THE ECOLOGY AND LIFE-HISTORY OF AMPHIGO-NOPTERUS AURORA AND OF OTHER VIVIPAROUS PERCHES OF CALIFORNIA

PAGE. Introduction I8 I Ecology 183 Breeding season 85 Sex-ratio in adults, young and embryos I86 Early differentiation of the sexes, and natal maturity of the males ...... 187 Copulation, and the storage of spermatozoa 89 Embryonic development and natal metamorphosis I9I Period of breeding of females of different size and age I94 Number of young born by females of different size and age I95 The seasonal marks (annuli) on the scales I97 The metamorphic annulus 200 Comparative size of the sexes at different ages 20I Rate of grow th 203 B ibliography 208