FAM. REGULIDA= 17 
18. Polioptila nigriceps nigriceps Baird. 
Polioptila nigriceps Baird, Rev. Amer. Birds. p. 69 (1864) (Mazatlan, Sinaloa, Mexico). 
Polioptila nigriceps yestricta Brewster, Auk, Vol. 6, p. 97 (1889) (Alamos, South Sonora, Mexico). 
Hab. Western Mexico, from southern Sonora (Alamos, Culiacan) to Oaxaca (Tehuantepec, Santa 
Efigenia, Puerto Angel, Huilotepec, Tapana, Cuicatlan etc.); Salvador (La Union) ? 
1g. Polioptila livida livida (Gmelin) 1). (Plate, Figs. 6, 6a.) 
Motacilla livida Gmelin, Syst. Nat. Vol. 1, 1, p. 981 (1789) (based on « Figuier de Madagascar » Daubenton, 
Pl. Enl. pl. 705, f. 3 [= 2]; locality erroneous, we substitute Cayenne as terra typica). 
Polioptila buffont Sclater, Proc. Zool. Soc. Lond. 1861, p. 127 (1861) (part. 
; « Guiana [== Cayenne] et [errore!]| 
Nova Grenada »; Cayenne to be considered as type locality). 
Hab Surinam (Paramaribo); French Guiana (Cayenne, Roche-Marie, Saint-Jean du Maroni), Brazilian 
Guiana (Amapa) and Lower Amazons (Para, Santarem; Urucurituba, left bank of the Rio Tapajoz). 
20. Polioptila livida innotata Hellmayr. 
Polioptsla buffont tnnotata Hellmayr, Novit. Zool. Vol. 8, p. 359 (1901) (North Brazil [Rio Branco], British Guiana 
[Quonja, Aunai] : types from Forte do Rio Branco, North Brazil). 
Hab. North Brazil : Forte do Sao Joaquim, on the Rio Branco; and British Guiana (Quonja, Aunai, 
R. Rupununi). 
21. Polioptila livida leucogasira (\Vied). 
Sylvia leucogastva Wied, Beitr. Naturg. Brasil. Vol. 3, 11, p. 710 (1831) (province of Bahia, East Brazil). 
Culicivora atricapilla Swainson, Zool. Ill. (new ser.), Vol. 2, pl. 57 (1832) (no locality). 
Hab. Eastern Brazil, from Bahia to Pernambuco. 
22. Polioptila livida plumbiceps Lawrence. 
Polioptila plumbiceps Lawrence, Proc. Acad. Nat. Sc. Philad. Vol. 17, p. 37 (1865) (Venezuela; = male juv.). 
Polioptila sclateri Sharpe, Cat. Birds Brit. Mus. Vol. 10, p. 449 (1885) (Venezuela). 
| Polioptila nigriceps| anteocularis 2) Hellmayr, Novit. Zool. Vol. 7, p. 537 (1900) (Bogota, Colombia). 
Hab. Northern Venezuela, from state of Cumana to La Guayra and Caracas, including Margarita Island, 
southward to the Rio Apuré (San Fernando), the Orinoco-River (Maipures, Ciudad Bolivar, Alta- 
gracia) and its southerly tributary, the Caura; west to Colombia (Bogota- collections; Cauca Valley; 
and, according to Sharpe, Valencia, Sierra Nevada de Santa Marta). 
23. Polioptila livida parvirostris Sharpe. 
Polioptila parvirostris Sharpe, Cat. Birds Brit. Mus. Vol. 10, p. 448 (1885) (Chamicuros, Eastern Peru). 
Hab Southern tributaries of the Peruvian Amazons : Ucayali, Huallaga etc. 
24. Polioptila livida maior Hellmayr. 
Polioptila nigriceps matory Hellmayr, Nov. Zool. Vol. 7, p. 538 (1900) (Suecha, Andes of North Peru). 
Hab. Andes of North Peru, at elevations of from 5000 to g000 feet (Suecha, Cajabamba, Araqueda, 
Callacate etc.). 
25. Polioptila schistaceigula [lartert. (Plate, Fig. 3.) 
Polioptila schistacetgula Hartert, Bull. Brit. Ornith. Club, Vol. 7, p. 30 (1898) (Cachabi, N. Ecuador). 
Hab. N. W. Ecuador (Cachabi) and Isthmus of Darien. 
1) Cfr. Hellmayr, Verh. Zool.-bot. Ges. Wien, Vol. 53, 1903, pp. 223, 224. 
2) Ridgway (Birds of North and Middle America, Vol. 3, 1904, p. 714) considers this form to be different from 
P.1. plumbiceps. 1 have shown, however, that the differences do not hold good when series of both are compared (cfr. 
Hellmayr, Novit. Zool. Vol. 14, 1907. pp. 4, 5). 
