about 8-11 mm. long and 3-4 mm. wide. Petals from a 
short claw rather abruptly ovate-oblong or oblong-oval, 
more or less retuse and often subacute at the broad apex, 
often slightly narrowed or indented on each side, about 
6.38-9 mm. long and 4-6 mm. wide, indistinctly 5-nerved. 
Lip much larger than the other segments, pandurate or 
3-lobed, white to cream-colored with purple spots and a 
yellow callus, about 11-13 mm. in greatest length, about 
8-8.7 mm. wide across the basal portion; lateral (basal) 
lobes semiovate-triangular, broadly rounded at the outer 
angles, with a more or less distinct, semiorbicular lobule 
on each side of the base; anterior lobe reniform-flabellate, 
emarginate at the broadly rounded apex, about 10-11.5 
mm. wide; disc with a prominent callus below consist- 
ing of two series of which the lower one is cuneate at the 
base and composed of several small, fleshy teeth and the 
anterior one of three larger, fleshy teeth; on either side of 
the callus there is sometimes (as in the type) a single 
fleshy tooth. Column small, about 3.5 mm. high, with 
a pair of broad, porrect, subquadrate wings above and a 
fleshy, divaricately bilobed thickening below. 
Oncidium vagans appears to be allied to the Brazilian 
O. Warmingu Reichb.f., but differs in having entire, 
differently shaped lateral lobes of the lip, sessile mid-lobe 
and subquadrate column-wings. 
VENEZUELA: Bolivar, Central Section, Chimanta Massif, 2120 meters 
alt., swampy depression in wet savanna along east branch of head- 
waters of Rio Tirica, February 12, 1955, ‘‘Ivs coriaceous, olive; pseu- 
dobulbs subterete. Peduncle reddish brown; lip white to cream with 
purple spots in center and at apex; callosity yellow with purplish spots ; 
lateral lip appendages white; column purplish above, within whitish 
with greenish yellow at base; sepals and two lateral petals pale yellow 
to cream with broad irregular purple bands, locally frequent around 
hammocks,’’ Julian A. Steyermark & John J. Wurdack 762 (Tyrer in 
Herb. Ames 68534.—Amazonas, Cerro Duida, Rio Cunucunuma 
(Culebra Creek drainage), 1600 meters alt., ‘‘terrestrial; outer peri- 
anth members pale greenish, pale brown mottled ; lip white with mot- 
ea 
