the base narrow and spreading, with two lateral lobes so small 
that they do not include the column, as is usual in this genus ; 
the lip is still more contracted near the middle, whence it ex- 
pands into the broad, kidney-shaped extremity, emarginate at the 
apex: the colour of the whole is pale purple, with darker veins, 
and a yellow line on the disc. Column parallel with the lip, and, 
as it were, applied to it, obovate, dark-purple, expanding into two 
wing-like margins. Azther-case sunk between two teeth or small 
lobes of the clinandrium. Pollen-masses as in the genus. 
Fig. 1. Column. 2. Pollen-masses. 3. Lip :—all more or less magnified. 
