Explanation of PL XIX. 



Nervilia purpureu (HAY ATA). 



Fig. 1. Tin; plant with a leaf. 



"2. A portion of a leaf, showing lamellate hairs. 



;>. The plant with a scape. 



4. Another scape. 



5. A lip. 



(). A column, seen from side. 



7. Apical portion of the same, anther lifted. 



8. A column, seen from back. 



9. An ovary. 



