28 



divided into two genera, 1 Dipodomys and Pcrodiptis? with 



1 Cf . Merriam, N. Am. Fauna, No. 3, p. 72, Sept., 1890. Dipodops, gen. 

 nov. , later changed to Perodipus Fitzinger, an earlier name based on the same 

 type. (Cf. Merriam, Proc. Biol. Soc. Wash., VII., p. 26, April, 1892.) 



2 Following are the recorded species and subspecies of these two genera : 

 Dipodomys phillipsi Gray. Valley of Mexico and adjacent mountain slopes 



and plains. (On this species see an important paper by Merriam, Proc. Biol. 

 Soc. Wash., VIII., pp. 83-96, July 18, 1893.) 



Dipodomys ornatus Merriam, Proc. Biol. Soc. Wash., IX, p. no, June 21, 

 1894. Berriozabal, Zacatecas. Mexico. 



Dipodomys perotensis Merriam, ibid., p in. Perote, Vera Cruz, Mexico. 



Dipodomys elator Merriam, ibid., p. 109. Henrietta, Clay Co., Texas. 



Dipodomys deserti Stephens, Am. Nat., XXI., Jan., 1887, p. 42, pi. v. 

 Deserts of Southeastern California. 



Dipodomys merriami Mearns, Bull. Am. Mus. Nat. Hist., II., p. 290, Feb., 

 1890. Arizona. 



Dipodomys merriami melanurus Merriam, Proc. Cal. Acad. Sci. (2), III., 

 P- 345. June, 1893. San Jose del Cabo, Lower California. 



Dipodomys i7ierriami nevadensis Merriam, Proc. Biol., IX., p. ill, June 21 

 1894, Pyramid Lake, Nevada. 



Dipodomys merriami nitratus Merriam, ibid., p. 112. Keeler, east side of 

 Owens Lake, California. 



Dipodomys merriami nitratoides Merriam, ibid. , p. 1 12. San Joaquin Valley, 

 California. 



Dipodomys merriami exilis Merriam, ibid., p. 113. Fresno, San Joaquin 

 Valley, California. 



Dipodomys merriami atronasus Merriam, ibid., p. 113. Hacienda La Parada, 

 San Luis Potosi, Mexico. 



Dipodomys ambigttus Merriam, N. Am. Fauna, No. 4, p. 42, Oct., 1890. 

 El Paso, Texas. 



Dipodomys spectabilis Merriam, ibid., p. 46. Cochise Co., Arizona. 



Dipodomys calif omicus Merriam, ibid., p. 49. Mendocino Co., Cal. 



Dipodomys simiolus Rhoads, Proc. Acad. Nat. Sci. Phila., 1893, p. 410, 

 Jan. 27, 1894. Agua Caliente, California. 



Dipodomys similis Rhoads. ibid., p. 411. San Diego Co., California. 



Dipodomys parvus Rhoads, Am. x\'at., XXVIII. , Jan., 1894, p. 70. San 

 Bernardino Valley, California. 



Perodipus agilis (Gambel). Southern California. 



Perodipus ordii (Woodhouse). Western Texas. 



Perodipus ordii palmeri (Allen), Bull. Am. Mus. Nat. Hist., III., p. 276, 

 June, 1891. San Luis Potosi, Mexico. 



Perodipus ordii columbianus Merriam, Proc. Biol. Soc. Wash., IX, p. 115, 

 June 21, 1S94. Umatilla,' Plains of Columbia, Oregon. 



Perodipus streatori Merriam, ibid., p. 113. Carbondale, Mariposa Co.. Cal. 



Peivdipus panamintinus Merriam, ibid., p. 14. Panamint Mountains, Cali. 

 fornia. 



