Protoptychus, Heliscomys, Pleurolicus, Entoptychus. 475 



Incertae Sedis. 



[j ProtoptycMdae, TuUberg, 1899.] 



732. t Protoptychus, Scott, 1895. 

 Scott, Proc. Acad. PMlad., 1895, p. 269. 



4805.thatclieri, Scott — {3492); Tull)3erg, fEocaen. Uinta 



Syst. der NagetMere, 1899, p. 464. (Utali). 



733. t Heliscomys, Cope, 1873. 



Cope, Synops. New. Vert. Tert. Colorado, 1873, p. 3. 



4806. t vêtus, Cope — {3495); Matthew, Bull, f Oligocaeu. Colorado 

 Amer. Mus., 1899, p. 52. 



734. t Pleurolicus, Cope, 1878. 

 Cope, Palaîont. Bull. No 30, 1878, p. 4. 



4807.tsulcifrons, Cope — {3496); Matthew, fMiocaen. Oregou. 

 Èull. Amer. Mus., 1899, p. 62. 



4808.tleptophrys, Cope — {3497); Matthew, fMiocaeu. Oregon. 

 1. c, 1899, p. 62. 



4809.tdiplophysus, Cope —'{3498); Matthew, fMiocaen. Oregon. 

 1. c, 1899, p. 62. 



735. t Entoptychus, Cope, 1878. 

 Cope, P.alseont. Bull. No 30, 1878, p. 2. 



4810.tcavifrons. Cope — {3499); Matthew, fMiocaen. Oregon. 

 BuU. Amer. Mus., 1899, p. 62. 



4811.f planifrons, Cope — {3500); Matthew, fMiocaen. Oregon. 

 1. c, 1899, p. 62. 



4812.f lambdoïdeus, Cope — {3501); Matthew, fMiocaen. Oregon. 

 1. c, 1899, p. 62. 



4813.f minor, Cope — {3502); Matthew, 1. c, fMiocaen. Oregon. 

 1899, p. 62. 



4814.f crassiramis, Cope — {3503); Matthew, fMiocaen. Oregon. 

 1. c, 1899, p. 62. 



^) Le genre -j- G-ymnoptichus (Cope), synonyme d'Iseliyroniys (Leidy) 

 appartient à la famille des Ischyromyidae (Voyez ci- après). 



