284 NORTH AMERICAN BIRDS. 
d', Back barred with black and white; wings black, spotted and 
barred with white; middle line of breast unspotted. 
é. Forehead smoky brownish, like nasal tufts (the ground-color 
sometimes nearly hidden, however, by whitish spotting) ; 
crown often speckled, but not streaked, with white; lateral 
tail-feathers with inner web (sometimes outer web also) 
barred for entire length, or at least for all of exposed por- 
tion; ground-color of lower parts usually smoky white, or 
pale smoky brownish. Adult male with whole crown red, 
or spotted with red (unless the red tips to feathers happen 
to be worn off), the red immediately preceded by a white 
speck or spot. 
j'. Outer tail-feathers barred regularly with black, on both 
webs, for whole length. 
g. Smaller (length about 6.00-6.75, wing less than 
3.90). 
WY’. Wing 3.80-3.85 (8.82), tail 2.30-2.40 (2.33), ex- 
posed culmen .70-.79 (.74); black stripes on 
side of head narrower, the malar stripe usu- 
ally whitish anteriorly; black bars on back 
usually appreciably narrower than the white 
ones; scarlet on head of male lighter. Hab. 
Southeastern Mexico (Vera Cruz, Puebla, 
etc.). 
D. scalaris (WaGL.). Ladder-backed 
Woodpecker.! 
h?. Wing 3.30-3.55 (3.44), tail 2.10-2.20 (2.14), ex- 
posed culmen .60-.75 (.69); black stripes on 
sides of head broader, the malar stripe usu- 
ally dusky or blackish anteriorly ; black bars 
on back usually a little broader than the 
white ones; scarlet on head of male darker. 
Hab. Yucatan. 
D. scalaris parvus (Cazor). Cabot’s Ladder- 
backed Woodpecker? 
g. Larger (length 7.00-7.75, wing 3.90-4.25). 
Wing 3.90-4.25 (4.06), tail 2.45-2.75 (2.59), ex- 
posed culmen .83-.93 (.87); in coloration 
not constantly different from true scalaris, 
except that the black stripes on sides of 
head are usually broader, the lower one 
usually more extended toward sides of 
breast. Eggs 82x .63. Hab. Table-lands 
1 Picus scalaris WaGL., Isis, 1829, 511. 
2 Picus parvus Caxot, Bost. Jour. N. H. v. 1849, 90. 
