Protoptychus, HeLiscomys, Pleurolicus, Entoptychus. 
475 
Incertae Sedis. 
[j Protopty cludae, Tttllborg, 1899.] 
732. f Protoptychus, Scott, 1895. 
Scott, Proc. Acad. Philad., 1895, p. 269. 
4805. f hatcheri, Scott — (34.92); Tullberg, jEocaen. Uinta 
Syst. der Nagethiere, 1899, p. 464. (Utah). 
733. tHeliscomys, Cope, 1873. 
Cope, Synops. New. Vert. Tert. Colorado, 1873, p. 3. 
4806. | vetus, Cope — (34.95); Matthew, Bull. fOligocaen. Colorado 
Amer. Mus., 1899, p. 52. 
734. f Pleurolicus, Cope, 1878. 
Cope, Palpeont. Bull. No 30, 1878, p. 4. 
4807. y sulcifrons. Cope — (3496); Matthew, f Miocaen. Oregou. 
Bull. Amer. Mus., 1899, p. 62. 
4808. -i-leptophrys, Cope — (34.97); Matthew, f Miocaen. Oregou. 
1. c., 1899, p. 62. 
4809. jdiplophysus, Cope — (3498); Matthew, f Miocaen. Oregou. 
1. c., 1899, p. 62. 
735. f Entoptyelius, Cope, 1878. 
Cope, Palseont. Bull. No 30, 1878, p. 2. 
4810. f cavifrons. Cope — (34.99); Matthew, 
Bull. Amer. Mus., 1899, p. 62. 
4811. f planifrons, Cope — (3500); Matthew, 
1. c., 1899, p. 62. 
4812. ]- lambdoideus, Cope — (3501); Matthew, 
1. c., 1899, p. 62. 
4813. f minor, Cope — (3502); Matthew, 1. c., 
1899, p. 62. 
4814. jcrassiramis, Cope — (3503); Matthew, 
1. c., 1899, p. 62. 
f Miocaen. Oregou. 
f Miocaen. Oregou. 
f Miocaen. Oregon. 
f Miocaen. Oregon. 
jMiocaeu. Oregon. 
j Le genre f G-ymnoptichus (Cope), synonyme d’Iscliyromys (Leidy) 
appartient a la famille des Isclvyromyidae (Voyez ci-apres). 
