136 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



VIREOSYLVA MAGISTER CINEREA ( Ridgway) . 

 COZUMEL VIREO. 



Similar to V. m. magistei\ but averaging slightly smaller, and with 

 the coloration decidedly more grayish olive above, especially the 

 pileiim, hindneck, back, and scapulars, which are nearer dark smoke 

 gray than olive. 



Adult >//f/7^^.— Length (skins), 140-152 (116.7): wing, 71-76(75.5); 

 tail, 53-59 (57.2); exposed culmen, 15-16 (15.7); depth of bill at nos- 

 trils, 5-6 (5.1:); tarsus, 20-22 (21); middle toe, 11-12 (11.7)." 



Adult female.— IjQiicrih. (skins), 135-115 (140.1); wing, 68-75 (72.1); 

 tail, 50-55 (53.4); exposed culmen, 15-16 (15.5); depth of bill at 

 nostrils, 5-6 (5.3); tarsus, 20-22 (21); middle toe, 11-12 (11.7).'' 



Islands of Cozumel and Mugeres, Yucatan, and adjacent coast of 

 mainland (Puerto Morelos). 



Vireosylvia einerea Ridgway, Descr. New Birds from Cozumel, Feb. 26, 1885, 2; 



Proc. Biol. Soc. Washington, iii, Feb. 26, 1885, 2 (Cozum.el 1., Yncatan; 



coll. U. S. Nat. Mus.). 

 Vireo cmerenx Eidgway, Proc. U. S. Nat. Mus., viii, no. 86, Oct. 17, 1885, 565 



(full descr.). 

 V\ireo] dnereus Ridgway, Man. N. Am. Birds, 1887, 470. 

 Vireo viagister (not of Baird) Salvin, Ibis, 1885, 188 (Cozumel I.); 1888, 254, 



part (Hoi box and Mugeres islands). 



VIREOSYLVA CAYMANENSIS (Cory). 

 GRAND CAYMAN VIREO. 



Most like V. magister einerea. but pileum, hindneck, and back pale 

 drab-gray instead of deep smoke gray, and coloration in general much 

 paler, especially sides of head and under parts. 



Adult male. — Pileum, hindneck, and upper back pale drab-gray or 

 hair brown, becoming gradually more olivaceous on lower back and 



f Six specimens. 

 '' Ten specimens. 

 Specimens from different localities average, respectively, as follows: 



