272 MICROTIN^ 



loringi, with black hairs more conspicuous; sides ash grey, 

 strongly suffused with buffy; belly creamy white; side spots 

 dusky grey. 



Skull similar to that of E. g. gapperi in large size and broad 

 braincase ; zygomatic arches low and flaring out, so that the inner 

 instead of the outer side shows in a top view; palate approxi- 

 mately straight edged ; pterygoids wide, flat, and close together. 

 Auditory bullae as large as in E. g. gapperi, but less rounded. 

 Incisors slender and pale yellow ; molars large. 



For external and cranial measurements, see table at end of 

 volume. 



Remarks. — Mr. Bailey says that the skulls show that the two 

 specimens known are " not fully adult, though probably full 

 grown. Though based on so scanty material, the characters 

 distinguishing the species are fairly pronounced. Its range is 

 isolated, and widely separated from that of any other members 

 of the genus by open prairie country and a wide belt of the 

 Transition Zone. There seems to be no valid reason for consider- 

 ing it a subspecies. It is even difficult to decide to which form it 

 is most nearly related." 



30. Evotonays carolinensis Merriam. 

 1888. Evotomys carolinensis Merriam, Araer. Journ. Sci., [3], 36, 

 p. 460; Bailey, Proc. Biol. See. Washington, 11, p. 130; Miller, 

 "List," 1912, p. 212; 1924, p. 403. 



Tyfe.—VB. Nat. Mus., No. 3660; adult female, collected 

 August 11, 1887. 



Type locality .—Ro&n Mountain, Mitchell County, North 

 CaroHna. Altitude 6000 feet. 



Range. — Boreal parts of Allegheny Mountains of North Caro- 

 lina, Tennessee, and West Virginia [also Virginia and Maryland]. 



Characters. — Size large, hind-foot 20 mm. or more ; tail long. 

 Colour dark and rich. Molars larger than in any other American 

 species. 



Summer pelage : dark chestnut above, blending gradually 

 with bistre of sides, face, and rump ; darkened everywhere above 

 with numerous black hairs ; belly varying from white to buffy 

 ochraceous, the under fur showing through. Ears dusky. Feet 

 greyish brown. Tail indistinctly bicoloured, blackish above and 

 at tip, grey below. Side glands of males covered by incon- 

 spicuous spot of slightly darker fur. Winter pelage : paler and 

 brighter; back brighter ferruginous, belly averaging whiter; 

 sides buffy ochraceous ; ears shghtly .rufous tipped. Young 

 darker than adults. 



Skull larger, wider and more angular than in E. gapperi; with 

 relatively smaller, flatter and more elongated auditory bullae and 

 wider basioccipital. Cheek-teeth larger, wider and heavier. 

 Enamel of upper incisors darker yellow. 



