Memorandum GALAGO COCOS. 
The description printed of this species was taken from that pub- 
lished by the author (1. c.), as I had not been able to see the type. 
Lately, through the kindness of the Director of the National Museum, 
Dr. Rathbone, the type was forwarded to me, and I found that an 
error had been committed and the chin and throat wrongly described. 
In Mr. Heller’s paper these parts are given as blackish, when it should 
have been stated “chin and throat white,’ the base of the fur being 
plumbeous. 
