CATALOGUE OF TRILOBITES. 359 



TRIAKTHRUS. TRINUCLEUS. 



beckii Mather, 1842; Geol. New York, 1st Geol. Dist., p. 390, fig. 24 (1). 



beckii Emmons, 1842; Geol. New York, 2d Geol. Dist., p. 399, fig. 



110 (1). 



beckii Yannxem, 1843; Geol. New York, 3d Geol. Dist., p. 57, fig. 8(1). 



beckii Hall, 1843; Geol. New York, 4th Geol. Dist., p. 504. 



Calymene beckii Hall, 1847; Pal. New York, vol. I, p. 237, pi. 64, figs. 



2 a-e. 

 Calymene beckii Hall, 1847; Pal. New York, vol. 1, p. 250, pi. 66, figs. 



2 a-k (not pi. 67, figs. 4 a-e, Atops trilineatus) . 

 Syn., Atops trilineatus (Emmons) Hall, 1847; Pal. New York, vol. 1, p. 



237. 

 Calymene beckii Hall, 1848; Am. Jour. Sci., 2d series, vol. 5, p. 322, 



figs. 1, a, b, 2 a-g. 



beckii Emmons, 1848; Am. Assoc. Adv. Sci., p. 17. 



beckii Haldeman, 1848; Am. Jour. Sci., 2d series, vol. 8, p. 137. 



beckii Emmons, 1855; Am. Geology, vol. 1, pt. 2, p. 214, pi. 15, fig. 12. 



Calymene beckii Rogers, 1858; Geol. Survey Penn., vol. 2, p. 820, 



fig. 613. 

 beckii Barr., 1861; Soc. Geol. France, 2d series, p. 269, pi. 5, figs. 



11, 12. 



beckii Logan, 1863; Geol. Canada, p. 202, fig. 200. 



beckii Miller, 1874; Cincinnati Quart. Jour. Sci., vol. 1, p. 146. 



beckii Wal., 1876; Trans. Albany Inst., vol. 10, p. 23, pi. 2, figs. 



1-16. 



CANADENSIS Smith, 1861; Canadian Jour., vol. 6, p. 275, Hudson. 



FiscHERi Bill., 1861; Pal. Foss., vol. 1, p. 291, fig. 280. Table Head, 



Pistolet Bay and Portland Creek, N. F. 

 GLABER Bill., 1859; Canadian Naturalist, vol. 4, p. 382. Lake St. 



Johns, Utica Slate. 



GLABER Bill., 1863; Geol. Canada, p. 202, fig. 198. 



SPiNOSUS Bill., 1857; Geol. Survey Canada Rep. of Progress, 1853-56, 



p. 340. Township of Gloucester, County of Carletou, Canada, 



Utica Slate. 



SPINOSUS Bill, 1859; Canadan Naturalist, vol. 4, p. 383. 



SPINOSUS Bill., 1863; Geol. Canada, p. 202, fig. 199. 



SPINOSXTS Ami, 1882; Trans. Ottawa Nat. Club, vol. for 1882-83, p. 88, 



pi. 1, fig 

 Trimerus Green, 1832; Monthly Am. Jour. Geol., vol. 1, p. 560. (See 



Homalonotus delphinocephalus and H. jacksoni.) 

 Tkinccleus Lhwyd, 1698;Lithophyacii Brittaunici Ichnographia. Epistola 



1. Murch., Silurian System, 1839, p. 659. Sir R. I. Murchison 



has revived this old name of Lhwyd's, and all subsequent paleon- 

 tologist have adopted it. Lhwyd's description meant no more 



than the general name of Trilobite of the more modern writers, 



and could not, except by courtesy, set aside Dr. Jacob Green's 



genus Cryptolithus. 



