722 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Napa Co., California). — Chamberlin, Condor, iii, 1901, 33-36, figs. 1-3 

 (Vallecito, California; nesting habits; descr. nest and eggs, illustrated). — 

 Mailliard, Condor, iii, 1901, 127 (Paicines, San Benito Co., California, 

 resid.).— Oberiiolser, Auk, xix, 1902, 301 (w. of Pecos R., w. Texas).— 

 Brewster, Bull. Mus. Comp. Zool., xli, 1902, 209 (Cape district. Lower 

 California, resid. from coast to top of highest mountains; crit. ; descr. nest 

 and eggs). 

 P\plioptila\ c\_serulea'] ohscura Bailey (Florence M.), Handh. Birds, W. U. S., 

 1902, 466. 



POLIOPTILA C^RULEA MEXICANA (Bonaparte). 

 MEXICAN GNATCATCHER. 



Similar in coloration to P. c. cserulea but decidedly smaller. 



Adult v/m/6^— Length (skins), 100-107 (103.3); wing, 15-50 (17.5); 

 tail, 15-18 (16.3); exposed culmen, 9.5-11 (10.3); tarsus, 15-17 (16.3); 

 middle toe, 8-9.5 (8.6).« 



Adult female.— lu^ngih (skins), 101-103 (102); wing, 42.5-18 (15.3); 

 tail, 11-45.5 (43.5); exposed culmen, 9.5-10.5 (10); tarsus, 16-17 (16.5); 

 middle toe, 8-9 (8.5).* 



Southeastern Mexico, in States of San Luis Potosi (Valles), Vera 

 Cruz (Minatitlan; Tlalcotalpan), Oaxaca (near Tehuantepec; Santa 

 Efigenia; Oaxaca), Chiapas (Huehuetan; Palenque), Tabasco (Monte- 

 cristo), Campeche (Campeche), and Yucatan; Guatemala (in winter 

 only?). 



(?) CiuUcii-ora] coerulea Cabanis, Mus. Hein., i, 1850, 34, part (Jalapa, Vera 

 Cruz). 



(?) Polioptila caerulea Sclater, Proc. Zool. Soc. Lond., 1859, 363 (Jalapa, Vera 

 Cruz). 



Polioptila caerulea Baird, Rep. Pacific R. R. Surv., ix, 1858, 380, part. 



Polioptila cicrulea Baird, Review Am. Birds, 1864, 74, part.— Lawrence, Ann. 

 Lye. N. Y., ix, 1870, 199 (n. Yucatan); Bull. U. S. Nat. Mus., no. 4, 1876, 

 12 (Santa Efigenia, Juchitan, Tehuantepec, and Oaxaca). — Baird, Brewer, 

 and Ridgway, Hist. N. Am. Birds, i, 1874, 78, part.— Salvin and Godman, 

 Biol. Centr.-Am., Aves, i, 1880, 50 part.— Salvin, Cat. Strickland Coll., 

 1882, 61 (Mexico; Guatemala).— Sharpe, Cat. Birds Brit. Mus., x, 1885, 442, 

 part. — American Ornithologists' Union, Check List, 1886, no. 751, part. — 

 ChapiMan, Bull. Am. Mus. N. H., viii, 1896, 276 (Chichen-Itza, Yucatan). 



P\_olioptila'] cserulea Ridgway, Man. N. Am. Birds, 1887, 569. 



[Polioptila] caerulea Sclater and Salvin, Nom. Av. Neotr., 1873, 4, part. 



Culicivora rnexicana Bonaparte, Consp. Av., i, 1850, 316. 



[Culicivora'] rnexicana Heine and Reichenow, Nom. Mus. Hein. Orn., 1882, 24. 



Polioptila rnexicana Sclater, Proc. Zool. Soc. Lond., 1859, 363 (Jalapa, Vera 

 Cruz), 373 (Oaxaca); (?) Cat. Am. Birds, 1862, 12 (Orizaba, Vera Cruz).— 

 (?) Sclater and Salvin, Ibis, 1859, 9 (Duenas and Volcan de Fuego, 14,000 

 ft., Guatemala).— Salvin, Ibis, 1866, 202. 



[Polioptila'] rnexicana Gray, Hand-list, i, 1869, 237, no. 3439. 



Polioptila ccerulea rnexicana Nelson, Auk, xv, Apr., 1898, 160 (lowlands of Vera 

 Cruz, s. to e. Chiapas; crit.; descr.). 



P[olioptila'] caerulea rnexicana Hellmayr, Novit. Zool., vii, 1900, 535 (s. Mexico; 

 Yucatan?); Tierreich, 18 Lief., 1903, 21. 



{?) Polioptila Sclater, Proc. Zool. Soc. Lond., 1856, 298 (Cordova, Vera 



Cruz). 



« Twelve specimens. ^ Five specimens. 



