DESCRIPTIONS OF NINE NEW MAMMALS COLLECTED 



BY E. W. NELSON IN THE STATES OF 



(JOLIMA AND JALISCO, MEXICO. 



BY ('. HART MERRIAM, M. D. 



The well known ornithologist, Mr. E. W. Nt-Lsoii, wliose zeal 

 and indefatigable energy have led liini to penetrate nian}^ remote 

 and little-known regions for the })urpose of collecting mammals 

 and birds, and whose efforts have l)een rewarded by the discov- 

 ery of many new species — from the Arctic regions as w^ell as the 

 arid deserts and lofty mountains of the United States — has re- 

 cently directed his steps into Mexico, in the interest of the 

 Ignited States Department of Agriculture. 



Diagnoses are liere given of nine new mammals contained in 

 the collections sent by him from Colima and Jalisco, in addition 

 to the new genus and species just described (Xeaumjjs ne/-S'o»./).* 

 Illustrations of cranial and dental characters Avill appear in a 

 later pai)er. 



Gcims Geomys. 



The collection contains three new pocket gophers of the genus 

 Geomy-^: a small species from the high mountains of Jalisco (6^- 

 ndsoiii); a large species from the plain of Colima (G.fiimosus), 

 and a large species from the valley of Zapotlan (6r. gymnurus). 

 They may be known from the following descriptions : 



Geomys nelsoni i^yi. nov. 



Type No. lUH old (^. U. S. National Museum (Department of Ayri- 

 cultuR- colk'ction). From north slope of tlie Sierra Nevada de Colima, 

 Jalisco, Mexic-o (altitude 1,0X0 meters, or (i,5()0 feet), April 11, 1S92. Col- 

 lected Ijy E. W. Nelson. (Original number, 24o6.) 



Measurements (in millimeters, taken from dry skin of type, 

 slightly overstuti'ed ; this is the largest and oldest of the 



*Proc. Biol. Soc AVash., vol. vii, Sept., 1892, pp. 159-103. 



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