Vol. XXVII, pp. 55-56 
March 20, 1914 
PROCEEDINGS 
or TIIK 
BIOLOGICAL SOCIETY OF WASHINGTON 
NEW MOLES OF THE GENUS SCAPANUS. 
P>V HARTLEY II. T. JACKSON. 
A continuation of my studies upon North American Talpidap 
for the U. S. Biological Survey, has shown that in order to 
properly elucidate the relationships of the forms of the genus 
Srnpdirus it is necessary to describe two new subspecies, diagno¬ 
ses of which follow: 
Scapanus latimanus sericatus snbs}). nov. 
Tiipe, adult 9 , skin and skull, No. 10!),5-18, U. S. National Mnsenin, 
Biological Survey Collection, I'roni Yosemite, Mariposa County, California; 
collected August JO, 1901, by W. K. Fisher. Original number, 2227. 
(General cJiaracters .—Smaller than S. 1. latimanus, darker and more 
grayish in fresh pelage; larger and darker than occuUm or minnsculus ; 
claws, especially of fore feet, longer and more slender than those of S. 1. 
latimanns ; sknll ndatively long, narrow, and Hat. 
Color. —Tyi)e, mostly in worn and faded summer pelage, fresh pelage 
apjxairing on the abdomen and Hanks; ui)i)er parts glossy olive-brown;* 
und('r parts slightly paler than hack; fresh pt'lage on abdomen dark 
monse gray. 
Measuremrnls. —Type, nu'asnred in the llesh: Total length, IGd ; tail 
vertel)ra‘, do ; hind foot, Jl. Skull of type: Coudylohasal length, dJ.T; 
greatest kmgth, palatilar length. Id.:); hn-adth across mastoids, 
hi.2; interorhital constriction, 7.2; maxillary tooth row, 11.0; mandi¬ 
bular molar-premolar row, 10.4. 
Ilcmarks.—S. 1. sericatus seems to be coidiued to the Yosemite region. 
It is intermediate in size between S. 1. latimanns and S. 1. occultns, in 
fresh pelage, is darker than either, and has a relativ('ly narrower skull. 
• Colors liero used aro those of Rol)ort itidffway in " Color Standards and Nomen¬ 
clature,” 1912. 
9—Prog. IUol. Soc. W.vsh., Vol. XXVI1, 1911. (nS) 
