288 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 8* 



Hagerman 

 Edentata: 



Megalonyx leptonyx? (Marsh). 



Carnivora: 

 Canid sp. 

 Hyaenognathiis or Borophagus sp. 



Lutravusi idahoensis Gazin. 

 Lutravusl cookii Gazin. 

 Lutra (Satherium) piscinaria Leidy. 

 Felis lacustris Gazin. 

 Machairodusi hesperus Gazin. 

 Proboscidea: 



Mastodont. . 



Perissodactyla. 



Plesippus shoshonensis Gidley. 



Artiodactyla: 



Platygonus, n. sp. 



Blanco* 



Megalonyx leptosiomus Cope. 

 Mylodon sp. (probably Megalonyx) . 

 Glyptotherium texanum Osborn. 



Borophagus diver sidens Cope. 

 Aniphicyon sp. (probably Borophagus). 

 Canimartes cumminsii Cope. 



Felis hillanus Cope. 



Serridentinus praecursor (Cope). 

 Rhynchotherium falconeri Osborn. 

 Cordillerion tropicus (Cope). 

 Stegomasiodon successor (Cope). 



Plesippus simplicidens (Cope). 

 ? Plesippus cumminsii (Cope). 

 Nannippus phlegon (Hay). 

 Neohipparion sp. (probably Nannippus) ^ 



Platygonus hicalcaratxis Cope. 

 Platygonus texanus Gidley. 

 Pliauchenia spatula Cope. 



Camelid, possibly Camelops are- 

 narum Hay. 



Camelid, possibly Procamelus or 

 Tanupolama. 



Cervid sp. 



Ceratomeryx prenticei Gazin, 

 Lagomorpha: 



Hypolagus near vetus (L. Kellogg) . 



Hypolagus limnetus Gazin. 



Alilepusl vagus Gazin. 

 Rodentia: 



Citellid sp. 



Marmot sp. 



Thomomys gidleyi Wilson. 



Castor accessor? Hay. 



Ondatra idahoensis minor Wilson. 



Mimomys primus (Wilson). 



* The Blanco faunal list is essentially as given by Gidley in 1903, with the 

 notations by me, and the mastodont assemblage is as listed in a page proof of 

 Professor Osborn's forthcoming monograph on the Proboscidea. 



REVIEW OF LITERATURE ON PLESIPPUS 



The genus Plesippus was proposed by Matthew ^^ to include the 

 species Pliohippus simplicidens (Cope) '^ from the Blanco formation 



i« Matthew, W. D., Amer. Mus. Nov., no. 131, pp. 1-2, 1924. See also Quart. Rev. Biol., vol. 1, no. 2, 

 pp. 162-164, 1926. 

 »' Cope, E. D., Proc. Amer. Philos. Soc, vol. 30, pp. 124-125, 1892. 



