Appendix of reprint of Ord (_supra_), p. 19.

1792. _Sciurus cinereus_ Schreber, Saeuget., 4:766. Type
locality, eastern United States, probably New York State.
(_Nec Sciurus cinereus_ Linnaeus.)

1830. _Sciurus leucotis_ Gapper, Zool. Jour., 5:206. Type
locality, region between York and Lake Simcoe, Canada.

1849. _Sciurus migratorius_ Audubon and Bachman, Quad. N.
Amer., 1:265 (based on _S. leucotis_ Gapper).

1877. _Sciurus carolinensis_ var. _leucotis_, J. A. Allen,
Monogr. N. Amer. Rodentia, Sciuridae, p. 700 (_et auct._).

~Sciurus niger rufiventer~ Geoffroy

Two specimens (36192/48550, a young male with unworn teeth, and
36193/48551, an adult male with much worn teeth, both in the United
States Biological Surveys Collection in the National Museum) were
recorded by Bailey (N. Amer. Fauna, 25:75, 1905) as _Sciurus
ludovicianus_ from Gainesville, Texas. Bailey (_loc. cit._) further
stated that if the name _Sciurus rufiventer_ Geoffroy proved usable it
would apply to the specimens from Gainesville. Since the name
_rufiventer_ was revived there would be no question concerning the
identity of these specimens had not Lowery and Davis (Occas. Papers,
Mus. Zool., Louisiana State Univ., 9:172, 1942) assigned three specimens
(not seen by us) to _Sciurus niger limitis_ Baird from a point only
thirteen miles northwesterly. Lowery and Davis (_loc. cit._) say that
their specimens are intergrades (presumably with _rufiventer_) and
Bailey (_loc. cit._) noted that his two specimens from Gainesville "are
in size and color nearer to _ludovicianus_ [= _rufiventer_] than to
typical _limitis_." Examination of the two specimens from Gainesville
convinces us that Bailey was correct and the specimens therefore are
referable to _Sciurus niger rufiventer_. More in detail, the color
agrees with that of _rufiventer_ and differs from that of _limitis_ and
from that of darker specimens of _Sciurus niger ludovicianus_ (in the
restricted sense used by Lowery and Davis, _op. cit._: 104). Also the
size is larger than in _limitis_ and as in _rufiventer_ or
_ludovicianus_. Selected measurements of Nos. 36192/48550 and
36193/48551 are, respectively, as follows: Total length, 505, 500;
length of tail, 237, 228; length of hind foot, 72, 70; basilar length of
Hensel, 48.5, 48.6; zygomatic breadth, 35.1, 36.0; length of nasals,
21.4, 22.3; alveolar length of maxillary tooth-row, 11.8, 11.1; width
acros