in the open valley south of Diamante Pass."
The breast and upper back of both specimens from 10 mi. NW San Lorenzo,
are plumbeous-gray rather than pale dull gray. Also the lower back,
rump, abdomen, forehead, and crown more closely resemble the subspecies
_squamata_ rather than _C. s. pallida_. However, the upper backs of
both specimens are not so plumbeous-gray as on a male (32030) and a
female (32031) of the subspecies _squamata_ from 1 mi. N Chorro,
Durango, 6450 ft., July 11, 1952. The two birds from Durango appear to
be slightly darker than the Coahuilan specimens that approach the
subspecies _pallida_.
Burleigh and Lowery (1942:188-189) stated that one of their specimens
of _C. s. squamata_ obtained at Saltillo seems to be "very close to
_castanogastris_, suggesting that southeastern Coahuila is in the
region of intergradation between the two races." Aldrich and Duvall
(1955:17) indicated that _squamata_ and _castanogastris_ intergrade
near Sabinas. The two specimens that I have examined show no sign of
approach toward _castanogastris_. More specimens of Scaled Quail from
Coahuila are needed to permit accurate definition of the distribution
of the subspecies.
*_Cyrtonyx montezumae mearnsi_ Nelson.--The Harlequin Quail is locally
common in Coahuila; _C. m. mearnsi_ is present in northwestern Coahuila
(Aldrich and Duvall, 1955:20). Miller (1955a:162) stated that an area
in the head of Corte Madera Canyon of the Sierra del Carmen at 7500
feet was the principal location for _C. m. mearnsi_. He further
suggested that the Harlequin Quail breeds in the Sierra del Carmen and
remarked that Marsh took a male on September 7 at Jardin del Sur. He
added that the occurrence of _C. m. montezumae_ in northern Coahuila as
reported by Friedmann, Griscom, and Moore (1950:79) is "possibly an
error or was based on individual dark variants...." Baker noted the
Harlequin Quail (unidentified to subspecies) 9 mi. W and 1 mi. S Villa
Acuna, 1120 feet, on April 4, 1950.
*_Cyrtonyx montezumae montezumae_ (Vigors).--This subspecies of the
Harlequin Quail has been recorded from southeastern Coahuila. Ridgway
and Friedmann (1946:396) listed _C. m. montezumae_ from Saltillo. Baker
saw a pair of Harlequin Quail (unidentified to subspecies) at San
Antonio de las Alazanas on March 25, 1950. More collecting is necessary
for an understanding of the distribution and intergradation of these
subspecies in Coahuila.
*_Meleagris gallopavo inte
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