.MfnU HIRUNDO. v;4l'/'<i- 



297 



.1 THtM] 



ncrlwps only elsewhere in Callivhelidon cyanecnnndia. The buwul 

 joint of n»i(J<lIe toe is entirely adhifrent externally, and for more thuu 

 halt internally, and in this respect agrees with leucojdera and allii- 

 lined, while in hivolor and leucorrhoa it is adherent for only three- 

 fourths externally, and about half internally. 



The feet of //. leucorrhoa appear proportionally more robuHt than 

 in other Hpecies, differing in this respect from its miniature, albilineaj 

 which agrees better with the rest. 



The following is a nynopsis of the American speei' -! ; all of which, 

 as stated, are green above, with or without white rini-|)j white 

 beneath : — ■, • . :. 



.a. Tachycineta, 

 Plumage Hoft ftnd velvety, witbont uietallio gloss. Sides of head, ' ' 



space around eyes, and whole under parta white ; with the : r , it 

 fuatUers all plumbenuH at base. Female duller in plumage. .^ , 

 Above greeu, with various shades aud tinges of violet and . . ' 

 purple thalauina. 



i;'(V 



Plumage above compact, and with rich (usually gieen) metallio ; ' 



gloss. Siiles of head to line with eyes like its upper part. 

 Beneath white, sometimes with ashy tinge across breast ; the -, ;, :^ 



feathers of chin and throat, and generally of crissum, white ':•':. . 



to base. A concealed spot in jugulum. •!< 



Entire upper parts uniform In color. ] 



Inside of wings and axillars ash color. No concealed 



basal white on the upper parts . , . hicolor. 



Ramp wbite. No white loral line. 



Back green. Pure white beneath. Peathe" a of back 



and forehead with much concealed white at base. 



Edges of secondaries and greater coverts white albiventria. 



"Back bluish or purple. A grayish band across 



. > breast. No white on wing. Feathers of back 



— — ^ — ? at base'' meytni. 



Bump white. A distinct whit«» loral line. 

 '"'*"■ " ' Rump plain white. Bases of dorsal feathers ashy. 

 No shaft streaks beneath. Length, 5.60; wing, 

 4.50; tail, 4.40 leucorrhoa. 



Rump and under parts with more or less distinct 

 I dusky shaft streaks. Breast and sides with an 



ashy tinge. Length, 4.50 ; wing, 3.75 ; tail, 2.00 aUnlinea. 



Hirundo btcolor. 



Ilduiido hirnlor, ViEiLL. 0,3. Am. Sept. I, 1807, 61, pi. xxxl. — Aud. 

 Oru. Biog. I, pi. 98. — In. B. A. I, pi. 46.— Cassin.— Brewkk, N. Am. 



J.,;. 



