CATALOGUE OF TRILOBITES. 255 



Bceckia Brogger, 1882. Die silnrischeii Etageu 2 nud 3, p. 122. Type, 

 B<eckia hirsuta Brogg. Tacouic. 



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



Tacouic. 



CONOCORYPHIDiE. 



Atops Emmons, 1844. Tacouic System, p. 20. Type, Tr'dohlie sulzeri 



Sehloth. Tacouic. 



Ptychoparia Corda, 1847. Prodr., p. 26. Type, Coiwcephalus sir/aius 



Emm. Tacouic. Cambriau. 



Ctenocephalus Corda, 1847. Prodr., p. 2fi. Type, Ctciwcepfialu.i harrundi 



Cord. Tacouic. 



Soleuoplenra Angeliu, 1854. Pala^out. Scaud., p. 26. Tyjie, Solenopleura 



holometopa Aug. Tacouic. 



Liostracus Augelin, 1854. Palreout. Scaud., p. 27. Type, Liostracus 



aculeaiufi Aug. Tacouic. 



Aneuacauthus Augeliu, 1852. Palreout. Scaud., p. 5. Type, Anenncan- 



(hus acutangulus Aug. 

 Auomocare Augeliu, 1854. Pahcout. Scaud., p. 24. Type, Anomorare 



acideatiis Aug. ' Tacouic. 



Augeliua Salter, 1847. Mem. Geol. Survey Uuited Kingdom, decade xi. 



Type, Angelina sedgwicki Salt. Tacouic^ 



Agraulos Corda, 1847. Prodr., p. 26. Agraidus certkephalus Barr. 



Tacouic. 

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



Olenoiden nevadensi.i Meek. Tacouic. 



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



Asaphus exlanx Hall. Cambrian. 



Bathj'urella Billiugs, 1865. Pal. Foss., vol. 1, p. 262. B. margmatux, 



B. nitidus, B. expansux Bill. Tacouic. Cambrian. 



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



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



Coryuexochus Angeliu, 1854. Pala>ont. Scaud., p. 59. Type, Corijnexochus 



spmiulosa Aug. Tacouic. 



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



soccphalus ninhigitus Zeii'kev^=Elli))soce})halus hojjl Sehloth. Tacouic. 

 Ptj'chaspis Hall, 1863. Sixteenth Eep. New York State Cab. Nat. Hist., 



p. 170. Type, Di/celocephalits minisccensis Owen. Tacouic. 



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



Sao hirsuta Barr. Tacouic. 



BOHEMILLID^. 



Bohemilla Barrande, 1S72. Syst. Sil. Boheme, vol. 1, Suppl., p. 137. 

 Type, Bohemilla slnj/cuda Barr. Cambrian. 



Caly.menid.i:. 

 Calymeue Brongniart, 1S22. Crust. Foss., p. 11. Type, Calijmene iuber- 

 riilata Briinu. Cambrian. Silurian. 



