Facts and Arguments for Darwin

This work presents a collection of empirical observations and developmental studies of crustaceans gathered by the author in South America, marshaling anatomical, embryological, and life-history evidence in support of Darwinian evolution. It treats systematic descriptions and comparative morphology (including a survey of Melita), sexual dimorphism, respiratory adaptations of land crabs, cardiac anatomy, and the developmental histories of multiple crustacean groups such as podophthalmous and edriophthalmous forms, entomostracans, cirripedes, and rhizocephalans. It also discusses classification principles, traces evolutionary progress within Crustacea, and proposes pathways by which parasitic rhizocephalans could have arisen from barnacle-like ancestors.