CATALOGUE OF TRILOBITES. 255 



Boeckia Brogger, 1882. Die silurischen Etagen 2 uud 3, p. 122. Type, 

 Bceckia hlrsuta Brogg. Taconic. 



Ceratopyge Corda, 1847. Prodr., p. 161. Type, Olenus forficula Sars. 



Taconic. 



CONOCORYPHID^:. 



Atops Emmons, 1844. Tacoiiic System, p. 20. Type, Tr Mobile sulzeri 



Schloth. Taconic. 



Ptychoparia Corda, 1847. Prodr., p. 26. Type, Conocephalus striatu* 



Emm. Taconic. Cambrian. 



Ctenocephalus Corda, 1847. Prodr., p. 26. Type, Ctenocephalus barrandi 



Cord. Taconic. 



Solenopleura Angeliu, 1854. Palaeont. Scand., p. 26. Type, Solenopleura 



holometoj>a Ang. Taconic. 



Liostracus Angeliu, 1854. Palreont. Scaud., p. 27. Type, Liostracus 



aculeatus Ang. Taconic. 



Aneuacauthus Angelin, 1852. Palasont. Scand., p. 5. Type, Aneuacan- 



thus acutangulus Ang. 

 Anomocare Angelin, 1854. Palaeont. Scand., p. 24. Type, Anomocare 



aculeatus Ang. Taconic. 



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



Type, Angelina sedgwicki Salt. Taconic. 



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



Taconic. 

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



Olenoides nevadensis Meek. Taconic. 



Bathyurus Billings, 1859. Canadian Naturalist, vol. 4, p. 364. Type, 



Asajthus extans Hall. Cambrian. 



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



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



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



Hist., p. 175. Type, Chariocephalus whitfieldi Hall. Taconic. 



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



spinulosa Ang. Taconic. 



Ellipsocephalus Zenker, 1833. Beitrage Nat. Urwelt, p. 31. Type, Ellip- 



socephalus ambiguus Zenker=Ellipsocephalus hoffi Schloth. Taconic. 

 Ptychaspis Hall, 1863. Sixteenth Rep. New York State Cab. Nat. Hist., 



p. 170. Type, Dikelocephalus minisccensis Owen. Taconic. 



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



Sao hirsuta Barr. Taconic. 



BOHEMILLID.E. 



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

 Type, BohemiUa stupenda Barr. Cambrian. 



GALTMKMIOJE. 



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

 culata Briinn. Cambrian. Silurian. 



