NEW BIRDS FKOM (JOZUMEL ISLAND. 23 



10. Attila cozumelae, sp. nov. 



SPECIFIC CHARACTERS. Most like A. citreopygia (Bonap.), but 

 lower parts grayish white, the throat and jugulum very indistinctly 

 streaked with darker. Type, No. 102,767, U. S. Nat. Mus.; Cozu- 

 mel, Jan. 29. 



11. Lampornis thalassinus, sp. nov. 



SPECIFIC CHARACTERS. Most like L. prevosti (Less.), but upper 

 parts less bronzy or more of a grass-green, the black on the throat 

 much more extended, and the breast greenish-blue. Type, No. 

 102,796, $ , U. S. Nat. Mus.; Cozumel, Jan. 24. 



12. Chlorostilbon forficatus, sp. nov. 



SPECIFIC CHARACTERS. Most like C. caniveti (Less.), but tail 

 much longer (1.90 inches, forked for 1.15). Type, No. 102,812, 



$ , U. S. Nat. Mus.; Cozumel, Jan. 23. 



13. Empidonax gracilis, sp. nov. 



SPECIFIC CHARACTERS. Above ash-gray, more brownish, but 

 still decidedly gray, on lower back, rump, and upper tail-coverts ; 

 a distinct orbital ring, two broad wing-bands, and broad edges to 

 tertials, grayish-white ; sides of head, light ash-gray, fading to 

 grayish-white on throat ; jugulum and sides of breast, light brownish- 

 gray; rest of lower parts, white. Wing, 2.50; tail, 2.20; oilmen, 

 .55 ; bill, from nostril, .25 ; width of bill at base, .23 ; tarsus, .60 ; 

 middle toe, .30. Type, No. 102,737, 9 (?), U. S. Nat. Mus; Coz 

 umel, Jan. 22. 



14. Myiarchus platyrhynchus, sp. nov. 



SPECIFIC CHARACTERS. Above dull brown, without olive tinge, 

 darker on pileum ; upper tail-coverts and edges of rectrices, rem- 

 iges, and greater wing-coverts, rusty. Chin, throat, and jugulum, 

 pale ash-gray ; rest of lower parts, very pale sulphur yellow. Wing, 

 3.00 ; tail, 2.00 ; culmen, .85 ; bill, from nostril, .50 ; width at 

 base, .33; tarsus, .80; middle toe, .42. Type, No. 102,738, 9 (?), 

 U. S. Nat. Mus.; Cozumel, Jan. 22. 



