92 bulletin: museum of comparative zoology. 



Remarks. — Venezuelan birds are intermediate in coloration be- 

 tween S. 0. olivascens and S. o. phimbeu.s. Some specimens from 

 the Lower Orinoco delta have a broad superciliary stripe extending 

 nearly to the culmen, but in none seen by us is it so much developed 

 as in the Trinidad specimens. 



298. Myospiza humeralis humeralis (Bosc). 



Type-locaUty. — Cayenne. 



One adult cf , Vicinity of Paramaribo, March. 



Our single specimen is a fully adult male, and we assume that it is 

 the same as the Cayenne bird, which we have not seen. So far as 

 the evidence of one specimen shows, it is certainly different from 

 the form inhabiting eastern Brazil and Uruguay, which is Myospiza 

 humeralis manimbc (Lichtenstein), type-locality, Bahia. 



Our bird differs conspicuously from M. h. manimbc in having the belly 

 and throat almost pure white, and the pectoral band, sides of the neck, 

 and flanks gray instead of brownish. The black central markings 

 of the feathers of the back are much narrower than in M. h. manimbe, 

 more nearly as in M. h. columbianiis Chapman. 



Still another recognizable form is a bird from Tucuman, Argentine 

 Republic, which we name 



298a. Myospiza humeralis tucumanensis, subsp. nov. 



Type.— M. C. Z. 80,925. Adult d". Tucuman, Argentina, 18 

 December, 1901. 



Characters. — A pale form; the dark central markings of the feathers 

 of the upper parts very narrow, the edges of the feathers very pale and 

 grayish, with very little brown; the whole under parts almost uniform 

 buffy w^hite, entirely lacking the darker pectoral band; sides and 

 flanks but little darker than the belly. 



Measurements. — Type, adult d^ ; wing, 61; tail, 50; tarsus, 20.5. 



299. Emberizoides herbicok.'V sphenurus (Vieillot). 



SLx specimens, both sexes, adult and immature, Vicinity of Para- 

 maribo, March, April, May, and June. 



