. Bulletin - United States National Museum. Science. 402 ^BULLETIN 56, UNITED STATES NATIONAL MUSEUM. REITHRODONTOMYS MEGALOTIS DESERTI Allen. DESERT HARVEST-MOUSE. Reithrodontornys megalotis deserii Allen, Bull. Am. Mus. Nat. Hist., VII, p. 127, May 21, 1895 (original description).—Miller and Rehn, Proc. Bost. Soc. Nat. Hist., XXX, No. I. Dec. 27, 1901, p. 98 (Syst. Results Study N. Am. Mam. to close of L900). [Reithrodontornys megalotis] pattidus, Elliot, Field Col. Mus., Zool. Ser., 11, 1901, p. 152 (pari) (Synop. Mam. N. Am.). [Rt ithrodontomys lonfficaudus] pattidus, Elliot, Field Col. Mu
. Bulletin - United States National Museum. Science. 402 ^BULLETIN 56, UNITED STATES NATIONAL MUSEUM. REITHRODONTOMYS MEGALOTIS DESERTI Allen. DESERT HARVEST-MOUSE. Reithrodontornys megalotis deserii Allen, Bull. Am. Mus. Nat. Hist., VII, p. 127, May 21, 1895 (original description).—Miller and Rehn, Proc. Bost. Soc. Nat. Hist., XXX, No. I. Dec. 27, 1901, p. 98 (Syst. Results Study N. Am. Mam. to close of L900). [Reithrodontornys megalotis] pattidus, Elliot, Field Col. Mus., Zool. Ser., 11, 1901, p. 152 (pari) (Synop. Mam. N. Am.). [Rt ithrodontomys lonfficaudus] pattidus, Elliot, Field Col. Mus., Zool. Ser., IV, 1904, p. 622 (pari I (Mam. Mid. Am.). Type-locality. Oasis Valley, Nye County, Nevada. Geographical range.—rFrom southern Nevada and Inyo County, Cali- fornia, south to the mouth of the Colorado River, Sonora, and Lower California. Description.—Slightly smaller than B. megalotis, with a longer tail; color paler: pelage,shorter and harsher. (Fig. 115.) Measuremt ids.—Averageof 10 adult males: Total length, 140 mm.; tail vertebra?, 75; hind foot, 18; ear from crown, Average of 10 adult females: Total length, 144 mm.; tail ver- tebras, 75; hind foot, ; ear from crown, Iii marks. — Forty specimens taken along the Colorado River during March, 1894, exhibit but slight individual and age varia- tions. Adults are all pure white below , excepting a few thai have clay-colored pectoral patches. They vary some in the intensity of the yellowish color of the up- per surface. Those that are immature1 are less yellowish than drab-gray above, grayish white. FIG. 115.—REITHRODONTOMYS M. DESERTI. O, iiind- foot; b, forefoot; c, tail; d, outer lateral VIEW OF LOWER MOLARS; e, SAME OF UPPER MOLARS; (M' OHPER MOLARS; 3, CROWNS of lower molars; i), lower incisors; /, upper incisors. and half-grown voung are adults below. A smaller series from Sallon and -New rivers, on the Colorado Desert, taken during April, closely resemble those from the Col
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