x Jj CONTENTS 



Systematic description of genera and species — Cont. p 



Genus Poatrephes 200 



Poatrephes paludicola 200 



Genus Metoreodon 202 



Metoreodon californicus 203 



Metoreodon compressidens 204 



Metoreodon major 205 



Metoreodon medius 206 



Metoreodon no vomexicanus 207 



Metoreodon profectus 209 



Metoreodon cf. M. profectus 212 



Metoreodon relictus 212 



Genus Oreodontoides 213 



Oreodontoides oregonensis 213 



Genus Merychyus 216 



Merychyus arenarum 217 



Merychyus arenarum leptorhynchus 218 



Merychyus arenarum minimus 219 



Merychyus curtus 222 



Merychyus delicatus 225 



Merychyus elegans 226 



Merychyus elegans paniensis 227 



Merychyus euryops 228 



Merychyus harrisonensis 229 



Merychyus pariogonus 231 



Merychyus siouxensis 232 



Merychyus species 234 



Cf. Merychyus 234 



Genus Leptauchenia 234 



Leptauchenia decora 235 



Leptauchenia major 238 



Leptauchenia minora 239 



Leptauchenia nitida 239 



Genus Cyclopidius (syn. Brachymeryx, Pithecistes, Sespia) 241 



Cyclopidius californicus 242 



Cyclopidius densus 243 



Cyclopidius lullianus 246 



Cyclopidius simus 249 



Cyclopidius (Pithecistes) brevifacies = ? C. simus 251 



Cyclopidius (Pithecistes) decedens = ? C. simus 252 



Cyclopidius emydinus = ? C. simus 252 



Cyclopidius (Brachymeryx) feliceps = C. simus 254 



Cyclopidius heterodon = ? C. simus 254 



Cyclopidius incisivus = ? C. simus 255 



Subgenus Chelonocephalus 256 



Cyclopidius (Chelonocephalus) schucherti 256 



