88 Psyche [Sept.-Dee. 
except on the pale areas where some of the hairs are silvery- 
white, particularly on the median triangles. Legs black, grayish 
pollinose, with long, grayish-white hairs except over the dark 
portions of tibiae and on tarsi, where they are black; tibiae of 
normal shape, pale dirty-yellowish over basal two-thirds to 
three-fourths, which bear silvery-white hairs. Wing without 
appendix at fork of third longitudinal vein; all posterior cells 
open at margin ; nearly hyaline with conspicuous blackish spots 
as follows: medium-sized spot at base of first submarginal cell, 
extending over base of first posterior cell, extreme apex of first 
basal cell and slightly into discal cell; spot at lower apex of 
second basal cell, more extended over base of fourth and fifth 
posterior cells and less so into discal cell; fairly large area 
around cross-vein at apex of discal cell, from the first to the 
fourth posterior cells; spot below stigma on second longitudinal 
vein; small cloudy blotches before the tips of all longitudinal 
veins, some weaker than others; stigma blackish; squamae 
clouded; veins black; halteres blackish ; subepaulet bare. 
Length, 11.5 mm.; of wing, 9 mm. 
Colombia: Monserrate near Bogota, Dept. Cundinamarca, 
at about 3,000 m. above sea-level (Hernando Osorno Collec- 
tor) ; holotype at Mus. Comp. Zool. (No. 27634). 
A. osornoi is related to several species of Agelanius from the 
Andes of South America, such as A. excelsus (Surcouf), A. mon- 
tium (Surcouf) and A. columbianus (Enderlein). It is, how- 
ever, readily separated from these and other species known to 
me by the conspicuous pattern of white markings on the ab- 
domen, the arrangement of spots and clouds in the wing, as well 
as the large velvety-pollinose spot on the middle of the frons. 
For this reason I am describing it as new, notwithstanding the 
lack of antennae. 
