ua Nueva, 5500 ft.,
1; Domingo Canon, Sierra Guadalupe, 6700 ft., 11 mi. S and 4 mi. W
General Cepeda, 1; Carneros, 6800 ft., 6 (BSC); _1 mi. S Carneros,
6000 ft._, 4; 2 mi. W San Miguel, 5500 ft., 3; 8 mi. N La Ventura,
6000 ft., 10; La Ventura, 5600 ft, 6 (BSC).

+Cratogeomys castanops planifrons+ Nelson and Goldman

1934. _Cratogeomys castanops planifrons_ Nelson and Goldman, Proc.
Biol. Soc. Washington, 47:146, June 13, type from Miquihuana,
5000 ft., Tamaulipas (listed, by mistake, as southern Nuevo
Leon).

_Distribution._--Elevated montane valleys of Sierra Madre Oriental of
extreme southeastern Coahuila, south and east into southwestern Nuevo
Leon and Western Tamaulipas (see fig. 1).

_Remarks._--Specimens from Coahuila assigned to _planifrons_ compare
favorably with topotypes of this subspecies although they are
slightly larger in cranial dimensions (see tables 1 and 2). This
small subspecies is darker and slightly larger than _subnubilus_ but
in other ways is most closely related to _subnubilus_. _Cratogeomys c.
planifrons_ shows little relation to other adjacent subspecies,
including _tamaulipensis_, _subsimus_ and _rubellus_, all of which are
considerably larger and paler.

_Cratogeomys castanops planifrons_ is found in both deep and
shallow soils of the high, open valleys of the Sierra Madre Oriental;
in Coahuila it was taken at elevations as low as 7200 feet and as high
as 8700 feet.

_Specimens examined._--Total, 50, from: 4 mi. S and 6 mi. E Saltillo,
7500 ft, 7; 7 mi. S and 4 mi. E Bella Union, 7200 ft., 14; _12 mi. W
San Antonio de las Alazanas_, 16; _12 mi. S and 2 mi. E Arteaga, 7500
ft._, 11; 2 mi. E and 2 mi. N San Antonio de las Alazanas, 8700 ft, 2.

_Transmitted August 23, 1954._

25-5679

* * * * *

Transcriber's Notes:

Emphasis Notation:
_text_ - italicized
+text+ - bold
~text~ - small caps

Possible Typos Corrected
Aquanaval => Aguanaval

End of the Project Gutenberg EBook of Geographic Variation in the Pocket
Gopher, Cratogeomys castanops, in Coahuila Mexico, by Robert J. Russell and Rollin H. Baker

*** END OF THIS PROJECT GUTENBERG EBOOK POCKET GOPHER ***

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