This is a rare form, originally and beautifully figured by Palisot. It is 

 only known from Africa, and all but one of the specimens are in the museum 

 at Berlin. They were labeled by Dr. Hennings "Polystictus xanthopus form 

 nigripes," and Mr. Herter has endorsed on them the name "Polystictus Mild- 

 brachii." 



Fig. 338. 

 Polystictus Holstii. 



Fig. 339 



Polystictus pseudo-perennis. 



POLYSTICTUS HOLSTII (Fig. 338). Stipe dark or black, 

 central. Pileus with pubescent zones. 



52 



