Mrs. K.M. Way, British Museum (Natural History), London, was so kind as to grant me the loan of a small series of chitons from the Bay of Bengal (Ceylon: Trincomali, and the Andaman Archipelago), which were labelled “Notoplax alisonae” bij the late R. Winckworth. The specimens are indeed conspecific and represent a species recognized as new to science by Mr. Winckworth, who intended to name it after his second wife, Elsie, to whom he was married on April 2nd, 1943. Her full maiden name was Alison Mary Cruickshank. Out of respect for the learned malacologist whose contributions to our present knowledge of recent Mollusca have been very important, I wish to retain the epitheton specificum proposed by Winckworth.