December 28, type from "The Tanks," 12 mi. from
Point Isabel, Padre Island, Texas.

1904. [_Citellus spilosoma_] _annectens_, Trouessart, Catalogus
Mammalium ..., p. 340.

Thirteen specimens (Nos. 35441-35453) were collected. All are from the
north side of the tidal inlet. Although the ground squirrels were easily
trapped, it was difficult to obtain a perfect skin because the gulls
(_Larus_ sp.) pulled the skin off of the distal part of the tail as soon
as a squirrel was secured in a trap. The specimens seem not to differ
from Texan specimens from the type locality and Mustang Island.

Dipodomys ordii parvabullatus new subspecies

Ord Kangaroo Rat

_Type._--Male, adult, skull and skin, No. 35454, Mus. Nat. Hist. Univ.
Kansas, from island, 88 miles south and 10 miles west of Matamoros,
Tamaulipas, Mexico; obtained 19 March 1950 by E.R. Hall and Curt von
Wedel; original No. 6778 E.R. Hall.

_Range._--Islands along coast of Tamaulipas, Mexico.

_Diagnosis._--Size small (see measurements). Color pale; entire dorsal
surface Light Ochraceous-Buff (Capitalized color terms according to
Ridgway: Color Standards and Color Nomenclature, Washington, D.C.,
1912), purest on sides and flanks, upper parts lightly suffused with
black; cheeks white; plantar surfaces of hind feet, dorsal and ventral
stripe of tail, and anterior face of ear brownish. Skull small; auditory
bullae smaller (actually and relative to remainder of skull) than in any
other known kind of _Dipodomys_, excepting the one from Mustang Island,
Texas (named beyond) in which the breadth is approximately the same;
rostrum and interorbital region narrow.

_Comparisons._--From _Dipodomys ordii sennetti_ (Allen), of the
mainland of Texas, _D. o. parvabullatus_ differs in: Color paler on
pigmented areas; white areas more extensive; skull smaller, in all parts
measured, except the nasals which are slightly longer. From _Dipodomys
ordii compactus_ of Padre Island, Texas, _D. o. parvabullatus_ differs
in: Tail and hind foot shorter; skull smaller in all parts measured,
especially so in breadth across maxillary processes of zygomatic arches.

_Remarks._--_D. o. parvabullatus_ resembles _D. o. sennetti_ in external
proportions and _D. o. compactus_ in cranial proportions.

No difference was detected between specimens from the two sides of the
tidal inlet 89 miles south of Matamoros. Only one of the 14 specimens is
of the light color phase (upper parts