REVISION OP THE JUMPING MICE OF THE GENUS ZAPUS. 35 



slightly smaller skulls than usual, but are otherwise perfectly typical. 

 I have also examined two specimens from western Pennsylvania, col- 

 lected by Mr. W. E. Clyde Todd, and have myself collected a speci- 

 men in the mountains at Finzel, in Garrett County, Md. None of 

 these show any approach to Z. insignis roanensis from Eoan Mountain, 

 North Carolina. Mr. S. N. Ehoads writes me that he has also taken 

 the species at Summit, Cambria County, Pa. 

 Specimens examined. Total number, 107, from the following localities : 



New Brunswick: Restigouche Eiver (type locality), 3. 



Nova Scotia: Halifax, 3; James River, 4. 



Ontario : North Bay, 6. 



New Hampshire: Antrim, 1; Chocorua^S; Dublin, 3; Fabyans, 1; Franco- 

 nia, 4; Profile Lake, 10. 



Vermont: Mount Mansfield, 4. 



Massachusetts : Mount Grey lock, 1. 



New York: Cascadeville, 4; Catskilla, 4; Elizabethtown, 10; Glenville, 1; 

 Lake George, 1; Peterboro, 30. 



New Jersey: Lake Hopatcong, 3. 



Pennsylvania: Cherry Spring, Potter County, 1; Eaglesmere, 2; Kingston, 

 Westmoreland County, 1; Mount Pocono, 1. 



Maryland: Finzel, Garrett County (6 miles north of Frostburg), 1. 



ZAPUS (NAPJEOZAPUS) INSIGNIS ROANENSIS subsp. nov. Roan Mountain 

 Jumping Mouse. 



Type from Magnetic City, foot of Roan Mountain, North Carolina, No. 66283, $ ad., 

 U. S. Nat. Museum, Biological Survey Coll. Collected May 22, 1894, by A. G. 

 Wetherby. 



Geographic distribution. Known only from Eoan Mountain, North 

 Carolina. 



General characters. Smaller and darker than typical Z. insignis, with 

 smaller, narrower skull. 



Color. Sides bright tawny ochraceous ; entire upper parts, including 

 ears, considerably darker than in typical Z. insignis. Beneath, pure 

 white; amount of white on tail averaging less than in Z. insignis. 



Cranial characters. Skull similar to that of Z. insignis, but smaller 

 and more slender throughout; mandible much more slender, especially 

 in region of molars; interorbital constriction very slightly less; frontal 

 region much less swollen; brain case narrower; fronto palatal depth 

 about the same. 



Measurements. Sixteen specimens from Eoan Mountain average: 

 Total length, 220; tail vertebra, 131 ; hind foot (dry), 29.5. Skull: Six 

 adult skulls from Eoan Mountain average: Basilar length, 18.8; zygo- 

 matic breadth, 11.7; mastoid breadth, 10.1; interorbital constriction, 

 4.7; incisor to postpalatal notch, 8.8; foramen magnum to postpalatal 

 notch, 8; fronto palatal depth at middle of molar series, 6.2. 



General remarks. The collection of the Biological Survey contains 

 24 specimens of this form, collected from May to September. As in 

 typical Z. insignis. there is very little seasonal variation. A young 

 individual, about one-third grown, collected at the type locality Sep- 

 tember 11, 1892, by Dr. C. Hart Merriam, resembles adults in color, 



