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)
56 Proceedings of the Biological Society of Washington.
Scapanus latimanus grinnelli suixsp. nov.*
Tijpe., adult cJ', skiu and skull, No. 17,785, Museum of Vertebrate Zoology, University of California, from Indei)endence (altitude, 3,900 feet), Inyo County, California; collected May 8, 1912, by JI. A. Carr.
General characters—H'xzq small; slightly larger than S. 1. occuUus or S. 1. minusculus, smaller than S. 1. sericntus ; color dark; skull short and high, broad interorbitally and through mastoids; rostrum short aiid wide.
Color.—Type, in worn and somewhat faded winter pelage: Upperparts between fuscous and fuscous-black; ventral j)arts slightly more grayish, stained on throat and chest with Dre.sden brown.
Measurements.—Type, measured in the flesh: Total length, 150;
tail vertebra', 2)1 ; hind foot, 21. Skull of type: Condylohasal length, 32.8; greatest length, 33.0; palatilar length, 13.1 ; breadth across mas¬
toids, 17.0; interorbital constriction, 7.8; maxillary tooth row, 10.4; mandibular molar-premolar row, 10.0.
Remarhs.—This subspecies is apparently the darkest form of the lati¬
manus gi’oup. It is known only from the type locality and only two specimens have been examined; the characters in these two, except for a supernumerary maxillary premolar in the topotype, are remarkably uniform.
Named for ])r. .toseph Grinnell in recognition of Ids valuable studies upon the I’acific coast fauna, and who has kindly granted me the privilege of describing this form from the collection of the Museum of Vertel)rate Zoology, University of California.
