1424 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Family TRINUCLEID^E Emmrich. 

 Cryptolitlms Green, Dionide Barrande, Tretaspis McCoy, Trinucleus Murchison. 



Family RAPHIOPHORID^E Angelin. 

 Ampyx Dalman (subgenus Lonchodomas Angelin). 



Order OPISTHOPARIA. 



Family OLENID^E Burmeister. 



Acantholenus Matthew, Aulacopleura Corda, Conocephalites Zenlter, Ctenopyge Lin. 

 narason, Loganellus Devine, Lonchocephalus Owen, Parabolina Salter, Faraboli- 

 nella Brogger, Parabolinopsis Hoek, Peltura Milne-Edwards, Ptychoparia Corda, 

 Sphserophthalmus Angelin, Triarthrus Green. 



Family SOLENOPLEURID^E Angelin. 

 Hystricurus Raymond, Solenopleura Angelin. 



Family CERATOPYGID^E Raymond. 

 Ceratogyge Corda. 



Family ELLIPSOCEPHALID^ Matthew. 

 Plethopeltis Raymond. 



Family REMOPLEUKID^ Corda. 

 Remopleurides Port lock. 



Family BATHYURID^ Walcott. 



Bathynrellus Billings, Bathyurus Billings, Bolbocephalus Whitfield, Petigurus 

 Raymond. 



Family ASAPHID^E Burmeister. 



Asaphellus Callaway, Asaphus Brongniart, Basilicus Salter, Brachyaspis Salter, 

 Gerasaphes Clarke, Hemigyraspis Raymond, Holasaphus Matthew, Illsenurus Hall, 

 Isoteloides Raymond, Isotelus DeKay, Megalaspis Angelin, Nileus Dahnan, Ogy- 

 gites Tromelin and Lebesconte, Onchometopus Schmidt, Ptychopyge Angelin, 

 Symphysurus Goldfuss, Vogdesia Raymond. 



Family ILL^ENID^E Corda. 



Burnastus Murchison, Illsenoides Weller, Illaenus Dalman, Thaleops Conrad. 

 Family DIKELOCEPHALID^E Miller. 



Apatokephalus Brogger, Calvinella Walcott, Conokephalina Brogger, Dikelocephalus 

 Owen, Platycolpus Raymond, Saukia Walcott. 



Family GOLDIID/E Raymond. 

 Goldius Dekoninck. 



Family PROETID^: Corda. 



Cyphaspis Burmeister, Haploconus Raymond, Prostus Steininger. 

 Family LICHADID^: Corda. 



Amphilichas Raymond, Arctinurus Castelnau, Conolichas Dames, Corydocephalus 

 Corda, Dicranopeltis Corda, Lichas Dalman, Metopolichas Gurich. 



Family ODONTOPLEURID/E Burmeister. 



Acidaspis Murchison, Ceratocephala Warder, Glaphurus Raymond, Odontopleuar 

 Emmrich. 



