NATURAL CLASSIFICATION OF THE TRILOBITES 101 



Hai'pides Bej^rich. 

 Harpiua Novak. 

 Harttia Walcutt, 

 Hausmannia Hall and 



Clarke. 

 Hemisphaerocoryphe Reed. 

 Holasaplius Mattliew. 

 Holmia Matthew. 

 Holocephalina Salter. 

 Holometopus Angelin. 

 Homalonotus Koeuig. 

 Homalopecten Salter. 

 Homalops Remele and 



Dames. 

 Homoliclias Schmidt. 

 Hoplolichas Dames. 

 Hydrocephalus Barrande. 

 Hydrolenus Salter. 

 Illcenopsis Salter. 

 lUcenurus Hall. 

 Ilkenus Dalman. 

 Isocolus Angelin. 

 Isotelus De Kay. 

 Koenigia Salter. 

 Leiolichas Schmidt. 

 Leptoplastns Angelin. 

 LicJias Dalman. 

 Liostracus Angelin. 

 Loganellus Devine. 

 Lonchodomus Angelin. 

 Mer/alaspides Brogger. 

 Megalasipis Angelin. 

 Menocephalus Owen. 

 Mesonacis "Walcott. 

 Metopias Eichwald. 

 Micmacca Matthew. 

 Microdiscus P'.mmons. 

 Monorachos Schmidt. 

 Neseuretus Hicks. 

 Nieszkowskfa Schmidt. 

 Nilens Dalman. 

 Niobe Angelin. 



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Octillcemis Salter. 146 



Odontocephalus Conrad. 156 



Odontopleura Emmrich. 151 



Ogygia Brongniart. 146 



Ogygiopsis Walcott. 146 



Olenelloides Peach. 142 



Olenellus Hall. 142 



Olenoides Meek. 142 



Olemis Dalman. 142 



OnchoUchas Schmidt. 150 



Onycopyge Woodward. 155 



Oryctoceplialas AYalcott. 142 



Pulaiopyge Salter. 142 



Panderia Volborth. 146 



ParahoUna Salter. 142 



ParabolineUa Brogger. 142 



Paradoxides Brongniart. 142 



Peltura Angelin. 142 



Phacops Emmrich. 156 



Pha'etonella Novak. 148 



Plmrostoma Corda. 154 



Plullipsia Portlock. 148 



PhillipdneUa Novak. 146 



Placoparia Corda. 153 



Plcesiacomia Corda. 154 



Platymctopus Angelin. 150 



Platypeltis Callaway. 146 



Phitonides Hicks. 142 



Prwno2)eltiH Corda. 148 



Proceratopyge Wallerius. 142 



Pro'etus Steininger. 148 



Prosopisciis Salter. 153 



Protagraidus INIatthew. 142 



Protolenus Matthew. 142 



Protopeltura Brogger. 142 



Protypua Walcott. 142 

 Pseudni^hillipsid Gemmellaro. 



148 



Psendosphcnrexochns Schmidt. 



Psilocephabis Salter. 

 Pterocephalia Roemer. 



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11 



