Description
PLATE XXII .
THE DRILL
Date 1894
Source http://www.flickr.com/photos/biodivlibrary/6029127392
Author Allen's Naturalist's Library.; Henry Ogg Forbes; Richard Bowdler Sharpe
Full title A hand-book to the primates by Henry O. Forbes.
Source: https://commons.wikimedia.org/wiki/File:A_hand-book_to_the_primates_(Plate_XXII)_(6029127392).jpg

The drill (Mandrillus leucophaeus) is a primate of the family Cercopithecidae (Old World monkeys), related to baboons and even more closely to mandrills. Drills are found only in Cross River State in Nigeria, southwestern Cameroon (south to the Sanaga River), and on Bioko Island, part of Equatorial Guinea, in rainforest habitats.