Description:45 Appendix VI. Predators. PAGE. 45. 45. 47. 47. 47. 48. 48. 50. 52. 55. 55 shades (Plate Ia). (Ogilvie-Grant in Lowe and Kinnear, 1930). immature becoming grey-brown with a pale head or face when adult and at darker and browner with dark heads, and a white face with a well-defined mottled