Illustrations by
Ryley, Charles Reuben
Charles Reuben Ryley (1752?–1798) was an English painter.
More at Wikipedia
Ring-Tailed Lemur—Sketch for the Museum Leverianum 
Ring-Tailed Lemur 
Lion-Tailed Macaque—Sketch for the Museum Leverianum 
Lion-Tailed Macaque 
Mandrill—Sketch for the Museum Leverianum 
Mandrill 
Virginia Opossum—Sketch for the Museum Leverianum 
Virginia Opossum 
Siberian Musk Deer—Sketch for the Museum Leverianum 
Siberian Musk Deer (Ryley)