Keywords: Handbook to the Primates Plate 11.jpg Plate XI Coquerel's Sifaka Propithecus coquereli 1894 Handbook to the Primates Vol I http //archive org/details/handbooktoprimat01forbiala Henry Ogg Forbes 1851-1932 Species Plates by John Gerrard Keulemans 1842 “1912 PD-old-auto-1923 1912 Handbook to the Primates Propithecus coquereli |