. Conrad, Amer. Jour. 

 Sci., 38, 1840, p. 91, footnote. Vanuxem, Nat. Hist. New York, Geol., 3, 

 1842, p. 48. Locke, Proc. Acad. Nat. Sci. Philadelphia, 1, 1842, pp. 196, 236, 

 fig. Rouault, Bull. Soc. Geol. France, 2d ser., 6, 1849, p. 83. Foerste, Bull. 

 Sci. Lab. Denison Univ., 14, 1910, p. 78 (gives history of genus and species); 

 17, 1914, p. 317. 



Trinucleus tessellatus Einmons, Nat. Hist. New York, Geol., 2, 1842, pp. 115, 390, 

 391, fig. 7. Owen, Amer. Jour. Sci., 47, 1844, pp. 363, 364, fig. 7. 



Nuttainia concentrica Eaton, Geol. Textb., 2d ed., 1832, p. 34, pi. 1, fig. 2. 

 Green, Mon. Tril. North Amer., 1832, p. 76. 



Trinucleus caractaci Emmons, Nat. Hist. New York, Geol., 2, 1842, p. 403, fig. 1. 

 Owen, Amer. Jour. Sci., 47, 1844, p. 377, 378. De Verneuil, ibid., 2d ser., 7, 

 1849, p. 223. Emmons, Man. Geol., 1860, p. 103, fig. 93. 



Trinucleus concentricus Hall, Pal. New York, 1, 1847, p. 249, pi. 65, figs. 4a, c; 

 p. 255, pi. 67, figs. la-h. Salter, Mem. Geol. Surv. United Kingdom, dec. 7, 

 1853, p. 51, pi. 7. Emmons, Amer. Geol., 1, pt. 2, 1855, p. 212, pi. 15, fig. 

 4a, b; pi. 16, fig. 7; pi. 17, fig. 1. Chapman, Canadian Jour., n. s., 1, 1856, 

 p. 273; 3, 1858, p. 514, fig. Rogers, Geol. Pennsylvania, 2, pt. 2, 1858, p. 

 820, fig. 611. Lincklaen, 14th Rep. New York State Cab. Nat. Hist., 1861, 

 p. 47, pi. 3, fig. 5; pi. 4, fig. 12. Hitchcock, Geol. Vermont, 1, 1861, p. 300, fig. 

 215. Billings, Geol. Canada, Geol. Surv. Canada, 1863, p. 190, fig. 191a, b. 

 Chapman, Canadian Jour., n. s., 8, 1863, p. 2, fig. 139; p. 200, fig. 195; Expos. 

 Min. Geol. Canada, 1864, p. 136, fig. 139; p. 172, fig. 195. Salter, Mem. Geol. 

 Surv. Great Britain, 3, 1866, p. 320, pi. 19, fig. 4; Cat. Camb. Sil. Foss., 1873, 

 p. 49. Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 126. Walcott, Bull. 

 Mus. Comp. Zool., 8, 1881, p. 199. Salter, Mem. Geol. Surv. Great Britain, 

 3, 2d ed., 1881, p. 517, pi. 19, fig. 4. Miller, N. A. Geol. Pal., 1889, p. 569, 

 fig. 1063. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1223, fig. 

 Beecher, Amer. Jour. Sci., 3d ser., 49, 1895, p. 309, pi. 3, figs. 1-6. Weller, 

 Geol. Surv. New Jersey, Pal., 3, 1903, p. 192, pi. 14, figs. 3, 4. Cumings, 32d 

 Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 1064, pi. 44, fig. 11. Bassler, 

 Bull. Geol. Surv. Virginia, 2a, 1909, pi. 7, fig. 3. Grabau and Shinier, N. A. 

 Index Fossils, 2, 1910, p. 259, fig. 1547. 



