rus_ and
_C. zinseri_. These may be known and described as

=Cratogeomys gymnurus tellus= new subspecies

_Type._--Female, adult, skull and skin, No. 33454 Mus. Nat.
Hist., Univ. Kansas; from 3 mi. W Tala, 4300 ft., Jalisco,
Mexico; obtained on June 2, 1949, by J. R. Alcorn, original
No. 9376.

_Range._--North-central Jalisco; known from several
localities in the vicinity of Tala.

_Diagnosis._--Size large (see measurements); tail long,
naked; hind foot small; color pale for species, upper parts
Kaiser Brown (capitalized terms are of Ridgway, Color
Standards and Color Nomenclature, Washington, D. C., 1912),
bases of individual hairs Plumbeous, tips Hazel, underparts
creamy-white, bases of hairs Plumbeous; skull large,
relatively narrow, rugose; zygomatic breadth narrower
posteriorly than anteriorly; rostrum shallow, relatively
broad in males, narrower in females; interorbital region
broad; braincase narrow and flattened; basioccipital
relatively wide, especially anteriorly; mastoid processes of
squamosal large, knoblike; paroccipital processes long,
extending laterally over more than half the width of mastoid
bullae; upper incisors projecting anteriorly; maxillary
teeth relatively large.

_Comparisons._--From topotypes of _C. g. gymnurus_ from
Zapotlan, Jalisco, the most closely related subspecies, _C.
g. tellus_ differs in: Body smaller (total length averaging
338 instead of 341 in females and 356 instead of 369 in
males); hind foot smaller (averaging 45 instead of 50 in
females and 47 instead of 51 in males); color more brownish
above, creamy-white rather than buffy below; skull smaller,
especially in females (basilar length averaging 55.3 instead
of 57.5 in females and 57.7 instead of 60.5 in males),
narrower, and more rugose; zygomatic breadth less in females
(averaging 42.5 compared with 46.2), greater in males (48.0
compared with 46.7); zygomata more nearly parallel; auditory
bullae relatively smaller; mastoid processes of squamosal
larger, knoblike; paroccipital processes longer, extending
farther laterally; rostrum less massive; upper incisors
projecting anteriorly, instead of being strongly recurved;
maxillary teeth relatively larger.

From near-topotypes of _C. g. inclarus_ from the Sierra
Nevada de C