THAYER, BANGS: AVES FROM SAVANNA OF PANAMA. 223 



79. Volatinia jacarini splendens (Vieill.). 

 One adult ^, May. 



80. Tiaris olivacea dissita, siibsp. nov. 



Nine adults, both sexes, May 2 to 14. 



Type.—QoW. E. A. and O. Bangs, No. 14,212, adult ^, Savanna of Pan- 

 ama, May 12, 1904. 



Characters. — Similar in color to T. olivacea mtermedia Ridgw. from Cozumel 

 Island, but much smaller. Differing from T. olivacea jnisilla (Swains.) from 

 Mexico, in that the adult male never has the crown and auricular region black 

 Adult 9 rather greener, less grayish than the adult 9 of T. olivacea pusilla. 



Color. — Adult (^, supraloral spot, eye-brow, chin, upper throat, and spot 

 on lower eye-lid bright yellow; lower throat, breast, lores, malar region, and 

 anterior portion of forehead, and a narrow line along sides of crown, black; top 

 of head and rest of plumage dull grayish olive, paler, more whitish on middle 

 of belly. Adult 9 > plain grayish olive, the black and yellow markings of the 

 male usually slightly indicated, paler, more whitish, on the middle of the , 

 belly. 



No. Locality. Sex Wing. Tail. Tarsus. Culmen. 



14.212 Savanna of Panama ^ ad. 49.5 37.5 16.2 8.8 



14.213 do. ^ ad. 49. 38. 16.4 9.2 



14.214 do. ^ ad. 49.5 34. 16.4 9.2 



14.215 do. $ ad. 48.5 39.5 15.8 9.2 



40.786 M. C. Z. do. ^ ad. 50. 40. 16.8 9.4 

 40,785 M. C. Z. do. $ ad. 49.5 39. 16.8 9.4 



40.787 M. C. Z. do. ^ ad. 49. 39. 17. 9.4 



40.788 M. C. Z. do. 9 ad. 48. 38. 16. 9.2 



14.216 do. 9 ad. 48. 35. 15.8 9.2 

 7,590 Loma del Leon, Panama. ^ ad. 48. 40. 16.4 9.4 



9.313 Boquete, Chiriqui. ^ ad. 50. 40. 16.8 9. 



9.314 do. (? ad. 49. 38. 16.2 9.2 



9.315 do. $ ad. 49. 40. 16.4 9.4 



Remarks. — There appears to be a wide gap in Central America between the 

 ranges of the present form and T. olivacea pusilla, where no grassquit occurs. 

 The new form extends from the Bogota region north to Costa Rica ; T. olivacea 

 pusilla from eastern Mexico south to Guatemala, leaving most of Guatemala 

 and Nicaragua, Honduras and Salvador, between the ranges of the two, appar- 

 ently unoccupied by a member of the genus. 



T. olivacea dissita can at once be separated from true T. olivacea olivacea of 

 the Greater Antilles by the black of the under parts extending over the breast, 

 otherwise it is much like it : from T. olivacea intermedia of Cozumel Island, 



