72 Proceedings of the Biological Society of Washington. 



Volatinta jacarini atronitens, subsp. nov. 



Similar to Volatinta jacarini jacarini (Linnaeus), of Brazil, Bolivia, etc., 

 but under wing-coverts and axillars mostly or entirely black. 



A series of Volatinia from French Guiara, whence Fringilla splendens 

 Vieillot was described, while not entirely typical of true jacarini, are clearly 

 referable to that form, necessitating a new name for the northern race, 

 which has heretofore passed as splendens. 



Type, No. 166,744, Collection United States National Museum, adult 

 male; Campeche, Campeche, Mexico, June 9, 1900; E. W. Nelson and 

 E. A. Goldman. 



Polioptila guianensis, sp. nov. 



Adult male: above blackish plumbeous, the pileum very slightly deeper in 

 tone; wings and their coverts dull black, with blackish plumbeous 

 external margins, narrower on the primaries ; three middle pairs of rectrices 

 black; three outer pairs white, with sometimes a narrow black inner 

 margin on the innermost; chin and upper throat whitish; lower throat 

 and breast uniform gray (between dark gull gray and slate gray), passing 

 into pure white on the abdomen and under tail-coverts; upper and under 

 eyelids white; under wing-coverts and inner margins of remiges toward 

 the base white; bill and feet black (in skin). Wing (type), 50; tail, 45; 

 exposed culmen, 9; tarsus, 15. 



Adult female similar, but colors lighter and duller, especially below; 

 supraloral streak white. 



Type, No. 62,036, Collection Carnegie Museum, adult male; Tamanoir, 

 French Guiana, June 9, 1917; Samuel M. Klages. 



Sublegatus glaber obscurior, subsp. nov. 



Similar to Sublegatus glaber glaber Sclater and Salvin, but darker and 

 duller in general coloration, the upper parts nearer dark olive gray than 

 grayish olive; the throat and breast deeper gray; and the posterior under 

 parts paler, duller yellow. Bill as large as in true glaber. 



Type, No. 56,689, Collection Carnegie Museum, adult male; Cayenne, 

 French Guiana, March 7, 1917; Samuel M. Klages. 



Sayornis latirostris fumigatus, subsp. nov. 



Similar to Sayornis latirostris latirostris (Cabanis and Heine), but general 

 coloration obviously darker and blacker. 



Type, No. 44,508, Collection Carnegie Museum, adult female; Don 

 Diego, Santa Marta, Colombia, January 20, 1914; M. A. Carriker, Jr. 



Sirystes albocinereus subcanescens, subsp. nov. 



Similar to Sirystes albocinereus albocinereus Sclater and Salvin, but bill 

 larger (20 mm.), and throat and breast much grayer, the flammulations 

 more distinct and more extended posteriorly. 



Type, No. 68 697, Collection Carnegie Museum, adult female; Upper 

 Rocana, northern Para, Brazil; June 27, 1918; Samuel M. Klages. 



