328 XOIITIT AMKKICAX r.TRDS. 



dia^'iiosis will .show the ivliitiuiishiii of the sevuiul t'uniis usiuiUy ivcuguized 

 as distinct species : — 



Species and Varieties. 



P. Bubis. A1»«)vi: lustrous Muc-black ; iR-uealli lustrous blue-blaok or lirowu- 

 isli-jrniy, uiiilbrui, or with tho alxlonu'ii and crissum whu > or whitish. Ft'iuulcs 

 always with the throat and juiruluni <rray, 

 A. Adult mail's entirely steel-blue. 



a. Females and younj,' males with the abdomen pure wliite. 



Feathers uhoul the u)ins smoki/-ijr(ii/ hi'iinifh fhc siw/ace. 



Win^' about O.tMJ; fork of tail, .80 deep, 9 •'^""^ '^'"'- Abdominal an<l 

 crissal teatheis always with dusky shafts, and with the eonrealed por- 

 tion p-ayish. Forehead and nape hoary <i:rayish. ILih, Continental 

 >«\)rth America, south into Northern ^lexieo .... \n\\sHhis. 



^^ in^, 'i.lio ; fork of tail considerul)ly less. 9 "'"^ Jnv. unknown. 

 Hah. Galapa<,^)S ........ var. con color} 



Wing, 5.80; fork of tail, l.lO deep. 9 -'''d Juv. unknown. Ilab. 

 Chili ........... var. fn rcata} 



Feathers ahont the anus snowy-white beneath the s'lrface. 



Wing. 5.50 ; fork of tail. .00 deep. 9 '^"d JHi\ Abdominal and cris- 

 sal feathers entirely snowy-white, — never with dusky shafts (exceitt 

 ^ JHi: in transition). Forehead dusky grayish-brown; nape steel- 

 blue. Hah. Cub^ and Florida Keys .... var. cryptoleuca. 



b. Females and y<iung with the abdomen dusky grayish-brown. 



Wing, 5.50; fork of tail, .80. 9- Lower parts dusky grayish-brown, 

 the feathers bordered with lighter grayish, producing a squamate ap- 

 pearance. Jur. similar, but feathers of the upper parts bordered with 

 whitish. Hah. Paraguay (Vermejo River) . . \uv. e let/a n s 



. s 



B« Adult males with the abdomen and crissum pinv wliite. 



a. Lower tail-coverts with the shafts pure white. ^ (adullj with the 

 throat, jugulum, and sides steel-blue. 



9 and juv. scarcely distinguishable from those of cryptoleuca. Hab. 

 Porto Rico and Jamaica (St. Domingo alv* '') . . var. do m in icensis.* 



b. Lower tail-covcrts with their shafts dusky, q (adult) with throat, jugu- 

 lum, and sides brownish-gray. 



Sides of the jugulum with a blr >-black patch in the ^. Wing. 5.50; 

 fork of tail, .70 deep. Hah. Bolivia .... var. domestica.^ 



^ Protjnc S7ibis, var. cnncolor. Ilirundo concojor, Oofld, P. Z. S. 1837, 22 (.Tames 1., T.ala- 

 pagos). Progne c. Baird, Kev. Am. B. 1865, 278. Progne modcsta, Goi'Li*, Birds Beagle, 30, 

 pi. V. (Same spocmn-n.'l 



2 Progne suhis, var. furcidd. Progiw ftircafa, Baiud, Rev. Am. B. 1865, 278. (Chile.) 



* Progne suhis, var. thgans. Prague degans. Bah:!), Rev. Am. B. 1865, 275. (Vermejo 

 River. .? Progne pnrjmrea, DAiiWix, B. Beagle i}S (Montevideo, November), Baliia Blaiiea, 

 Buenos Ayr«s, September.) 



* Progne (subis vurl) dominicrnsis. Hirnndo dom inicensis, Gm. S. N. I, 1788, 1025. Progne 

 d. March, P. A. N. S. 1863, 295 ; Baird, Rev. Am. B. 1865, 279. 



* Progne (suhis var 1) domcstica. Progne domes! ica (ViEiLL.) Baird, Rev. Am. B. 1865, 282. 

 (Paraguay and Bolivia.) {^Ilirundo domestica, Vieill. Nouv. Diet, xiv, 1817, 521.) 



