254 CALIFORNIA ACADEMY OF SCIENCES. 



OLKSKLlAVm.. 



Oleuelhis Hall, 1861. Fifteeuth Kep. New York State Cab. Nat. Hist., p. 

 1 14. Type, Olenellm thomp^iom Hall. Twelfth Kep. New York State 

 Cab. Nat. Hist., jj. 59, figure. Taconic. 



PARADOXIDiE. 



Paradoxides Brouguiart, 1822. Hist. Crust. Foss., p. 30. Type, Para- 



doxides iesstiii Broug. Tacoaic. 



Auopoleuus Salter, 1864. Geol. Soc. Loudon Jonr., vol. 20, p. 236. Type, 



AnopolenuH henrici Salt. Tacouic. 



Bathynotus Hall, 1860. Thirteenth Rep. New York State Cab. Nat. Hist., 



p. 117. Type, Bathynotus holopi/ya Hall. Taconic. 



Dicellocephalus Owen, 1852. Kep. Geol. Survey Wisconsin, Iowa and 



Minnesota, p. 573. Type, Dikelocephalus minnesotensis Owen. 



Taconic. 

 Dolichometopus Angelin, 1854. Pahvont. Scaud., p. 72. Type, Dolicho- 



metopus svecicus Ang. Paheont. Scaud., p. 73, pi. 37, tig. 9. Taconic. 

 Hydrocephalus Barrande, 1846. Notice Prt'lim. Syst. Sil. Boh&me, p. 18. 



Type, Hydrocephalus carens Barr. Taconic. 



Kemopleurid^. 

 Kemopleurides Portlock, 1843. Geol. Rep. Londonderry, etc., p. 254. 

 Type, Remopleu rides colbii Portl. 



Olenid.e. 

 Protoleuus Matthew, 1892. Bull. Nat. Hist. Soc. .N. B., No. 10, p. 2. 



Type, P. elegans Matt. Taconic. 



Oleuus Dalman, 1826. Palaad., p. 56. Type, Olenus gibbosus Wahl. 



Taconic. 

 Zecauthoides Walcott, 1887. Am. Jour. Sci., 3d series, vol. 36, p. 165. 



Type, Olenoidc.s sjjiitosus Wal. Taconic. 



Paraboliua Salter, 1S49. Mem. Geol. Survey United Kingdom, decade 2. 



Type, Olenus spinulosa Wahl. Taconic. 



Peltura Milne-Edwards, 1840. Hist. Nat. Crust., vol. 3, p. 344. Type, 



Olenus scarabceoides Wahl. Taconic. 



Cycloguathus Linnarsson, 1875. Geol. Foreuingens Stockholm Forhandl., 



vol. 2, No. 12, p. 500. Tyi^e, Cyclognathus micropygus Linrs. 



Taconic. 

 Triarthrus Green, 1832. Mon. Trilobites North America, p. 87. Type, 



Trlarthrus beckii Green. Cambrian. 



Leptoplastus Angelin, 1854. Palasont. Scand., p. 46. Type, Leptoplastus 



stenotus Ang. Taconic. 



1. Sph^rophthalmus Angelin, 1854. Pabieont. Scand., p. 49. Tyjie, 



Sphoerophthalmus flagelUfer Ang. Taconic. 



2. Ctenopyge Linnarsson, 1880. Geol. Foreniugens Stockholm 



Forhandl., vol. 5, p. 145. Type, Olenus (Sphmrophthalmus) 

 peclen Salt. Taconic. 



