_P. a. pergracilis_ and because of the name currently on the label
with Benson's initials.

~Perognathus longimembris panamintinus~ Merriam

In the current literature, Californian specimens of the little pocket
mouse stand identified as _Perognathus longimembris nevadensis_ from
Oasis and vicinity of Benton Station (Grinnell, Univ. California Publ.
Zool., 40:147, September 26, 1933). When one of us (Hall, Mammals of
Nevada, p. 360, July 1, 1946) reported specimens from southwestern
Nevada as _Perognathus longimembris panamintinus_ he did so on the basis
of study of specimens which included those from Oasis (in the California
Museum of Vertebrate Zoology) that he at that time (in ms.) identified
as _P. l. panamintinus_. Those specimens from Oasis have the hair on the
underparts white all the way to the base as also do specimens from
Morans, 5000 ft. (29583/41638 BS), in contrast to the plumbeous
underparts of _P. l. nevadensis_. It is on this basis that we identify
specimens from the places mentioned above as _Perognathus longimembris
panamintinus_. "Vicinity of Benton Station" as given by Grinnell (_loc.
cit._) is interpreted to include Morans, Mono County.

~Dipodomys agilis martirensis~ Huey

Elliot (Field Columb. Mus., Zool. Ser., Publ. 79, 3(12):221, August 15,
1903) referred specimens from Rosarito and Rosarito Divide, San Pedro
Martir Mts., Baja California, to _Perodipus_ [= _Dipodomys_] _agilis_.
According to the currently known distribution of _Dipodomys agilis_ in
Baja California (see Huey, Trans. San Diego Soc. Nat. Hist., 11:237,
April 30, 1951), the specimens seemed likely to belong to the subspecies
_D. a. martirensis_. An examination of the specimens (10644, 10690-10693
CMNH from Rosarito, and 10694 from Rosarito Divide) shows that, on the
basis of large ear and comparatively narrow braincase, they are in fact
referable to _D. a. martirensis_. Only No. 10693, with its broader
braincase, seems atypical. Comparative materials used are in the Chicago
Natural History Museum as follows: _D. a. martirensis_: Baja California:
San Matias Spring, 2. _D. a. simulans_: Baja California: Ensenada, 8.
California: Dulzura, 1 (topotype); San Luis del Rey, 3.

~Dipodomys agilis simulans~ (Merriam)

J. A. Allen (Bull. Amer. Mus. Nat. Hist., 5:184, August 18, 1893) listed
as _Perodipus agilis_ a specimen (6306/4941 AMNH) from Valladares, Baja
California. Subspecies of this species were subsequently named without