CATALOGUE OF TRILOBITES. 255 



Bceckia Brogger, 1882. Die silurischeu Etageii 2 uud 3, p. 122. Type, 

 Bieckia hirsuia Brogg. Taconic. 



Ceratopyge Corda, 1847. Prodr., p. 1(51. Type, Olenus forficula Sars. 



Tacouic. 



CONOCORYPIIID^'E. 



Atops Emmons, 1844. Taconic System, p. 20. Type, Trilohite sulzeri 



Schloth. Taconic. 



Ptychoparia Corda, 1847. Piodr., j). 26. Type, Conocephalus striatus 



Emm. Taconic. Cambrian. 



Ctenocephalns Corda, 1847. Prodr., p. 26. Type, Ctenocephalus harrandi 



Cord. Taconic. 



Solenopleura Angelin, 1854. PaliBont. Scand., p. 26. Type, Sole7iopleu7-a 



holometopa Ang. Taconic. 



Liostraciis Angelin, 1854. Palreont. Scaud., p. 27. Type, Lioslracus 



aculeatus Ang. Taconic. 



Aneuacanthns Angelin, 1852. Palteont. Scand., p. 5. Type, Aneuacan- 



thus acutangulus Ang. 

 Anomocare Angelin, 1854. Palieont. Scaud., p. 24. Type, Anomocare 



aculeatus Ang. Taconic. 



Angelina Salter, 1847. Mem. Geol. Survey United Kingdom, decade xi. 



Type, AiKjelina sedgivicki Salt. Taconic. 



Agraulos Corda, 1847. Prodr., p. 26. Agraulus ceriicephalus Barr. 



Tacouic. 

 Olenoides Meek, 1877. U. S. Geol. Expl. 40th Par., vol. 4, p. 25. Type, 



Olenoides nevade.iisis Meek. Taconic. 



Bathyurus Billing.s, 1859. Canadian Naturalist, vol. 4, p. 364. Type, 



Asaphus extans Hall. Cambrian. 



Bathyurella Billings, 1865. Pal. Foss., vol. 1, p. 262. B. maryhiatus, 



B. nitidus, B. expansus Bill. Taconic. Cambrian. 



Chariocephalus Hall, 1863. Sixteenth Kep. New York State Cab. Nat. 



Hist., p. 175. Type, Chariocephalus whitjieldi Hall. Tacouic. 



Corynexochus Angelin, 1854. Palffiont. Scand., p. 59. Type, Corynexochus 



spinulosa Ang. Taconic. 



EUipsocephalus Zenker, 1833. Beitriige Nat. Urwelt, p. 31. Type, ElUp- 



socephalus amhiguiis ZenheT^Ellipsocephalus hoffi Schloth. Tacouic. 

 Ptychaspia Hall, 1863. Sixteenth Eep. New York State Cab. Nat. Hist., 



p. 170. Type, Dikelocephulus m>nisc(V7isis Owen. Tacouic. 



Sao Barrande, 1846. Notice Prelim. Syst. Sil. Boheme, p. 13. Type, 



Sao hirsuta Barr. ^ Taconic. 



BOHEMILLID^. 



Boherailla Barrande, 1872. Syst. Sil. Boheme, vol. 1, Suppl., p. 137. 

 Type, Bohemilla siupenda B&rr. Cambrian. 



CALYMENIDiE. 



Calymene Brougniart, 1822. Crust. Foss., p. 11. Type, Calymene tuber- 

 culata Briinn. Cambrian. Silurian. 



