PREFACE.

ADDITIONS AND CORRECTIONS TO THE ESSAYS AS ORIGINALLY PUBLISHED.
86	Correction of some names of African Papilios and a reference to Mr. Trimen’s observations.
89	Mr. Jenner Weir’s observation on birds which refused to eat Spilosoma menthrasti .
102	An additional case of snake mimicry in Oxyrhopus trigeminus .
107	Mr. Salvin’s case of mimicry among hawks.
113	Name, Diadema anomala , added.
117 to 122.	Use of gay colours in caterpillars, with an account of Mr. Jenner Weir’s and Mr. Butler’s observations.