BIRDS OF NORTH AND MIDDLE AMERICA. ' 631 



Ad7iJffemaIe.--Jjength, (skins), 172-192(180) ; wing, 91.5-100 (94.3) ; 

 tail, S0-S7.5 (82.3); exposed culmen, 19-21 (20.3); tarsus, 21-23.5 

 (22.2); middle toe, 12-14 (13.1).« 



State of Chia])as (Tonala), southern Mexico; Nicaragua (Onietepe; 

 San Juan del Sur) ; western Costa Rica (Miravalles; San Lucas; 

 Mojica Pacifica; Baliia de Salinas). 



I am very doubtful whether this supposed form is really distinct 

 from M. n. nuttingi. The only difference is in dimensions, and it is dif- 

 ficult in the case of some specimens to decide which form they should 

 l)e referred to; and, what is especially significant, the range of each is 

 practically the same. 



Myiarchus nuttingi (not of Ridgway) Nutting, Proc. U. S. Nat. Miis., vi, 188.3, 

 374 (San Juan del Sur, Nicaragua), 393 (Omelepc, Nicaragua). — Salvix and 

 GoDMAN, Biol. Centr.-Am., Aves, ii, 1889, 92, part (San Juan del Sur and 

 Ometepe, Nicaragua). 



M\yiarchus] brachyurus Ridgway, Man. N. Am. Birds, 1887, 334 (Ometepe, Nica- 

 ragua; coll. IT. S. Nat. Mus.).— Allen, Bull. Am. Mus. N. H., iv, 1892, 346, 

 in text (crit.). 



Myiarchus brachyurus Ridgway, Man. N. Am. Birds, 1887, 592; 2d ed., 189G, 613. — 

 Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1889, 92, footnote. — Nelson, 

 Proc. Biol. Soc. Wash., xvii, 1904, 40 (monogr.). 



[Myiarchus] brachyurus Suarpe, Hand-list, iii, 1901, 143. 



MYIARCHUS NUTTINGI INQUIETUS (Salvin and Godman). 

 GUEERERO FLYCATCHER. 



Similar to M. n. nuttingi, but inner webs of rec trices with a stripe, 

 more or less broad, next to shaft, of dusky grayish brown. 



Adult male.— Length (skins), 175-197 (184); wing, 88-96.5 (91.2); 

 tail, 83-92 (90.8); exposed culmen, 17-19 (18); tarsus, 21-23 (21.7); 

 middle toe, 12-13 (12.4)).^ 



Adult female. —Length (skins), 174-188 (182) ; wing, 84.5-89.5 (87.1) ; 

 tail, 78-83.5 (81.9); exposed culmen, 15.5-18.5 (17.3); tarsus, 20.5- 

 22.5 (21.3); middle toe, 11.5-13 (12.2).'^ 



Western, central, and southern Mexico, in States of Sonora (Ala- 

 mos; Oputa; Bacadehuachy), Chihuahua (Batopilas), Sinaloa (Culi- 

 acan) , Jalisco (LaBarca; Zapotlan), Durango (Chacala), Guanajuato, 

 Zacatecas (San Juan Capistrano), Michoacan (I^a Salada; Zamora), 

 Morelos (Ycapixtla), Puebla (Tehuacan), Guerrero (Chilpancingo; 

 Tierra. Colorado; Rio Papagaio; Acapulco; Rio Balsas; El Rincon; 

 El Naranjo; La Lagunilla; Papa3^o; Tlalixquatilla; Acahuitzotla; 

 Dos AiToyos), Oaxaca (Chihuitan; Santa Efigenia; Huilotepec; Te- 

 huantepec), and Chiapas (Gineta Mountains), and Territory of Tepic 

 (Acaponeta.) 



« Seven specimens. & Ten specimens. c Nine specimens. 



