SCIDBID^— 8PERMOPHILUS EICHABDSONI. 



849 



SpermophiUu gutlatut Oiebel, SUuget. 1U55, C34 0° port ; only the Ameiicaa references). 



Spermophilut imtmteiidi BaciimjiK, Jonrn. Acnd. Nat. Sci.Pbila. viii, 1639,61 ; Towusend's Narrative, 18U9, 



310.— Audubon &, Dachman, Qnod. N. Amer. iii, 1853, 286, pi. oxlvii, fig. 1.— Baird, Mam, 



N. Amer. 1857, 326.— Haydkn, Trans. Amor. Phil. 8oo. Phila. xii, 1863, 145,— Mkbkiam, U. 8, 



G«ol, Sarv, Terrs, Cth Ann. Bep, 1873, 664. 

 SptrmopkilMt Unentmdi var, bmiumdi Allex, Proo. Bost, Soo. Nat. Hist, xvi, 1874, 293. 

 Spirr.u>philiit ettgam Kennicott, Proc. Acad, Nat. 8ci. Phila. 1863, 158.— Cooper, Proc, Cal. Acad. Set. 



iv, 1869, 4 (Salt Lake, Utah, to Johnson's Pass, Sierra Nevadas). 

 SpermopUliu riehardiotii var. eUgaiu Allen, Proo. Bost. Soo. Nat Hist, xvi, 1874, 292. . g- 



Sptmophiliu armatut Kennicott, Proo. Acad. Nat. 8c!. Phila. 1863, 158. ' " 



v.n 



Specific chars. — Length to base of tail 7.00 to 9.50; of tail-vertebrsB 

 2.25 to 3.51) ; of tail to end of hairs 3,50 to 4.50. General color above, yel- 

 lowish-brown, varying on the one hand to grayish and on the other to dubky, 

 with or without rather distinct small light and dark s|")ts ; sides fulvous, 

 varying to brownish ; beneath, grayish-white, washed faintly with fulvo is, 

 varying to strong rust-yellow or tawny. Tail above darker than the back, 

 edged with whitish ; beneath, generally brownish-yellow, with a partly con- 

 cealed subterininal black band. Ears small, pointed, one-sixth to one-fourth 

 of an inch high. Tail short, flattened, generally more or less bushy, but 

 sometimes quite t«rete ; nose short and broad ; general form rather thick and 

 stout ; pelage fine and soft. Varies in size and color with locality, becoming 

 smaller and darker southward, with larger ears. 



Var. BICHARD80NI. 



Richardson's Spermophile. 



Varietal chars. — Length of iiead and body S.-'JO to 9.00, ranging from 

 about 8.00 to 9.50 ; of tail to end of vertebriE 3.')0 to about 3.50 ; of tail to 

 end of hairs 3.76 to about 460. Above, lighf ytillowish-brown, v.ii'd with 

 dusky, generally indistinctly mottled wiJi. pale taw ny and dusky ; sid " vjf the 

 body, nose, outer side of limbs, and buttocks pale lusly -yellow ; beneath, yel- 

 lowish-white, varying from white, faintly washed with pule fulvous, to deep 

 tawny ; paler on the throat and middle of the breast. Tail gray, varied with 

 black above, bright tawny or brownish-yellow below, with a partly concealed 

 bar of black near the end, edged both above and below with yellowish-white. 

 Ihe hairs of the sides of the tail are crossed by a single broad bar of black, 

 which increases in width toward the end of the tail. There is also usually 

 a narrow bar of black at the extreme banc of the hnirs. 



A series of nearly sixty specimens of tint: variety, collected in summei 

 (July and August) by Dr. Coues at (litfcrent poini.-. along tiie 49lh parallel, 

 61 M 



^.r—4-jA 



