side lobes large, erect, spotted with deep orange ; the disk has 

 three elevated ridges, the terminal lobe is subrotund, waved, ob- 

 tuse, with a cinnabar-orange disk and a white margin, whence, 

 probably, the specific name. Column rather short, the truncated 

 anther-case sunk, as it were, in the clinanthium. Pollen-masses 

 four. 



( Fi<r. 1. Lip and spur. 2. Column, spur, and base (only) of the labellum. 

 >. hront view of the labellum. 4. Pollen-masses : -*« more or less magnified. 



