BIRDS OF NORTH AND MIDDLE AMERICA. 727 



Adult female.— Length (skins), 95-104 (98.3); wing, 45.5-47 (46.3); 

 tail, 42-43.5 (42.8); exposed culmen, 11-12.5 (11.7); tarsus, 16.5-18 

 (17); middle toe, 9-9.5 (9.2).« 



Veragua (Chitra) to Caribbean coast of Province of Santa Marta, 

 Colombia (Bonda; Santa Marta). 



(?) lOiilieivora] bilineata Bonaparte, Consp. Av., i, 1850, 316 (Cartagena, Colom- 

 bia; coll. Berlin Mus. ; ex Cabanis, manuscript).!' 



(?) Poliopiila bilineata Sclatbr, Proc. Zool. Soc. Lond., 1855, 12 (Cartagena). — 

 Salvin and Godman, Biol. Centr.-Am., Avea, i, 1879, 52, part. 6 — Shakpe, 

 Cat. Birds Brit. Mus., x, 1885, 452, part." 



(?) P[^olioptila] bilineata Hellmayb, Tierreich, 18 Lief., 1903, 27, part (n. coast 

 Colombia). 

 ' Poliopiila bilineata Baihd, Review Am. Birds, 1864, 72. — Bangs, Proc. Biol. Soc. 

 Wash., xii, 1898, 144 (Santa Marta, Colombia). — Allen, Bull. Am. Mus. 

 N. H., xiii, 1900, 181 (Bonda, Santa Marta). 



(?) [PolioptikL] bilineata Sclater and Salvin, Nom. Av. Neotr., 1873, 4, part. 



The following citations pertain to South American localities, and 

 -may or may not represent the true P. hilineata: 



Poliopiila bilineata Sclater, Proc. Zool. Soc. Lond., 1860, 273 (Babahoyo, w. 

 Ecuador). — Salvin and Godman, Biol. Centr.-Am., Aves, i, 1879, 52, part 

 (Colombia; Ecuador). — Shahpe, Cat. Birds Brit. Mus., x, 1885, 452, part 

 (Babahoyo, Esmeraldas, Guayaquil, and Puna I., w. Ecuador; Pacasmayo, 

 Peru). — ^Taczanowski and Berlepsch, Proc. Zool. Soc. Lond., 1885, 71 

 (Yaguachi, Ecuador). — SALVADORiand Festa, Boll. Mus. Zool., etc., Torino, 

 XV, no. 357, 1899, 3 (Babahoyo, Savana de Guayaquil, Vinces, and Puntilla 

 de Santa Elena, w. Ecuador). — Goodfellow, Ibis, 1901, 312 (Santo Domingo, 

 w. Ecuador, 1,000 ft.). 



P[olioptila'] bilineata Hellmayr, Tierreich, 18 Lief., 1903, 27, part (w. Ecuador; 

 n. Peru). 



[Culicivora} bilineata Heine and Reichenow, Nom. Mus. Hein. Orn., 1882, 24 

 (Esmeraldas, w. Ecuador). 



Poliopiila albilora (not P. albiloris Sclater and Salvin) Taczanowski, Proc. Zool. 

 Soc. Lond., 1877, 319 (Tumbez, Peru). 



Poliopiila albiloris Taczanowski, Proc. Zool. Soc. Lond., 1879, 223 (Pacasmayo, 

 n. Peru); Orn. de P^rou, i, 1884, 452 (Guadalupe, Tumbez, Lechugal, and 

 Pacasmayo, Peru). 



POLIOPTILA SUPERCILIARIS SUPERCILIARIS Lawrence. 

 LAWRENCE'S GNATCATCHER. 



Similar to jP. hilineata but decidedly smaller, with tail relatively 

 shorter, feet weaker, and coloration much darker; gray of back, etc., 

 dark bluish slate-gray, almost slate color; white of under parts 

 strongly shaded laterally and across chest with pale bluish gray. 



a Three specimens. 



6 Whether Bonaparte's type really represents this form or P. guperdliaris can only 

 be determined by examination of the type. My assumption that it probably belongs 

 here is based on the locality. 



"Without examination of specimens it is of course impossible to say which of the 

 localities designated, if any, relate to the present form. 



