408 EXTINCT MAMMALIA OP NORTH AMERICA. 



Hydrochmrm JSi^opi, Leidy : Proe. Ac. Nat. Sc. 1856, 1G5 ; Holmes' Post-pliocene Fossils of South 

 Carolina, 1860, 112, PI. XXI, Figs. 3—6. 

 Teeth found in the post-pliocene deposit on the Ashley River, near Charleston, 

 South Carolina. 



INSECTIVORA. 



LEPTICTIS. 



Lieptictis Haydeni. 



See page 345, PI. XXVI, Figs. 25—28. 

 Leidy : Proc. Ac. Nat. Sc. 1868, 315. 

 Mauvaises Terres of White River, Dakota. Miocene. 



ICTOPS. 



Ictops dakotensis. 



Sec page 351, PI. XXVL Figs. 29, 30. 

 Leidy : Proc. Ac. Nat. Sc. 1868, 316. 



From same locality with former. 



ANOMODON. 



Anomodon Snyderi. 



Le Coute : Am. Jour. Sc. 1848, V, 106, Fig. Pictet : Trait6 de Paleont. 1853, 1, 179. Leidy : Jour. 

 Ac. Nat. Sc. 1856, 171, PI. 17, Figs. 25, 26. Broun: Leth. Geog. 1856, III, 1064. 



Indicated by an isolated tooth, supposed to be a canine, of peculiar character. It 

 was found in association with remains of Platygonus, &c., in the crevices of the lead- 

 bearing rocks in the vicinity of Galena, Illinois. Post-pliocene. The genus is of 

 uncertain reference, and is only suspected to be that of a large insectivorous animal. 



OMOMYS. 



Omomys Carteri. 



Leidy : Proc. Ac. Nat. Sc. 1869, 63. 



Indicated by portions of a skull, together with the greater portion of a ramus of 

 the lower jaw, discovered by Mr. J. Van A. Carter in a tertiary formation near Fort 

 Bridger, Wyoming. The skull was reduced to useless fragments; the ramus of the 

 lower jaw with teeth was the only characteristic ]3art preserved. This specimen is 

 represented in figures 13, 14, plate XXIX, magnified four diameters. It indicates 

 an insectivorous animal allied to, if not belonging to the family of the Hedge-hogs. 

 Among living Insectivora, described and figured by DeBlainville, Gervais, Peters, 

 Mivart, and others, the jaw fragment approaches most nearly in size and form the 

 corresponding portion in the representations of Tupaia ferruginea, of Java and neigh- 

 boring isles. It likewi.se nearly resembles in size and form the corresponding portion 



