2 



(1883) ; Salvin & Godman, Biol. Ceutr.-Amer., Aves, i. p. 235 (1883) ; Sharpe, 

 Cat. Birds in Brit. Mus. x. pp. 117, 631 (1885) ; Hensli. Eep. Zool. Expl. lOOtli 

 Mer. p. 217 (1875) ; Drew, Auk, ii. p. 15 (1885) ; Turner, Proc. U.S. Nat. Mus. 

 viii. p. 239 (1885) ; Agersb. t. c. p. 278 ; Turner, Contr. N. H. Alaska, no. ii. 

 p. 177 (1886) ; Anthony, Auk, iii. p. 170 (188G) ; Everm. t. c. p. 183 ; Eox, 

 t. c. p. 317; Thompson (Seton), t. c. p. 325; Dwight, Auk, iv. p. 16(1887); 

 Beckham, t. c. p. 304; Eidgw. Man. N. Amer. B. p. 461 (1887); Nelson & 

 Hensh. Rep. N. H. Coll. Alaska, no. iii. p. 198 (1887) ; Warren, B. Pennsylvania, 

 p. 206, pi. 38 (1888) ; Scott, Auk, v. p. 31 (1888) ; Faxon & Allen, t. c- pp. 150, 

 152 ; Chapm. t. c. v. p. 275 ; Merrill, t. c. p. 360 ; Brewster, t. c. p. 389 ; Everm. 

 Auk, vi. p. 26 (1889) ; Eaxon, t. c. p. 102 ; Brittain & Cox, t. c. p. 118 ; Dutcher, 

 t. c. p. 130 ; Cory, B. W. Ind. p. 71 (1889) ; Cooke, Eep. Migr. Miss. Valley, 

 p. 229 (1888). 



Petrochelidun Mcolor, Cass. Cat. Hirund. Mus. Philad. Acad. p. 4 (1853) ; Scl. 

 P. Z. S. 1857, p. 201, 1859, p. 364 ; id. & Salv. Ibis, 1859, p. 13 ; Brewer, Proc. 

 Bost. Soc. vii. p. 306 (1860) ; Scl. Cat. Amer. B. p. 40 (1862). 



Iridoprocne hicolor, Coues, B. Color. Yall. p. 412 (1876) ; Drew, Bull. Nutt. Orn. 

 Club, vi. pp. 88, 115 (1881) ; Coues, ed. Stearns's N. Engl. Bird-life, i. p. 183 

 (1881) ; Merriam, Bull. Nutt. Orn. Club, vii. p. 235 (1882) ; Coues, Check-list, 

 p. 42 (1882) ; id. Key N. Amer. B p. 322 (1884). 



Sirundo hicolor, var. vesperUna, Cooper, Amer. Nat. x. p. 91 (1876) ; id. Proc. U. S. 

 Nat. Mus. ii. p. 246 (1880) ; Eidgw. Proc. U. S. Nat. Mus. iii. p. 234 (1880). 



T. uropygio dorso concolore : supra nitenti-viridis, siipracaudalibus dorso concoloribus : subtus albus. 



Hab. iu regione Nearctica fere tota, et iu sub-rcgione Centrali-Americaua hieraante. 



Adult male. General colour above glossy steel-blue, greener on the head, the scapulars like the back; 

 lesser and median Tving-coverts steel-blue ; greater coverts, bastard-wing, primary- coverts, and 

 quills blackish, the former edged and the latter glossed externally with steel-blue, duller on the 

 primary-coverts and quills ; tail-feathers blackish with a steel-blue gloss ; lores and feathers 

 below the eye velvety black ; upper edge of the ear-coverts and sides of the neck steel-green like 

 the head ; cheeks, remainder of ear-coverts, and entire under surface of body white, with a patch 

 of brown glossed with steel- green on the sides of the upper breast ; axillaries and under wing- 

 coverts smoky brown, those near the edge of the wing dull whitish ; quills below dusky brown : 

 "bill black; interior of mouth pale yellow; feet dark purplish brown" [R. Ridgwaij). Total 

 length 5 "3 inches, culmen 0'35, wing 4"50j tail 2-25, tarsus 0'45. 



Adult female. Similar to the male : "bill black; interior of mouth fleshy white; tarsi and toes dark 

 sepia, the latter pinkish beneath " [R. Ridgway) . Total length 5 inches, culmen O'S, wing 4-6, 

 tail 2"1, tarsus 0'45. 



In the British Museum ' Catalogue of Birds ' we suggested that the winter plumage was greener than 

 the breeding-plumage, and having now examined the fine series in the Henshaw coUectioo, we 

 believe that this is absolutely correct. Thus when the breeding-season approaches there is 



