EXPLANATION OF THE ILLUSTRATION 
Pirate VI. Sreris previraceMa C. Schweinfurth. 1, 
plant, two thirds natural size. 2, flower from front, 
ten times natural size. 3, petal, sixteen times natu- 
ral size. 4, lip from front, sixteen times natural 
size. 5, lip from side, sixteen times natural size. 
Drawn by Ermer W. Situ 
