932 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



in >dy bone-cave, Montgomery County, Pennsylvania. These remains indicate 

 a species much larger than S. panolius Cope, and agreeing in size with S. 

 hudsonius, to which it seems not unlikely referable. 



SCIURUS PANOLIUS Cope. 



Returns panolivB Cope, Proc. Am.i Phil. Sue. xi, 1869, 1T4, pi. iii, fig. 5. 



This species is based on a portion of a mandibular ramus "containing 

 two molar teeth, and the included portion of the incisor, the coronoid and 

 vertical ramus being lost". It is from the caves of Wythe County, Virginia. 

 This fragment indicates a species about two>-thirds the size of Sciurus hud- 

 sonius, and appears to differ considerably in other respects from the corre- 

 sponding portion of the lower jaw of 8. hudsonius. While its size is that of 

 Turn ins striatus, it is a true Sciurus, and the smallest species of the genus 

 thus far known from North America. 



SCIURUS RELICTUS Cope. 



" Varamys nUctus Cope. Synop. New Vert, of Colorado, 1873, 3." 



Sciurua relietus Cope, Aun. Rep. U. S. Geo). Surv. Terr, for 1873 (1874), 475. 



"Size that of the Chickaree (Sciurus hudsonius)? Described from "two 

 left mandibular rami, with all the teeth complete". Said to "not differ in 

 any degree from corresponding parts of the existing Squirrels". Found in 

 the "Tertiary of Colorado", the exact locality not being given. 



TAMIAS L^EVIDENS Cope. 



Tamias lavidene Cope, Proc. Amer. Phil. Soc. xi, 1669, 174. 



This species, described from "the distal half of a mandibular ramus", 

 with the first molar teeth in place, is too imperfectly known to enable one to 

 say much respecting its character or affinities. Its size seems to have been 

 that of T. striatus, from which species it, however, differs in several important 

 particulars. In T. lavidens, the first lower molar has two anterior cusps, as 

 in T. lateralis and T. asiaticus var. quadrivittatus, instead of the single one 

 seen in T. striatus and T. harrisi. The portion of the ramus anterior to the 

 molars is also slenderer than in T. striatus, and the incisors lack the fine stri- 

 atums of the anterior surface seen in the last-named species, but have "three 

 narrow grooves on the outer longitudinal angle". From the bone breccias of 

 caves, Wythe County, Virginia. 



