base, sub-falcate. Petals much larger than the sepals, 

 obovate-spathulate, tip apiculate. Lip shorter than the 

 sepals, concave, when spread out oblate, obscurely three- 

 lobed, the midlobe cuspidate ; disk suffused with greeu, 

 and bearing towards its base an elongate grooved callus 



ending in a nob. — J, D. H. 



Fig. 1, section of lip and column; 2, front view of column; 3, anther; 

 4, pollinia : — all enlarged. 



