18 NORTH AMERir;AN MUSTELID.E. 



'* This species appef♦^^"^to have been perhaps rather larger 

 than the Galera bftrf)ata (Gray) of Brazil, and of a rather 

 more slender mvj;:zle. As compared with that species, it ex- 

 hibits many pf^-caliarities. The third premolar is smaller, and 

 the first, the sectorial, and the tubercular [ar.] relatively larj^er. 

 In G. V-arbata, the first molar has but one root, and the 

 mandibular ramus fis| thicker and deeper. The masseteric 

 ridge advances to opposite the middle of the sectorial molar, 

 and is continued on the inferior margin of the ramus, much 

 anterior to its position in the G. macrod o n . 



''The discovery of this species adds another link to the evi- 

 dence in favor of the extension of neotropical types* over the 

 nearctic re;?ion during the post-pliocene epoch. Of thirty con- 

 tinental North American species enumerated by Leidy (An- 

 cient Fauna of Nebraska, 9) all but thirteen may be said to be 

 characteristic of that, or closely allied to the species of the 

 present period of North America. Of the thirteen, one (Elephas) 

 is characteristic of the old world, of one (Anomodon) affinities 

 [arej unknown, and eleven are re[)resented by members of the 

 same family or genus now living in South America." — [Quoted 

 from the orifjlnal article.) 



4. Cj»rtl«'ra |>«;r<lici«la, (Jope. 



llemlarlH pcrdlcida, C'o/ve, Proc. Acad. Nat. Sci. Phila. l^r/j, .} (named, not dcHcribed). 

 (iaiera perdicida, (Jope, Proc. Amer, PhiloH. Soc. IWJ, 177, pJ. iii. figs, l, 1 a.— //eidy, 

 Kxt. Mam. Dak. and Nebr. 1860, 445. 



From limestone breccia, Wythe County, Virginia. Post- 

 pliocene. 



*' This is a small carnivore of the Lutrine group of the 

 Mustelidaj, apparently allied to Mephitis and Lutra. [The 

 generic name given, however, is that of one of the Mmtelinoi.] 

 It is only represented by a left ramus of the mandible, with 

 dentition complete. Its characters are as follows : Dentition 

 h V h i- -^^'^ tubercular molar is relatively as in the allied 

 genera, but without sharp tubercle j the sectorial characterizes 

 the genus as distinct from the two mentioned [Lutra siml Mephi- 

 tis]. The posterior lobe is without the marked internal and exter- 

 nal acute tubercle seen in Mepfutiffy nor the tubercular crest of 

 Lutra, but is rounded and slightly concave. The median crests, 



•* " The genus Galera, Gray, in here regarded aw distinct from Galictin Bell 

 (Grisoiiia Gray), as it possesses an internal ttilxTfl'- r.n Uti- \ui'cv\(>r hc.c.Ui- 

 rial, which is wanting in the latter." — (Loc. dt.) 



