BIRDS OF WORTH AKD MIDDLE AMERICA. 23 



dull yellowish white, the auricular region pale brownish, indistinctly 

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

 pale brownish basally, dark brown terminally; legs and feet pale 

 yellowish brown or buffy (in dried skins). 



Yonng, first phimage. — Upper parts rather spotted than streaked, 

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

 parts brownish white or pale brownish buff, broadly streaked on chest, 

 narrowly and rather indistinctly streaked on side, with dusky. 



Admit mfflZe.— Length (skins), 110-115 (111.5); wing, 56-61 (69.2); 

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

 middle toe, 12-14 (13^3) hind claw, 9.5-13.5 (10.7).« 



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

 culmen, 10; tarsus, 19.5; middle toe, 13.6; hind claw, 8.* 



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

 (Santa Fe). 



Anthus rufus (not Alauda nifa Gmelin) Lawrence, Ann. Lye. N. Y., vii, 1862, 

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

 SoLATER, Ibis, 1878, 360, part (crit.). — Salvin and Godman, BioL Oentr.- 

 Am., Aves, i, 1880, 108, part (Panama; Veragua). — Sharpb, Cat. Birds Brit. 

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



[Anthus] rufus Solater and Salvin, Nom. Av. Neotr. , 1873, 8, part. 



Anthus {Notiocorys) parvus Lawkbnob, 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 parvus Bangs, Auk, xviii, Oct., 1901,368 (Divala, Cliiriqui). 



Family HIRUNDINID^. 



THE SWAIIOWS. 



Long- winged, fissirostral, " nine-primaried " acutipfentar Oscines 

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

 aries; the bill 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 lower back. 



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

 with tip of maxilla distinctly but minutely uncinate, maxillary tomiund 

 distinctly notched subterminally, the gape deeply cleft (commissure 

 more than twice as long as exposed culmen) but not extendipg beyond 

 anterior angle of eye. Nostrils variable but usually longitudinally 

 ovate, opening laterally, and overhung by a distinct membraneous 

 operculum; frequently roundish, opening vertically, with little if any 

 membrane along inner edge, rarely bordered above by feathering of 

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



«Six specimens. 6 One specimen, sex doubtful. 



