G24 



MONOGltAPIIS OF NOUTFI AMEllIOAN UODRNTIA. 



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Gcomgi horraU; Ricil., Rrp. Ilrit. Ansae, for IS30, vl, IBHT, US, donorllMxl on p. 1&7. (■■ Baakatchewan.'')— 

 IIaciim., J4>iiiii. Aciiil. Nat. 8cl. I'liilu. IKtl), 1U3. (OrlKiiinlly ilcMrlbod fmm RichnnliHiii'ii 

 type, " Coliiiiilila It.," inarkeil " PtudoHoma bonali; Kioli.")— UkKay, N. Y. Fii. HH'i, 

 Vi. (ConipilcU fn)in Uuclimaii.)— BciiiNZ, Hynuii, Uaniiu. U, lti4ri, 1%. (Cunipilod from 

 Uncliniaii.) 



Aiamyt torrafto, Waon., Suppl. 8ubrob. iii, 1843, 391, (CoDipilei].) 



Saccophortitborcalia, Okay, Lint Ilr. Mim. I«i43, 149 (" Canudn ;" incro mrntion, with aomo wranfi ayno- 

 nyiiiH).— MuiiiE, P. Z. 8. ItffO, HO (as boatof (Ettru$). 



ritudotloma boreall; " Rich. M^8."— Ai:d. & Bach., Q. N. A. iii, l«a, lOH, pi. 143. (Doacription and Hg- 

 nro apparently from tliu ortKioal apocimons.) 



Thomomyi bortalit, HaiiiIi, Maniui. N. A. 1807, 3110, pi. 23, Og*. ia-r. (Account from (ypcaof "borealia" 

 and " towntendii ", in Muii. Philo. Acad., with T7liieb n Calirornian R|iooimen ia conniderrd 

 )irobably Identical.) — Nkwb., P. R. It. Rep. vl, 1807, &U (reata on the Califoruian apecinieu 

 Just mentioned), 



Geomgi ioitmiendil, " nwii. U88."— Bachm., Jonm, Acad. Nat, Sci, Philo. 1839, 105. ("CnlnmliiaR." 

 Oeacribed as distinct from " borvalis", with much bositation, entirely in deference to Rich- 

 ardson.)— Rich., Zfiul. Voy. Blosaom, 1839, p. IU'.-DkKay, N. Y. Fn. 1842, 93. (Compiled 

 from Bacbnian.) — 8CIIIKZ, Synop. Uanim. 11, 184&, 137. (Compiled.) 



Mcomyt lomieium, Waq.n., Suppl. Hchreli. ill, 1843, 391. 



Oeornut u>iifulcalti$, Gray, " Br. Uns."— Oeay, {. e. 



Tkomomf n^fttcm; Maxim., Nov. Act. Acad. Ciu.-Lcop. xlx, pt. 1, 1839, 383 ; Arch. f. Natnrg. 1841, pt. 11, 

 At ; Hid. 1801, — ; Verz. «iag. N.-Am. Roiae, 1802, 140, pi. 4, f. 5 (penis-bone). (In the lost 

 qnotation, thn generic name is apelled "Tomomys".) (Hisaouri region. )—SciliNZ, By nop. 

 Hamm. 11, l^ft, 134 (oxclusivo of the synonym Orgclomy botia, Eyd. A. Oerv.). (Compiled 

 from Haxiinillan ; California erroneously asslguel as the locality.) — Baikd, Proo. Acad. 

 Nat. Sci. Pbila. vii, 18u5, 335 ; M. N. A. 1857, 397. (Itetloscription of specimens from 

 •• Nebraska", i. «., Dakota ; ForU Pierre, Randall, and Uuion.)— Baikd, P. R. R. Rep. x, 18:i0, 

 Ounniron's ond Beckwith's Routes, Mamm. p. 8, pi. 10, f. 1 (the same). — Strvkmson, U. 8. 

 Oeol. Surv. Terr, for 1870, 1871, 402 (Wyoming).— Amiw, Bull. Hinn. Acad, i, 1874, 70 (cato- 

 logned upon presumption of its occurrence in Miunesota). — Allen, Proo. Host. Boa xvli, 

 1874, 43 (Yellowstone River); Bull. Ess. lust, vi, 1874,00, 01, 00 (rather suppoaed than 

 known to be this species). 



Onmf rufactnt, LkConte, Proo. Acad. Nat. Bel. Pbila. vi, 1852, 101. (Reileacrlbed from typesof " bore- 

 alls" and " townscndii ", in Philadelphia Academy, marktd "Columbia River".) 



Aicomy rtifacent, Waon., Suppl. Schreb. Iii, 1843, 387. 



nnmya (Thomomy) m/eacnis, Gikbel, Siiug. 1855, 530. 



rAononyt "fulvui ", Meiiii., Ann. Rep. U. B. Oeol. Surv. Terr, for 1873, 187:1, 065. {Seo Woodb.) 



Diagnosis. — Coloration almost exactly that of the house-rat (Mus decu- 

 manus) — sometimes assuming a more reddish phase, occasionally blackish- 

 plumbeous ; tail and feet white, and much of the chin, throat, and breast 

 white in irregular patches, where the fur is white to the base. No sooty- 

 lihickish about the mouth-parts; no obvious distinction in color between the 

 pouch and its surroundings ; no strongly-pronounced reddish-brown on the 

 under parts ; general tone of coloration never decidedly tawny. Ears set in 

 a small blackish area. Length, 6 to 8 inches ; tail, 3 inches or less, decidedly 

 less tlian half the length of head and body ; fore and liind feet (claws included) 

 airproximately equal to each o\her, 1.10 to 1.25 ; longest fore claw little less 

 tli'in the length of the rest of the hand, about 0.50. Mamma;, 6 pairs — 2 pairs 

 inguinal, pectoral, and axillary, respectively. In some specimens, however, 

 one or two pairs a])parcntly fail to develop, generally the axillary ones. 



