136 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



VIREOSYLVA MAGISTER CINEREA (Ridgway). 

 GOZnUEL VIREO. 



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

 the coloration decidedly more grayish olive above, especially the 

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

 gray than olive. 



Adult mafe.— Length (skins), 140-152 (146.7); wing, 74-76 (75.5); 

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

 trils, 5-6 (5.4); tarsus, 20-22 (21); middle toe, 11-12 (11.7).« 



Aduli female.— Length (skms), 135-145 (140.4); wing, 68-75 (72.1); 

 tail, 50-55 (58.4); exposed culmen, 15-16 (15.5); depth of bill at 

 nostrils, 6-6 (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 cinerea Ridgway, Descr. New Birds from Cozumel, Feb. 26, 1885, 2; 



Proc. Biol. Soc. Washington, iii, Feb. 26, 1885, 2 (Cozumel I., Yucatan; 



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

 Vire.0 cinereus Ridgway, Proc. U. S. Nat. Mus.-, viii, no. 36, Oct. 17, 1885, 565 



(full descr. ). 

 V[ireo'] dnereux Ridgway, Man. N. Am. Birds, 1887, 470. 

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



part (Holbox and Mugeres islands). 



VIREOSYLVA CAYMANENSIS (Cory). 

 eRAND CAYHAN VIREO, 



Most like V. magister cinerea, 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 



« Six specimens. 

 6 Ten specimens. 

 Specimens from different localities average, respectively, as follows: 



