d Tamaulipas. Nos. 31604 and 32701 represent the
first records of _D. v. intermedius_ from Coahuila.

*_Dendrocopos scalaris cactophilus_ (Oberholser).--_Specimens
examined:_ total 2: [Female] 31042 from 7 mi. S, 2 mi. E Boquillas, 800
ft., March 1, 1952; and [Female] 31043 from 10 mi. S, 5 mi. E
Boquillas, 1500 ft., March 3, 1952.

These specimens of the Ladder-backed Woodpecker show signs of
intergradation with _D. s. symplectus_. Both specimens are pale enough
above for _D. s. symplectus_, but the wing and the tail of each (wing,
102, 103 mm.; tail, 60, 65 mm.) are too long for _symplectus_. This
suggestion of intergradation is not unexpected because _symplectus_
occurs in northeastern Coahuila and _cactophilus_ in the Chisos
Mountains of Texas. Miller (1955a:166) also obtained one female _D. s.
cactophilus_ from the Sierra del Carmen that suggested intergradation
with _symplectus_.

Miller (_loc. cit._) wrote that _D. c. cactophilus_ was found chiefly
in the oaks and was common in the lower oak belt at 5000 feet. The
upper limit of the range of the Ladder-backed Woodpecker, according to
Miller, is 6800 feet. He reported the species as breeding in the Sierra
del Carmen.

Miller (1955b:317) took a hybrid woodpecker representing a cross
between _Dendrocopos villosus_ and _Dendrocopos scalaris_ in the Sierra
del Carmen, where, although Ladder-backed Woodpeckers were common, he
found no Hairy Woodpeckers.

**_Dendrocopos scalaris symplectus_ (Oberholser).--_Specimens
examined:_ total 2: [Male] 32058 from 2 mi. W Jimenez, June 20, 1952;
and [Male] 31667 from Sierra Guadalupe, Domingo Canyon (=10 mi. S, 14
mi. W General Cepeda), 6700 ft., April 18, 1953.

This Ladder-backed Woodpecker, according to the AOU Check-list
Committee (1957:327) and Oberholser (1912:156), occurs in Texas (east
of Pecos), northeastern Coahuila, Nuevo Leon, and Tamaulipas. The area
of intergradation of _D. s. symplectus_ and _giraudi_ is in
southeastern Coahuila. The dark smoky underparts and the equal size of
the white and black bars of the upper parts of No. 31667 suggest
intergradation with _D. s. giraudi_. Yet, the size of the wing
indicates that this specimen is closer to _D. s. symplectus_. No. 32058
has characters of typical representatives of _D. s. symplectus_.
Burleigh and Lowery (1942:193) reported _D. s. symplectus_ "in the
desert country west of Saltillo." Ridgway (1914:257) listed the
Ladder-backed Woodpecker from Sabinas. Cory