https://c8.alamy.com/comp/RDHEFE/text-book-of-embryology-embryology-216-invektebeata-chap-crabs-just-as-clearly-as-the-mysis-larva-represents-a-schizopod-stage-in-the-ancestry-of-macrura-the-megalopa-is-transformed-into-the-adult-by-one-or-two-moults-the-life-history-of-the-anomura-closely-resembles-that-of-the-brachyura-in-their-case-also-the-mysis-stage-is-omitted-but-the-third-appendage-of-the-thorax-the-third-maxillipede-becomes-func-tional-before-the-critical-a-2-moult-which-ends-the-free-z-swimming-life-the-post-larval-stage-of-the-paguridae-or-hermit-crabs-which-corre-sponds-to-the-RDHEFE.jpg