NO. 1847. THE LADDER-BACKED WOODPECKERS— 0BERH0L8ER. 145 



white; a postociilar and a malar stripe of black, which meet on the 

 side of the neck, the malar stripe, however, more or less obsolete at 

 base of bill; nasal tufts and lower surface pale smoky b^o^^^lish, the 

 chin, sides, flanks, and crissum decidedly whitish; sides and middle 

 of breast and sides of body heavily spotted wdth black; flanks and 

 crissum barred with the same; lining of wing white, spotted with 

 black. 



Measurements. — Male:^ Wing, 94-99 (average, 96.5) mm.; tail, 



; exposed culmen, 17.5-20 (18.8); tarsus, 17; middle toe, 11.5- 



12.5 (12). 



Female: 2 Wmg, 90-94.5 (92.3); tail, ; exposed cuhnen, 16.5-18 



(17.3), tai-sus, 16-17 (16.5); middle toe, 11.5-12 (11.8). 



Type-locality. — Comitan, Cliiapas, Mexico. 



Geographical distnhution. — Southern Chiapas, Mexico: north to 

 Comitan and Tuxtla Gutierrez, south central Chiapas; east to San 

 Vicente, southeastern Chiapas; and west to Tuxtla Gutierrez. 



This form is easily to b^ separated from Dryohates scalaris hairdi 

 by its greatly inferior size; narrower postocular and malar stripes; 

 more restricted black bars on upper parts; lighter lower surface, which 

 is more heavily marked with spots — not streaks^of black. 



Only four birds examined, from the subjoined Mexican localities: 



Chiapas. — Comitan; San Vicente; Tuxtla Gutierrez. 



DRYOBATES SCALARIS PARVUS (Cabot). 



Picus parvus Cabot, Bopton Journ. Nat. Hist., vol. 5, 1845, p. 92. 

 Picus vagatus Cassin, Proc. Acad. Nat. Sci. Phila., 1863, p. 196 ("Mexico;" 

 i. e., Yucatan). 



Chars, suhsp. — Resemblmg Dryohates scalaris percus, but decidedly 

 smaller; postocular and malar stripes wider, the latter always reach- 

 ing bill; black bars on back rather narrower; primary coverts with 

 somewhat less white; and lower parts less heavily spotted. 



Measurements. — Male:^ Wing, 87-92 (average, 89.1) mm.; tail, 

 46-53.5 (48.4); exposed culmen, 18-20.5 (19.4); tarsus, 15-17 (16.3); 

 middle toe, 11-12.5 (11.5). 



Female:* Wing, 86-89.5 (87); tail, 46-49 (47.3); exposed culmen, 

 16-18 (16.9); tarsus, 15.5-16.5 (15.9); middle toe, 11-12 (11.5). 



Type locality. — Ticul, Yucatan, Mexico. 



Geographical distribution. — Northern Yucatan, Mexico: north to 

 Progreso, San Felipe, and La Vega; east to Cozumel Island, coast 

 of northeastern Yucatan; south to Cliichen Itza, north central Yuca- 

 tan; west to Merida, northwestern Yucatan. 



This well-marked subspecies differs greatly from Dryohates scalaris 

 hairdi, for it is much smaller; has paler upper parts, since the black 



1 Two specimens, from the State of Chiapas, Mexico. * Ten specimens, from Yucatan, Mexico. 



* Two specimens, from the same State. * Six specimens, from the same State. 



94428°— Proc.N M.vol.41— 11 10 



