iniiDS OK NORTH AND MIDDLE AMKKK'A. 28 



(lull \ ellowisli wliito, the auricular region pale brownish, indistinctly 

 streaked with paler; maxilla dark brown or brownish black; mandible 

 pale brownish basally, dark brown terminally; leg-s and feet ])ale 

 yellowish brown or butty (in dried skins). 



Young , firnt 2)fnm.age. — Upper parts rather spotted than sti'caked, 

 the feathers being narrowly margined at tips with pale brown; under 

 parts brownish white or pale brownish ])utt', broadly streaked on chest, 

 narrowly and rather indistinctly streaked on side, with dusky. 



MiiU 7/w/A/.— Length (skins), 110-115 (111.5); wing, 56-61 (59.2); 

 tail, 41-44 (43.2); exposed culmen, 10-11 (10.5); tarsus, 18-20 (19.2); 

 middle toe, 12-14 (13.3) hind claw, 9..5-13.5 (10.7).« 



Adult female. — Length (skin), 110; wing, 60; tail, 42; exposed 

 culmen, 10; tarsus, 19.5; middle toe, 13.5; hind claw, 8.'' 

 . Isthmus of Panama (Panama City), Chiriqui (Divala), and Veragua 

 (Santa Fe). 



Avthus rufus (not Alnuda rufa Gmelin) Lawrence, Ann. Lye. N. Y., vii, 1862, 

 .322 (Panama R. R.) .— Baird, Review Am. Birds, 1864, 156 (Panama R. R. ).— 

 ScLATER, Ibis, 1878, 360, part (crit.). — Salvin and Godman, Biol. Centr.- 

 Am., Ave.>J, i, 1880, 108, part (Panama; Veragua). — Shaki^e, Cat. Birds Brit. 

 Mus., X, 1885, 606, part (Panama; Santa Fe, Veragua). 



\_Anthu»\ rufux Sclater and Salvin, Nom. Av. Neotr., 1878,8, part. 



AnfJius {Notiocoryu) parvus Lawrence, Proc. Acad. Nat. Sci. Phila., xvii, June, 

 1865, 106, 107 (Panama City, Isthmus of Panama; coll. G. N. Lawrence). 



Anthus parvus Salvin, Proc. Zool. Soc. Lond., 1867,135 (Santa Fe, Veragua; 

 crit). 



Anthus rufus parinis BxycxS, Auk, xviii, Oct., 1901, 368 '(Divala, Chiriqui). 



Family HIRUNDINID^E. 



THE SWALLOWS. 



Long-winged. ti.ssirostral. " nine-primaried ■"' aeutiplantar Oscines 

 with the longest primaries more than twice as long as longest second- 

 aries; the })ill triangular in vertical profile, with exposed culmen not 

 longer (usually shorter) than distance from nostril to eye; the feet 

 small and weak (tarsus not longer than middle toe with claw, usually 

 shorter), and with the dorsal pteryla forked on the lowtM' back. 



Bill small, triangular in vertical profile, depressed, "lissirostral," 

 with tip of maxilla distinctly but minutelj'^ uncinate, maxilhnv toniium 

 distinctly notched subterminally, the gape deeply ch^ft (connuissure 

 more than twice as long us exposed culmen) but not iwtending beyond 

 anterior angle of eye. Nostrils variable but usually longitudinally 

 ovate. o])ening laterally, and overhung by a distinct nuMubraneous 

 operculum; frecpiently roundish, opening vertically, witii little if any 

 membrane along inner edge, rarely bordered above by feathering of 

 the frontal antia?. Rictal bristles few, short, and inconspicuous, fre- 



"Six sjH'cimens. ''One sjiefimen, .>j«'x doubtful. 



