EXPLANATION OF THE ILLUSTRATION 
Pratre VIII. Srevis pupticirormis C. Schweinfurth. 
1, plant, one half natural size. 2, flower from side, 
three times natural size. 3, flower from front, ex- 
panded, three times natural size. 4, petal, ten 
times natural size. 5, lip from side, ten times natu- 
ral size. 6, lip from front, ten times natural size. 
Drawn by Dororuy H. Marsu 
