(18S3) ; B. O. IT. List Brit. B. p. 45 (18S3) ; Skarpe, Cat. B. in Brit. Mus. x. 



■ p. 173 (1885) ; Salvin, Ibis, 18S5, p. 205 ; id. Ibis, 1888, p. 255. 



Progne subis, Baird, Review Anier. B. p. 274 (18G4) ; Sunricbr. Mem. Bost. Soc. 

 N. H. i. p. 547 (1869) ; Lawr. op. cit. ii. p. 271 (1874) ; Baird, Brewer, & Eidgw. Hist. 

 N.-Amer. B. i. p. 329, pi. 16. figs. 7-10 (1874) ; Hensb. Eep. Expl. 100th Mer. 

 p. 213 (1875) ; Bidgw. IT. S. Geol. Surv. 40th Par. pt. iii. Oru. p. 439 (1877) ; Merrill, 

 Proc. IT. S. Nat. Mus. i. p. 125 (1878) ; Coues, B. Color. Vail. p. 445 (1878) ; id. 

 Bull. IT. S. Geol. Surv. iv. p. 572 (1S78) ; Cooper, Proc. IT. S. Nat. Mus. ii. p. 247 

 (1880, pt.) ; Eidgw. op. cit. iii. p. 175 (1880) ; Steams, New Engl. Bird-Life, i. p. 189 

 (1881) ; Hoffman, Bull. U. S. Geol. Surv. vi. p. 222 (1881) ; Coues, Key N. Amer. B. 

 2nd ed. p. 325 (1S84) ; Drew, Auk, ii. p. 15 (1885) ; Merriam, t. c. p. 57 ; Agers- 

 borg, t. c. p. 279 ; Cory, Auk, iii. p. 56 (1886) ; Brewster, t. c. p. Ill ; Anthony, 

 t. c. p. 169; Everm. t. c. p. 183; Eox, t. c. p. 317; Seton, t. c. p. 324; A. O. IT. 

 Check-1. p. 292 (1886) ; Towns. Proc. IT. S. Nat. Mus. x. pp. 221, 236 (1887) ; 

 Eidgw. Man. N. Amer. B. p. 459 (1887) ; Beckh. Proc. IT. S. Nat. Mus. x. pp. 638, 

 640 (1887); Langdon, Auk, iv. p. 131 (1887); Lloyd, t. c. p. 294; Beckh. t. c. 

 p. 302 ; Eichm. Auk, v. p. 23 (1888) ; Scott, t, c. p. 31 ; Paxon & Allen, t. c. 

 pp. 150, 152 ; Chapm. t. c. p. 275 ; Brewst. t. c. p. 389 ; Cory, B. W. Ind. p. 70 

 (1889) ; Everm. Auk, vi. p. 25 (1889) ; Eives, t. c. p. 53 ; F. H. Allen, t. c. 

 pp. 77, 78 ; Pindar, t. c. p. 315 ; Kimball, t. c. p. 339 ; Loomis, Auk, vii. p. 125 

 (1890) ; Meams, t, c. p. 261 ; Thompson, Proc. IT. S. Nat. Mus. xiii. p. 608 

 (1890) ; Brewst. & Chapm. Auk, viii. p. 13S (1891) ; Dwight, Auk, ix. p. 138 

 (1892) ; Coombs, t. c. p. 205 ; Scott, t. c. p. 213 ; Eidgw. t. c. p. 307 ; Attwater, 

 t. c. p. 340 ; Lawr. t. c. p. 356 ; Hatch, B. Minnesota, p. 350 (1892) ; Bboads, 

 Auk, x. p. 17 (1893); White, t. c. p. 226. 



Progne elegans, ad., Baird, Eeview Amer. B. p. 275, note (186 1). 



Progne cryptoleuca, Baird, t. c. p. 277 (1861) ; Gray, Hand-1. B. i. p. 75, no. 894 

 (1869) ; Eidgw. Man. N. Amer. B. p. 459 (1887) ; Scott, Auk, ix. p. 213 (1892). 



Progne subis, var. cryptoleuca, Baird, Brewer, & Eidgw. Hist. N.-Amer. B. i. p. 332 

 (1874). 



Progne subis cryptoleuca, Eidgw. Proc. IT. S. Nat. Mus. iii. p. 175 (1880), iv. p. 210 

 (1881); Scott, Auk, vi. p. 325 (1889). 



Cecropis violacea, Boie, Isis, 1828, p. 316; Less. Compl. Buff. viii. p. 498 (1837). 



Cecropis subis, Less. Compl. Buff. viii. p. 498 (1837). 



P. purpurasccnti-nigra ; fasciis albis celatis binis, una ad latera dorsi, altera ad latera hypochondri- 

 arurn positis. 



Hub. in America septentrionali aestivans, in America meridionali hibernans. 



Adult male. General colour above glossy dark purplish blue, with a concealed spot of silky white on the 

 sides of the lower back ; lesser and median wing-coverts like the back but rather duller ; greater 



