in the Laboratory*

The complete larval development of the hermit crab Diogenes nitidimanus from hatching to first crab stage was obtained by laboratory rearing. Four zoeal and one megalopal stages are described and illustrated. The pleopod buds appeared in the third zoea, the posterior lobe of the scaphognathite appeared in the second zoea, and the antenna in the megalopa showing a remark-able differentiation toward suspension feeding, all unique to D. nitidimanus, are discussed