172 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. III. 



ORDER INSECTIVORA. 



GENUS SOREX. 

 Sorex *oreinus. Sp. nov. 



Type locality. Aguaje de las Fresas, San Pedro Martir moun- 

 tains, Lower California, Mexico, 6,000 feet elevation. 



Gen. char. Similar to S. vagrans, but darker and without any 

 of the russet coloring of that species, and darker on under parts. 

 Skull has the rostrum shorter, the brain case flatter, occipital 

 w region lower and teeth smaller. 



Color. Upper parts sepia, beneath dark gray (in one speci- 

 men blackish); hands and feet whitish; ears sepia. 



Measurements. Type: total length, 103; tail vertebrae, 43; 

 hind foot, 12; ear, 6. Extremes of four specimens: total length, 

 103-110; tail vertebrae, 37-43; hind foot, 11.5-12; ear, 6-8.5. 

 Skull: occipito-nasal length, 15 (16); Hensel, 14 (14.5); inter- 

 orbital constriction, 3 (3); length of rostrum, 9.5 (10.2); palatal 

 length, 6 (7). 



This shrew while nearly allied to S. vagrans has sufficient 

 differences to separate it from that species, which belongs to the 

 northwestern coast region and British Columbia. It is a much 

 darker animal than vagrans, but about the same size, with a 

 smaller skull and smaller teeth. The skull measurements in 

 parentheses are those of S. vagrans. 



ORDER CHIROPTERA. 



GENUS MYOTIS. 

 Myotis milleri. Sp. nov. 



Type locality. La Grulla, San Pedro Martir mountains, Lower 

 California, Mexico, 8,000 feet elevation. 



Gen. char. Fur long; calcar like that of M. evotis, of which 

 species this one is an ally; ears very large, reaching beyond end 

 of nose and rather pointed at tip; wings from base of foot; color 

 very pale. Skull: forehead rising gradually from rostrum; occi- 

 put rounded; rostrum broad; no occipital crest. 



Color. Upper parts broccoli brown with a tinge of russet; 

 under parts whitish or creamy white, the base of all the hairs on 

 the body being blackish, and this hue is conspicuously shown 



, mountaineer. 



