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Appendix: A New Agelanius from Colombia 
BY JOSEPH C. BEQUAERT 
Agelanius osornoi, new species 
Female. — Medium-sized, black. Frons of medium width, 
with a large dirty-yellowish basal callus and a velvety-black 
median spot. Dorsum of thorax with grayish-white longitudinal 
stripes, of abdomen with a median row of white triangles and 
lateral transverse white markings. Legs black with mostly pale 
tibiae. Wing with a characteristic pattern of blackish spots. 
Head transverse, about twice as wide as high in front view, 
black, mostly covered with grayish-white pollinosity, which is 
more brownish at level of antennae. Lower half of face, jowls 
and outer orbits with long white hairs, forming a conspicuous 
beard; upper part of face and subcallus with shorter hairs, 
mixed black and white. Frons about two and one-half times as 
long as wide at the subcallus, slightly narrowed toward vertex; 
