EODENTIA RIUIUD^E AliVICOLA. 1Q5 



OCHETODON HUMILIS, (Aucl. & Bach.) Cones. 



Mus humiiis. AUD. & BACH., P. A. N. S. P., i, 1841, 97 ; J. A. N. S. P., viii, 1842, 300; 



Q. N. A., ii, 18.31, 103, pi. Ixv (South Atlantic States). 

 Hespcromys humiiis, WAGNER, Wieg. Arch., 1843, 51. 

 Reithrodon humiiis, BD., M. N. A., 1857, 448. 



Ochctodon humiiis, COUES, Proc. Acad. Nat. Sci. Phila., 1874, 185. 

 Mitu lecontii, AUD. & BACH., J. A. N. S. P., viii, 1842, 307; Q. N. A., iii, 1854, 324 (no 



fig.), (South Carolina). 



Hespcromys lecontii, WAGN., Wieg. Arch., 1843, 51. 

 Reithrodon lecontii, LsC., P. A. N. S. P., vi, 1853, 413. 

 IMus carolinensis, AUD. & BACH., J. A. N. S. P., viii, 1842, 300; Q. N. A., iii, 1854, 



332 (South Carolina). 



? Hcspcromys carolinensis, WAGN., Wieg. Arch., ii, 1853, 51. 

 ? Reithrodon carolinensis, BD., M. N. A., 1857, 452. 

 Reithrodon megalotis, BD., M. N. A., 1857, 451 ; Rep. Mex. B. Surv., ii, pt. ii, 1859, 43, 



pi. vii, fig. 4 a-c, pi. xxiv, tig. 4 a-g (Sonora). 



HAB. United States, southerly. South Carolina to Texas. Kansas, Missouri, 

 Iowa, Nebraska, Utah, Souora. 



Although not observed by the expedition, the known range of this 

 species, as may be gathered from the foregoing, includes New Mexico and 

 Arizona. The following species may also occur in the regions explored : 



OCHETODON LONGICAUDA, (Baird) Cones. 



Reithrodon lonyicauda, BAIRD, M. N. A., 1857, 451. ? TOMES, P. Z. S., 1801, 284 



(Guatemala). 



Ochetodon longicauda, COUES, Proc. Acad. Nat. Sci. Phila., 1874, 186. 

 HAB. California (? south thence to Guatemala). 



Subfamily ARVICOLINAE. 

 Genus ARVICOLA, Lace"p., emend. 



Mus (sp.), LINN., Syst. Nat., i, 17GG, et auct. antiq. 



Mures cunicularii, PALL., N. Sp. Glir., 1778, 77. 



Lemimts, LINCK, FISCHER, et al. 



Myodcs, PALL., Zoog. E. A., i, 1811, 172 (not Myodes of SELYS-L., 1839, which = 



Hypudacus, KEYS. & BLAS. = Evotomyn, COUES). 



Arvicola, LACEPEDE, Tabl., 1803, ct auct. recent, (includes amphibius and arvalis). 

 Uypudccus, ILL., Prod., 1811 (uot of KEYS. & BLAS., nor of BAIRD ; iucludes lemmvs, 



amphibius, and arvalis). 



Myonomes, E AFINESQUE, (type " Wilson's Meadow Mouse" = Arvicola pennsylvanica Orel ). 

 Psammomys, LEC., Ann. Lye. N. Y., 1829, 132 (type pinetorum ; not of EUErPEL). 

 Pityniys, McMuRTRiE's ed. Cuvier, i, 1831, 434 (type A. pinctorum). 

 Hemiotomys, SELYS-L., Etudes, 1839, 85 (amphibius, ttsrrestris, etc.). 

 Micfotus, SELYS L., fitudes, 1839, 86. 



