BIRDS OF NORTH AND MIDDLE AMERICA. 43 



RroGWAY, Proc. Biol. Soc. Wash., xxi, 1908, 192 (geog. rauge). — Carhiker, 

 Ann. Carnegie Mus., vi, 1910, 603 (Caribbean foothills, n. e. Costa Rica; 

 habits).— Ferry, Pub. 14G, Field Mus. N. II., orn. ser., i, no. 6, 1910, 271 

 (Guayabo, Costa Rica). 

 Thamnophilus intermedius Ridgway, Proc. U. S. Nat. Mus., x, Aug. G, 1888, 581 

 (Truxillo, Honduras; coll. U. S. 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 7nale.— 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 Panama (Divala; 

 Chitra; David; Bugaba; Calovevora), through Costa Rica (Pozo Azul 

 de Pirris; Buenos Aires; Boruca; Lagarto; Paso Real; Puriscal; San 

 Mateo; Bebedero; Coyolar; La Palma de Nicoya; Barranca de Punta- 

 renas; San Carlos; Surubres; Miravalles; San Jose; Sarchi; Coralillo; 

 Bolson; El General; Boca de Barranca; Escazti?), Nicaragua (Sucuyil; 

 Chinandega; Volcan de Chinandega; 2 leagues south of Lake Managua; 

 Realejo) and Guatemala (Naranjo; San Jose; Lake Amatitlan) to 

 Chiapas (San Bartolome). 



(?) Thamnophilus doliatus (not Lanius doliatus Linnaeus) Cabanis, Journ. fiir 

 Orn., 1861, 242 (Costa Rica). 



Thamnophilus doliatus Salvin, Proc. Zool. Soc. Lond., 1867, 144 (David, Pan- 

 ama). — BoucARD, Proc. Zool. Soc. Lond., 1878, 60 (San Mateo, Costa Rica). — 

 Nutting, Proc. U. S. Nat. Mus., vi, 1884, 385 (Sucuya, Nicaragua; habits; 

 notes). — Zeledon, Anal. Mus. Nac. Costa Rica, i, 1887, 114, part (Pozo 

 Azul, Costa Rica). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1891, 

 202, part (Chinandega, Volcan de Chinandega, and Sucuya, Nicaragua; San 

 Jose, San Mateo, Sarchf, Bebedero, La Palma de Nicoya, and Pozo Azul, 

 Costa Rica; David and Bugaba, Panamd,). — Cherrie, Expl. Zool. Merid. 

 Costa Rica, 1893, 41 (Lagarto, Boruca, and Buenos Aires, s. w. Costa Rica). — 

 Underwood, Ibis, 1896, 440 (Bebedero, Costa Rica). — Dearborn, Pub. 125, 

 Field Mus. N. H., 1907, 109 (Lake Amatitlan and San Jos6, Guatemala, up 

 to 4,000 ft.).— Bangs, Auk, xxiv, 1907, 296 (Boruca, Paso Redl, 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. 



c Thirteen si^ecimens. 



