192 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



V\ireo] crassirostris flavescens Eidgway, Man. N. Am. Birds, Sept., 1887, 476 



(Concepcion I., Bahamas; coll. U. S. Nat. Mus.; also Cat I., Green Cay, 



Eum Cay, and Galding Key, Andros I.). 

 Vireo crassirostris flavescens Ridgway, Man. N. Am. Birds, 1887, 592; 2d ed. 1896, 



614; Auk, viii, Oct., 1891, 336 (Cat I.), 338 (Eum Cay), 339 (Green Cay; 



Concepcion I.).— Coey, Auk, v, 1888, 157. 

 Vireo alleni (not of Cory, 1886) Coky, Cat. W. I. Birds, 1892, 17, part. 

 Vireo crassirostris alleni Coey, Cat. W. I. Birds, 1892, 116, 153, part (Berry I., Bimi- 



nis, Eleuthera, Eum Cay, Concepcion, Maragauna, and Inagua, Bahamas). 



VIREO CRASSIROSTRIS ALLENI Cory. 

 ALLEN'S VIREO. 



Similar in coloration to V. c. flavescens^ but upper parts browner, 

 white wing-bands apparently broader, and outermost primary smaller.'' 



AdniU mafe.— Length (skins), 115-124 (119.5); wing, 61-63 (62); 

 tail, 48.5-52 (50.2); exposed culmen, 12-12.5 (12.2); tarsus, 21-22 

 (21.3); middle toe, 11.5-12 (ll.T).» 



Adult female. — Length (skin), 120; wing, 58; tail, 47; exposed cul- 

 men, 12; tarsus, 21; middle toe, 11. 



Islands of Grand Cayman and Cayman Brae (south of Cuba), Greater 

 Antilles. 



Vireo alleni Coey, Auk, iii, Oct., 1886, 500, 501 (Grand Cayman, Greater Antilles; 



coll. C. B. Cory); v, 1888, 157; vi, 1889, 31 (Cayman Brae); Birds W. I., 



1889, 75; Cat. W. I. Birds, 1892, 17, part. 

 Vireo crassirostris alleni Cory, Cat. W. I. Birds, 1892, 116, 153, part (Grand 



Cayman ) . 



VIREO CRASSIROSTRIS APPROXIMANS Ridgway. 

 OLD PROVIDENCE VIREO. 



Similar in coloration to V. c. flavescens, but tarsus longer, tail more 

 rounded, and coloration paler throughout, the bill light brown instead 

 of dusk}'. 



Adult male. — Length (skin), 125; wing, 61; tail, 52; the lateral 

 rectrices 7 mm. shorter; exposed culmen, 11; tarsus, 23; middle toe, 



Island of Old Providence, Caribbean Sea. 



Vireo approximans Eidgway, Proc, U. S. Nat. Mus., vii, July 29, 1884, 179 (Old 

 Providence I., Caribbean Sea; coll. U. S. Nat. Mus.). — Cory, Auk, iv, 

 1887, 180 (Old Providence). 



aXhe only specimens of this form which I have been able to examine are three 

 males and one female from the island of Cayman Brae. These are in much worn 

 and badly discolored plumage, so that a satisfactory comparison with V. c. flavescens 

 can not be made. It is possible the two supposed forms may prove inseparable, in 

 which case V. c. flavescens would become a synonym of V. c. cUleni. 



SThree specimens from Cayman Brae. 



"Measurements of the type specimen. 



