Corynexochus — Continued. page 



spinnlosus Angelin, described 323 



figured, pi. 55, figs, i, la-b 432 



characterized 310 



compared with Corynexochus bornholmicnsis 323 



Corynexochus clavatus (Walcott) 316 



Corynexochus delagei 318 



Protypus senectus (in synonymy) 315 



genotype 311 



genus founded on 312 



synonymy 323 



stephenensis (Walcott), described 324 



figured, pi. 55, figs. 5, 5a-c 432 



characterized 311 



correction of error 324 



synonymy 324 



umbonatus, genus founded on 312 



does not belong to Corynexochus 312 



(Bonnia) biisa, new species, described 326 



figured, pi. 57, fig. la ; pi. 60, figs. 3, T,a-c 436, 442 



compared with Corynexochus bubaris 314, 327 



Corynexochus (Bonnia) parvulus 326, Z'^j 



{Bonnia) Heldensis (Walcott), described 327 



figured, pi. 57, figs. 4, ^a-b 437 



above Bathyuriscus (Policlla) primus 353 



associated fauna listed 327 



associated with Mesonacis gilberti and OlcncUus canadensis. . 327 

 compared with Corynexochus (Bonnia) parvulus ( Billings) . . 327 



discussed 307, 308 



Rocky Mountain representative of Corynexochus {Bonnia) 



parvulus 328 



synonymy 327 



(Bonnia) parvulus (Billings), described 328 



figured, pi. 57, figs, i, ib-c ; pi. 64, fig. 6 436, 45 x 



associated fauna named 329 



characterized 326 



compared with Corynexochus brennus 314 



Corynexochus senectus 321, 328 



Corynexochus (Bonnia) busa 326 



Corynexochus (Bonnia) Heldensis 327 



Dorypyge and Pagodia 328 



Marjumia callas 402 



Mcnoccphalus saltcri Devine 32Q 



discussed 307, 308 



listed 322 



Matthews' variety angifrons 329 



represented in Rocky Mountain fauna by Corynexochus 



(Bonnia) Heldensis 328 



synonymy 328 



