BIRDS OF NORTH AND MIDDLE AMERICA. 43 
-  Ripeway, Proc. Biol. Soc. Wash., xxi, 1908, 192 (geog. range).—CaRnrikER, 
Ann. Carnegie Mus., vi, 1910, 603 (Caribbean foothills, n. e. Costa Rica; 
habits)—Ferry, Pub. 146, Field Mus. N. H., orn. ser., i, no. 6, 1910, 271 
(Guayabo, Costa Rica). 
Thamnophilus intermedius Ripaway, Proc. U. 8. Nat. Mus., x, Aug. 6, 1888, 581 
(Truxillo, Honduras; coll. U. 8. Nat. Mus.). 
THAMNOPHILUS DOLIATUS PACIFICUS Ridgway. 
PACIFIC ANTSHRIKE. 
Similar to T. d. mexicanus but adult male with under parts decidedly 
paler (black bars decidedly, sometimes very much, narrower than 
white interspaces, and black streaks on throat very narrow); adult 
female not constantly if at all different, but sometimes paler, either 
above or below. 
Adult male.—Length (skins), 141-163 (149); wing, 67-74.5 (70.1); 
tail, 55-65 (58.4); culmen, 18-20.5 (19.4); tarsus, 25-27.5 (26.1); 
middle toe, 14.5-16 (15.3).° 
Adult female.—Length (skins), 130-158 (145); wing, 65.5-72 (68.4); 
tail, 55-63 (57.8); culmen, 17-19.5 (19.3); tarsus, 24.5-27 (26.3); 
middle toe, 15-16.5 (15.5).° 
Pacific slope of Central America, from western Panamé (Divala; 
Chitra; David; Bugaba; Calovévora), through Costa Rica (Pozo Aztil 
de Pirris; Buenos Aires; Boruca; Lagarto; Paso Real; Puriscél; San 
Mateo; Bebedero; Coyolér; La Palma de Nicoya; Barranca de Punta- 
renas; San Carlos; Surubres; Miravalles; San José; Sarchi; Coralillo; 
Bolsén; El General; Boca de Barranca; Escazt?), Nicaragua (Sucuy4; 
Chinandega; Volcan de Chinandega; 2 leagues south of Lake Manégua; 
Realejo) and Guatemala (Naranjo; San José; Lake Amatitlin) to 
Chiapas (San Bartolomé). 
(?) Thamnophilus doliatus (not Lanius doliatus Linnzeus) Casanis, Journ. fiir 
Orn., 1861, 242 (Costa Rica). 
Thamnophilus doliatus Satvin, Proc. Zool. Soc. Lond., 1867, 144 (David, Pan- 
ama).—BovucarpD, Proc. Zool. Soc. Lond., 1878, 60 (San Mateo, Costa Rica).— 
Nurtine, Proc. U. 8. Nat. Mus., vi, 1884, 385 (Sucuy4, Nicaragua; habits; 
notes).—ZELEDON, Anal. Mus. Nac. Costa Rica, i, 1887, 114, part (Pozo 
Aztl, Costa Rica).—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1891, 
202, part (Chinandega, Volcan de Chinandega, and Sucuy4, Nicaragua; San 
José, San Mateo, Sarchf, Bebedero, La Palma de Nicoya, and Pozo Azil, 
Costa Rica; David and Bugaba, Panam4).—Cuerriz, Expl. Zool. Merid. 
Costa Rica, 1893, 41 (Lagarto, Boruca, and Buenos Aires, s. w. Costa Rica).— 
UnpERWwooD, Ibis, 1896, 440 (Bebedero, Costa Rica).—Drarsorn, Pub. 125, 
Field Mus. N. H., 1907, 109 (Lake Amatitl4n and San José, Guatemala, up 
to 4,000 ft.).—Banes, Auk, xxiv, 1907, 296 (Boruca, Paso Real, Lagarto, 
and Barranca de Puntarenas, w. Costa Rica). 
@ The adult male is almost precisely similar in coloration to that of Thamnophilus 
doliatus fraterculus Berlepsch and Hartert (Novit. Zool., ix, April, 1902, 70; Alta- 
gracia, Venezuela; coll. Count von Berlepsch) of Venezuela and Tobago. 
b Nineteen specimens. 
¢ Thirteen specimens. 
