BY E. RAYMOND HALL AND MARILYN BAILEY OGILVIE University of Kansas Lawrence 1960 University of Kansas Publications, Museum of Natural History Editors: E. Raymond Hall, Chairman, Henry S. Fitch, Robert W. Wilson Volume 9, No. 18, pp. 513-518, 1 map Published January 14, 1960 University of Kansas Lawrence, Kansas PRINTED IN THE STATE PRINTING PLANT TOPEKA, KANSAS 1960 28-1243 BY E. RAYMOND HALL AND MARILYN BAILEY OGILVIE Perognathus goldmani Osgood and Perognathus artus Osgood from southern Sonora

Perognathus goldmani Osgood, N. Amer. Fauna, 18:54, September 20, 1900, type from Sinaloa, Sinaloa. Range. —See map 1 . Measurements. —Average of five topotypes (Osgood, op. cit. :55): total length, 202; tail vertebrae, 112; hind foot, 28; occipitonasal length, 27.7; mastoidal breadth, 14.5; greatest width of interparietal, 7.4. Records of occurrence (in each state the localities are listed from north to south).—Sinaloa: 2-1/2 mi. N El Fuerte, 25 K. U.; Sinaloa (Osgood, N. Amer. Fauna, 18:55, Se

Perognathus artus Osgood, N. Amer. Fauna, 18:55, September 20, 1900, type from Batopilas, Chihuahua. Range. —See map 1 . Measurements. —Average of five adult topotypes (Osgood, op. cit. :55, 63): total length, 191; tail vertebrae, 106; hind foot, 24.6; occipitonasal length, 25.4; mastoidal breadth, 12.4; greatest width of interparietal, 7.1. Remarks. —Considerable individual variation has been noted in each of several populations of Perognathus goldmani artus . For example, in 14 adults from Cul