DESCRIPTIONS OF FOUR NEW POCKET MICE FROM 

 LOWER CALIFORNIA, COLLECTED BY WALTER 

 E. BRYANT. 



BY DR. C. HART MERRIAM. 



Some time ago Mr. Walter E. Bryant sent me a col- 

 lection of Pocket Mice, obtained by himself during his 

 explorations in the Peninsula of Lower California. The 

 collection comprises 40 specimens (skins and skulls), 

 chiefly from the Cape Region and adjacent Islands of 

 San Jose and Santa Margarita, and also from Comondu 

 near the central part of the Peninsula. Critical examin- 

 ation of this material shows it to contain four unde- 

 scribed forms, all in the sub-genus Chcetodipiis, three of 

 which belong to the spinatiis group — previously known 

 from a single species inhabiting the Colorado Desert. 

 The fourth is a small representative of 'Cao, penicillatus 

 group, the range of which is thus carried southward to 

 San Jorge, near Comondu. Unfortunately only a single 

 specimen was obtained, the large series from Comondu 

 consisting wholly of a member of the spinatiis group in- 

 termediate between sptnatus and peninsnlcB. The largest 

 and handsomest of the new species was found on San 

 Jose Island, and it gives me much pleasure to associate 

 with it the name of Mr. Bryant, who has done more than 

 all others to make known the fauna of this part of 

 Mexico. 



The accompanying figures belong to the U. S. Depart- 

 ment of Agriculture. Permission to use them in the 

 present connection was granted through the courtesy of 

 Dr. Chas. W. Dabney, Jr., Assistant Secretary of Agri- 

 culture. 



2d Ser., Vol. IV. September 25, 1894. 



