BIRDS OF NORTH AND MIDDLE AMERICA. 



135 



portion of malar region; under parts very pale buffy yellowish or dull 

 yellowish white, shading laterally into pale greenish olive; under wing- 

 coverts pale straw yellow; maxilla horn brown; mandible with terminal 

 third (more or less) horn brown, much paler basally ; legs and feet dusky 

 (bluish graj'' or grayish blue in life?). 



Adult male.— Length (skins), 146-149 (147.5); wing, 76-78 (77); 

 tail, 66-58 (57); exposed culmen, 16-17 (16.6); depth of bill at nostrils, 

 6.5; tarsus, 22; middle toe, 12.<» 



Admit female (?). — Length (skin), 148; wing, 73; tail, 53; exposed 

 culmen, 16; depth of bill at nostrils, 5; tarsus, 23; middle toe, 12.'' 



British Honduras (Belize); coast of Honduras (Ruatan Island; 

 Bonacca Island).'' 



Vireosylma magwter "Baird, N. S." Lawrence, Ann. Lye. Nat. Hist. N. Y., x, 

 1871, 20 (Belize, Brit. Honduras; coll. TJ. S. Nat. Mus.; ex Baird, MS.). 



V[ireo8yMa] magister Baied, Beewee, and Ridgwav, Hist. N. Am. Birds, i, 1874, 

 3.59. 



Vireo magister Salvin and Godman, Biol. Centr.-Am., Aves, i, sig. 24, Dec, 1881, 

 191 (Belize).— Gadow, Cat. Birds Brit. Mus., viii, 1883, 295.— Ridgwav, 

 Proc. V. S. Nat. Mus., x, 1888, 578 (Ruatan I., Honduras; crit.).— Salvin, 

 Ibis, 1888, 254, part (Ruatan I. ; Bonacca I. ) . 



F[ir«o] magister RiDqwAY, Man. N. Am. Birds, 1887, 470. 



"Two specimens, one from Belize (the type), one from Ruatan Island. 



60ne specimen (sex not determined by collector) from Ruatan Island. 



cTwo specimens from Ruatan differ somewhat from two Belize examples (one of 

 them the type of the species) , but perhaps not sufficiently to characterize them as 

 subspecifically distinct. At any rate it would require a large series from both locali- 

 ties to show whether the differences indicated are constant or not. The difference 

 consists chiefly in a more decided olive or olive-greenish cast to the plumage, but 

 the two Ruatan specimens differ quite appreciably from one another in this respect, 

 one of them having the upper surface nearly uniform dull olive-greenish, instead of 

 having only the rump, upper tail-coverts, and edges of wing-feathers distinctly of 

 this color. This specimen is also much more strongly tinged with yellowish on the 

 under parts, the under tail- and wing-coverts and the axillars being a pale creamy 

 yellow, the whole abdomen a paler tint of the same. The measurements compare 

 as follows: 



