454 U. S. NATIONAL MUSEUM BULLETIN 205 



Reithrodontomys megalotis dychei J. A. Allen* 



1895. Reithrodontomys dychei J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 7, 



p. 120, May 21, 1895. 

 1895. Reithrodontomys dychei nebrascensis J. A. Allenf, Bull. Amer. Mus. 

 Nat. Hist., vol. 7, p. 122, May 21, 1895. (Kennedy, Cherry County, Nebr.) 

 1914. Reithrodontomys megalotis dychei A. H. Howell, North Amer. Fauna 



No. 36, p. 30, June 5, 1914. 

 Type Locality. — Lawrence, Douglas County, Kans. Range. — Greater part of 

 Kansas, Nebraska, Iowa, Missouri, and South Dakota; southeastern and south- 

 western North Dakota; southwestern Minnesota (Hanson, Field Mus. Nat. Hist. 

 Publ. 564, Zool. Ser., vol. 29, p. 206, Oct. 26, 1944) ; southeastern Montana; 

 eastern Wyoming and eastern Colorado. 



Reithrodontomys megalotis pectoralis Hanson* 



1944. Reithrodontomys megalotis pectoralis Hanson, Field Mus. Nat. Hist. 

 Publ. 564, Zool. Ser., vol. 29, p. 205, Oct. 26, 1944. 



Type Locality. — Westpoint, Columbia County, Wise. Range. — Driftless re- 

 gion of southwestern Wisconsin and southeastern Minnesota. Recorded also 

 from western Dane County, southeastern Wisconsin (Schorger, Journ. Mamm., 

 vol. 31, No. 3, p. 363, Aug. 21, 1950). 



Reithrodontomys raviventris raviventris Dixon* 



1908. Reithrodontomys raviventris Dixon, Proc. Biol. Soc. Washington, vol. 

 21, p. 197, Oct. 20, 1908. 



Type Locality. — [Salt marsh near] Redwood City, San Mateo County, Calif. 

 Range. — Salt marshes bordering south arm of San Francisco Bay, from Redwood 

 City, San Mateo County, around to Melrose Marsh and to near Berkeley, Alameda 

 County, Calif.; zonal range, Upper Sonoran (Grinnell, Univ. California Publ. 

 Zool., vol. 40, No. 2, p. 171, Sept. 26, 1933) . 



Reithrodontomys raviventris halicoetes Dixon* 



1909. Reithrodontomys halicoetes Dixon, Univ. California Publ. Zool., vol. 5, 

 No. 4, p. 271, Aug. 14, 1909. (Regarded as distinct species by Grinnell, 

 Univ. California Publ. Zool., vol. 40, No. 2, p. 171, Sept. 26, 1933.) 



1914. Reithrodontomys raviventris halicoetes A. H. Howell, North Amer. Fauna 

 No. 36, p. 42, June 5, 1914. 



Type Locality. — Salt marsh 3 miles south of Petaluma, Sonoma County, Calif. 

 Range. — Chiefly tidal marshes on north side of San Francisco and Suisun Bays, 

 from vicinity of Petaluma, Sonoma County, east to Grizzly Island, Solano County; 

 occurs also as far up Sacramento River as Grand Island, 2 miles north of Knight's 

 Landing, Yolo County, and on south side of Suisun Bay east to near Brentwood, 

 Contra Costa County; vertical range below 50 feet; zonal range, Upper Sonoran 

 (Grinnell, loc. cit.). 



Reithrodontomys sumichrasti sumichrasti (Saussure)* 



1861. Reithrodon sumichrasti Saussure, Rev. Mag. Zool., Paris, ser. 2, vol .13, 



p. 3. 

 1897. Reithrodontomys rufescens J. A. Allen and Chapman, Bull. Amer. Mus. 



Nat. Hist., vol. 9, p. 199, June 16, 1897. (Jalapa, Veracruz, Mexico. 



Altitude, 4,400 feet.) 



