CATALOGUE OF TRILOBITES. 289 



Ceraurds Green, 1832; Monthly Am. Jour. Geol., vol. 1, p. 560, pi., fig. 6. 

 Mon. Tril. N. A., p. 83, cast 33, pi., fig. 10. 



Hall, 1847; Pal. New York, vol. 1, p. 242. 



Syn., Otarion (in part) Zeuk., 1833; BeitrilgeNat. Urwelt, p. 44. 



Argen (iu part) Goldf., 1843; Neues Jahrbi;cli fiir Mineral, p. 5. 

 Cyphanins (iu part) Burm., 1843; Org. Trilobiten, p. 104. 

 Amjihion (in part) Portl., 1843; Geol. Snr. Londonderry, p. 272. 

 Cyphaspis (in part) McCoy, 1846; Sil. Foss. Ireland, p. 44. 

 Cheirurus Beyr., 1846; Uuters. Trilobiten, etc., II, p. 3. 

 Eccoplochile Cord., 1847; Prodr., p. 245. 

 Aciinopeltefs Cord., 1847; Prodr., p. 247. 



Croialocephalus Salt., 1853; Mem. Geol. Survey United King- 

 dom, decade 7, pi. 2, p. 10. 

 Ci/riomeiop us Aug., 1854; Pal. Scaud., p. 32. 

 Sphcerocoryphe Aug., 1854; Pal. Scand., p. 65. 

 Pseudopharoxochus Scbm., 1881; Kev. Baltic Sil. Tril., p. 130. 

 Nieszkowskia ^chm.., 1881; Eev. Baltic Sil. Tril., p. 130. 

 Cheirurus appollo Bill., 1860; Canadian Nattiralist, vol. 5, p. 322, 



fig. 28. Point Levis, Quebec. Limestone No. 2. 

 Cheirurus appollo Bill., 1865; Pal. Foss., vol. 1, p. 413, fig. 397. 

 Cheirurus bimucronaius (Murch.) Eoemer, Die Sil. Fauua W. Tenu., 

 p. 80, pi. 5, fig. 19. Not Murchisou's species. (See Ceraurus 

 niagarensis Hall.) 

 crosotus Lock. (See Acidasjns crosotus.) 



Cheirurus eryx Bill., 1860; Canadian Naturalist, vol. 5, p. 322, fig. 

 .30. Point Levis, Quebec. Limestone No. 2, also Phillipsburgli. 

 Cheirurus eryx Bill., 1865; Pal. Foss., vol. 1, p. 413, fig. 399. 

 Cheirurus glaucus Bill., 1865; Pal. Foss., vol. 1, p. 323, fig. 308. 



Stanbridge Eange 6, lot 20, Canada. 

 Cheirurus icarus Bill., 1860; Canadian Naturalist, vol. 5, p. 67, fig. 

 14. Anticosti. Hudson. 



Cheirurus icarus Bill., 1863; Geol. Canada, p. 219, fig. 231. 



ICARUS Meek, 1873; Pal. Ohio, vol. 1, p. 162, pi. 14, fig. 11 a, b, c. 



ICARUS Miller, 1874; Cincinnati Quart. Jour. Sci., vol. 1, p. 133. 



Cheirurus insignis (Beyr.) Hall, 1852; Pal. NeM' York, vol. 2, p. 300; 

 also p. 306, pi. 67, figs. 9, 10. Not Beyrich's species. 



insignis. (See Ceraurus niagarensis Hall.) 



MERCuRius Bill, 1865; Pal. Foss., vol. 1, p. 285, fig. 272. Cow Head, 



N. F. 



NiAGARENSis Hall, 1867; 20th Eep. New York State Cab. Nat. Hist., 



p. 376, pi. 21, fig. 10. Wauwatosa, Wis. Niagara. 



NIAGARENSIS Hall, 1870; 20th Rep. New York State Cab. Nat. Hist. 



(2d ed.), p. 427, pi. 21, figs. 10, 11. 

 Syn., Sphcerexochus romingeri'i Hall; Doc. Ed. 28th Ecp. New York 

 State Mus. Nat. Hist. Explanation of pi. 32, fig. 16 (erroneous 

 reference). 

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