8CIUKIDi13— S(MUIllIS— SYNOPaiH OF HPKCIE3. 



»',71 



II. Tail-Tertobraahont roar-Hfth<(flv»-iilxlljs to tlirec-fourtbii) the length of Ibo lienil nml linl.v ; (nil, 

 wllb the bairf, ralber loiiRer than Ibe body (in miwl of tbe ipecles onr-twririb lunger), 

 Kcnrrilly dill and bnoby. Frmmlutii iiKuiilly *[ ; In ■ (evr 8|H'clei) \. Size lar({u oi tuudttiui : 



A. PrcDiolara ) : 



3. Above wliiliHb-Kray variud (oxoe|it in one •iilM|iecioii) with fiiivoiiH; bunvnili white; midillo 

 of back more ur leu browuiab ; an indistinct (tilvnnii Internl line; ean never connpicu- 

 ooaly ttiftiMl. //ati.— Sootbern porta of Canada, tbe Uuite<l States euat of tlio Plainii, 



and aootbward to Sontbern Mexico and Onateniala M, caiioi.inknhih. 



a. Above wbittab-Kray, with senenilly a aniall, narrow, browniab area along the middle of 

 tbe back; lengib from noae to tail 10.00 inchea or more; runa frc<|Uontly into uielaniHlIu 

 pbaaes, wbicb are aometimefl wholly bUck. Hab. — United States and Houtbcrn Cnnadit 

 aontbward to tbe Ixiaiaianiau fauna var. Uucolu. 



i. Smaller; generally leaa tban 10.00 iuobea in length; greater part of doraal anrfncn 

 browDiab, aide* only wbitisb-gray ; rarely rnna into raeluniatio phases. Hab.— South 

 AUaotIo and Oalt States and southward var. eaioUtmtin. 



e. Still smaller; plain dnll-gray, unvaried with fulvous; middle of tbe back darker. 

 Hab. — Yucatan var. yucataneniU, 



3. Above dark biniab-gray i a ilorsal band of bright chestnut ; a distinct black lateral line; no 



fnlvons suffosion ; below white ; ears very large, each with a conspiouona tnft or pencil 

 of long baira, as in S, rutgarit; runa into melaniatic phaaea. Hab. — Rocky Mountains 

 of Colorado, southward into Arizona S. AnnRTi. 



4. Above dark brown, varied with yellowish-grsy, or black, varied with fnlvnus; beneath 



deep brownish-red; color very variable. Sab. — Sontberu Mexico and Central 

 America 8. bootiii^, 



5. Above gray, varying from wbltiah to dark iron-gray, generally with a large patch of yellow- 



ish-rusty on tbe nape and lower part of tbe back ; beneath pure white, yellowisb-wbite, 

 or deep golden-yellow ; pelage generally ringed with brigbt^ulvous beneath tbe surface ; 

 tall rather narrow ; very vailable in ooloration. flat.— Southern Mexico.. S. i.EUCora. 



fi. Above dark gray, varying from whitish-gray to dnaky iron-gray; beneath deep reddiab- 

 oraogo, invading irregalarly tbe gray of tbe aides, tbe red wash of the aides soiiiotimen 

 nearly meeting on tbe doraal line at Ibe ehoulders; pelage soft and fall; tail bnsby. 

 /fat.— Sontbern Mexico and Quatcmala 8. aurkooastrr. 



7. Above dark olivaoeons-brown, minutely varied with yellowish or rufous; beneath gray 

 varying to rufous ; tail rather narrow; length about 9.7S; tail with Ibe hairs about 

 the same or a little less; size and general appearance of S. antuant var. m/onlger, but 

 with two upper premolars instead of one; smaller tban either of the preceding, with 

 narrower and shorter tall. Sab. — Sonthem Mexico, Central America, and northern 

 portions of South America 8. TEi'unoOASTKR. 



B. Premolars I : 



it. Color above generally some shade of 'gray, bot extremely variable ; maty and mnlanistic 

 phases very prevalent ; siie large ; tail broad and bnsby. Runs into three subspecies. 

 Hoi.— Eastern United States westward to the Plains ^. 8. nigkii. 



«. Length about 13.00 inches; color variable, hnt witb the mom and ean white, contrasting 



. with tbe color of the rest of the donal anrface ; geneially whitish-gray above, running 



into rafoaa; lielow generally fnlvons or rnfoua ; dusky phases frequent, ffat.— South 



Atlantic and Qnlf States var. niger. 



t. Smaller; length generally less than 13.00 inches; similar in color to var. af^rr, but witli 

 the noae and ears not white. In contrast witb the rest of the doraal anrfaoe. Hah — 

 Northern Atlantic States flrom Viiginia to New England var. einereHn. 



0. Siaeof tholuat; Irss variable in co'or ; above duaky-grny, strongly suffnsrd Trith rnfouH; 

 ears, feet, and ventral surfaoe fulvous, varying to rufous ; oocnsionaliy dusky or black 

 beneath. Hob.— Whole of tbe Miscisaippi Bakin, extending westward to tbe Plains and 

 northward into Dakota var. (HiioridaiiN*. 



