MURIDAE-SIGMODONTES— HESrEROMYS LEUCOrUS. 



51 



Mui tyhaiioM; var., £rxledkn, Syst. Au. 1, 1775, 31)0 (bniie<l on the New York vnr. of ronnnnt). 



SI»» tyhalicul var. noveborai'imiiii, Fibciieii, Hyuoiwia, 1889, 318 (New York variety). 



J/iM noethoraoaittt, SEl.YH-LoNncilAMl>H, fitndcg do Microni. IKU), (i7. 



Mu agrariut var. amrricanun, " Keiik'm Linnmiia, I7U2, 231 " (liaiwU on Pennant). 



Jfnperom!it(Fctpiriviu») americanHt, Coukh & Yahrow, Rep. ZtMtl. Kxpl. W. lUOtb Mcrid. 1875, — (iu prciw). 



J/hi ajraHNt, OOUMAN, Am. Nat. Hist, i, 3d vd. ISliO, 316 (nlw) iu tlio earlier editiona).— Linslrv, Am. 

 Journ. Svi. xlii, 1843, 301. 



Mutmlua le»copv«, Rafinksque, Amer. Monthly Mag. iii, i8H, 44C. 



Mmh le»copiii, Desmarest, Mamm. ii, 18a2, 307.— Haiilan, Fn. Amer. 18'25, 151.— Griffith, Anini. Kingd. 

 V, 1837, aw.— FiscngR, SynopsiH, 1820, 326.— ? Uichardhon, Zool. Jonrn. iii, 1818 ; Fn. Bor.- 

 Am. 1, 1829, 142 (perhapa rather referable to var. a»iiorj«i«ia).— DkKay, N. Y. Zoo), i, 1842, 88, 

 pi. 23, fig. 1.— AUD. & IlAcn., Q. N. A. 1, 1849, 300, \A. 40.— Tiio.mi-s«)n, Nat. Hist. Vermont, 

 1853, 13 — Kknnicott, Agric. Rep. U. 8. Patent Office for IKiO (1857), 90, pi. 10. 



JIupmmgh leuoopH; LkContk, Proc. Acad. Nat. Soi. Phlla. vi, 1852, 413.— Bairp, M. N. A. 1857, 459.— 

 Allen, Bull. Mns. Conip. Zool. i, 1809, 827 (Mniwiichusetts), and ii, 1870, 178 (Florida).— 

 Dali., Alaska and its Keiionrces, 1870, 577.— Maximilian, Arch. Nalnrg. xviii, 1862, pi. 4, f. 4 

 (penis-bone) ; Verz. N.-Am. SUug. 1802, 156. — And of must lato writera. 



Hetperomyt ( rra/xriiimii) leMcoput, CnuKS, Proc. Acud. Nut. Pci. Pbila. 1874, 178. 



Crieelus mi/oidn, Uapper, Zool. Journ. v, 1830, 804, pi. 10 (Canada). 



Henperomyii myoidtt, Baikd, M. N. A. 1857, 472 (Vermout ; based on Gapper), '■ '■' ■' 



Jrrioola emfHOHtii, UeKay, Uep. Quad. Mas«. 1840, 61. 



Hespiromyt manicvlalH; Waoner, Wiegniann's Arehiv, 1843, ii, 141, and 1845, ii, 148; Ahhand. Akad. 

 Wissensch. v. pt. ii, 1848, 310 (Labrador). 



Baperomy poUonolM, Wagnkk, Wlegniann's Arcbiv, 1843, ii, 52 (Georgia). 



napcromyi eampairlt, LeCostk, Proc. Acad. Nat. Sol. Phila. vi, 1853, 413 (New Jersey ; typo. No. 4726, 

 Hns. Smitlie.).— Al'i>. Sl Bach., Q. N. A. Iii, 1654, 295 (after LeConte).— Baird, M. N. A. 1857 

 485 (after LeConte). 



Bt»per<myt lacanut, Woodhouse, Proc. Arnd. Niit. Sci. Pbila. vl, 1853, 242; Sitgrrave's Rep. Kxpl. 

 Zuni River, 1853, 48, pi. 2 (El Paso, Tex. ; type. No. 25.'j9, Mus. Smiths.).— Aim. & Bach., Q. 

 N. A, iii, 1854, 319 (after Wo.Hlbonso).- Baird, M. N. A. 1857, 464, pi. 8, flg. 1, pi. 52, fig. 5, 

 a-6 (Texas and New Mexico); U. S. & Mex. Bound. Snrv. ii, pt. ii, 1859, 43.— Kknnrrlv, 

 P. R. R. Rep. X, 1859, 14, pi. 8. fig. 1. 



Uaperinny cognatut, LeContk, Proc. Acad. Nat. Sci. Phila. vii, 1655, 442 (Southern States ; types, Nos. 

 4708, 4709, Mus. Smiths.).— Baird, M. N. A. ia57, 469 (Southern States). 



llesperomyf gracilU, LeContb, Froo. Acad. Nat. Sci. Phila. vii, 185.5, 442 (Ohio or Michigan, and Wiscon- 

 sin ; types, Nos. , 4710, Mus. Smiths.). 



Ufuptromyt auiteriu, Baird, Proc. Acad. Nat. Sci. Phila. vii, 1855, 330 (Washington Territory ; types in 

 Mus. Smiths.) ; M. N. A. 1857, 466.- Cooper & Si'Cklev, Nat. Hist. Wash. Terr. 1860, 102, 127. 



Jlttperomy koylii, Baird, Proo. Acad. Nat. Sci. Phila. vii, 1855, :!35 (El Donulo County, California ; type. 

 No. 356, Mus. Smiths.) ; M. N. A. 1657, 471, pi. 8, f. 3, pi. 58, flg. 3, a-c (California, Oregon, 

 and Washington Territory). 



Baperomyi gambeli, Haird, M. N. A. 1857, iM (Pacific coast. United States).- Newokrrv, P. R. R. Rep. 

 vi, ia57, Zool. 60.— Baird, P. R. R. Rep. Cal. Route 1859, No. 3, 82.— Cooper & Sucklev, 

 Nat. Hist. Waab. Terr. 1800, 102, 127. 



r Betptromyt iii(fia»K«, Maximilian, Arehiv fUr Naturg. xviii, pt. i, 1868, 111 ; Verz. N.-Am. Siing. 1868, 159 

 (Indiana). 



Note (1).— References to the recognized varieties of leucoput are txcluded from the nbovo, and will 

 be found under their respective heads. 



NoTB (8). — It is not certain that some other speciflo name will not be required to lie adopted 

 instead of the established leueopm which we continue to use. Since the animal falls in a different genus 

 from AfN<, tylvaticut or agrariiis might perhaps be employed, though both of these terms were originally 

 pniiMsed for another species. Another candidate for recognition is the varietal term americanui, said to 

 api>ear in Kerr's Linnoeus, 1792. The latter will be found used by Dr. Yarrow and ourselves in the 

 forthcoming volume above cited ; as we fully expected, at the time of allowing it to pass into metal, to 

 be able to verify the quotation. Reference to Kerr's work, however, having proved impracticable, the 

 term leucoput is allowed to stand, pending final settlement of the question. 



The characters of Hesperomys leucopus will have been so fully elucidated 

 by the time we have concluded the investigation that we purpose entering 



